It has long been no secret that domestic motorists for a long time treated vehicles equipped with automatic gearboxes with caution. However, over time, more fans of such checkpoints appear, and "automatic machines", one way or another, begin to displace "mechanics". Today this is clearly pronounced in Japan, the USA and Canada, where more than 90% of vehicles are equipped with automatic transmissions.

Perhaps the main difference between an automatic transmission and a manual transmission is gear shifting with virtually no interruption in the power flow. That is, when one speed turned off, the other gear turned on at almost the same moment. Strong jerks when shifting gears are almost impossible, which cannot be said about the "mechanics". However, vehicles with automatic transmission have their own operating rules, if not observed, the unit may breakdown.

Comfort is an integral advantage of driving a car with an automatic transmission. The automatic transmission torque converter allows for softer driving conditions and operating conditions not only for the car engine, but also for its chassis as a whole.

If you are the owner of a car with an automatic transmission, you should know what each driving mode, indicated on the gear lever, is intended for. It is necessary to switch the "Parking" (Parking) mode while the vehicle is parked. By turning on this unit mode, a special device is launched in the automatic transmission, which locks the car in such a way that it cannot be moved.

Remember: the only time when you can turn on the parking mode on the lever of the box is a complete stop of the car, otherwise you are guaranteed a breakdown of the checkpoint lock. Many owners are faced with errors that subsequently lead to fatal consequences - they turn on the "Parking" mode at a time when the car is not firmly fixed in place, but can still coast. Accordingly, if you park the car on a slope, then before turning on the "P" mode, you must put the car on the parking brake. This will help extend the life of the transmission lock.

Position "Parking" on the box "automatic"

Correct inclusion:

• press the brake pedal;
• pull up the parking brake;
• release the pedal (the vehicle may move slightly);
• turn on the "Parking" position on the box.

Correct shutdown:

• move the gearshift lever to the driving position;
• by pressing the brake pedal, remove the "handbrake";
• turn off position "P".

Reverse mode - "Reverse"

As the name implies, this transmission mode is designed to drive the vehicle in reverse. Reversing is also allowed after a complete stop of the car in order to increase the service life of the car.

If you turn on the speed with the brake pedal depressed, then, of course, your car will not go immediately. But, as soon as you release the pedal, the vehicle will immediately start moving backward, of course, if it is not standing uphill. This is due to the fact that the engine is constantly pushing the car itself, even if you are not pressing the gas pedal.

Reverse position on the box "automatic"

What you need to know when driving backwards: the box recognizes the driver's commands while moving the foot along the gas pedal. " So if you hit the throttle when driving backward, expect the movement to be sharp.

Remember! Turning on this automatic transmission position while driving forward, you damage the box and other components of the transmission system and engine.

Neutral mode

In this mode, the car will move forward or backward without turning on the motor. Thus, it can be moved, but only over short distances with the engine off. The most common mistake of owners of cars with automatic gearboxes, which is associated with a neutral gear, is its inclusion during a short-term parking (for example, in a traffic jam). Domestic drivers regard the neutral speed at the automatic transmission as identical to the "mechanics" and often practice turning it on when they would have turned it on at the manual transmission.

But this is far from the case. "Automatic" is a more complex and "tricky" unit than "mechanics", and the purpose of the neutral transmission of the box (N) was in the "service" mode. That is, this function of the box is designed to move the vehicle without the participation of the motor. In general, this transmission is not allowed on a permanent basis.

Neutral position on automatic transmission

In order to ensure a longer service life of your gearbox, standing in traffic jams, experts are strongly advised not to engage in neutral gear. If you want your legs to rest a little while driving in a long traffic jam, then turn on the "Parking" mode, of course, if the car will not coast at that moment. However, it is not necessary to switch to neutral as this will only harm the vehicle.

Video from Oleg Konyaev "The structure and operation of an automatic transmission"

This video tutorial describes in detail the device and the principle of operation of the "automatic" box.

Moving forward - "Drive"

The inclusion of this mode ("D" on the lever of the box), as you understand, ensures the movement of the vehicle forward. On most vehicles equipped with an "automatic" gearbox, this speed is protected against unintentional activation. Accordingly, its activation is possible only after the brake pedal or the button is pressed directly on the gearshift lever. Without pressing the brake pedal, attempts to engage this gear will be blocked by the protection mechanism. When this mode is enabled, the transmission automatically shifts gears while driving.

Here the box functions according to the same principle as when the reverse stroke is turned on, that is, the engine itself pushes the car, even when the gas pedal is released. If you need to accelerate sharply, for example, overtaking another vehicle on the road, then do not be afraid to press the gas pedal all the way to the floor.

"Drive" position on automatic transmission

Probably, the main drawback of the traditional "automatic" is a small delay between pressing the gas pedal and the real acceleration of the car (about one second). This is not so noticeable when driving quietly, but can be noticeable when overtaking.

4-3-2-L

When this mode is activated, your automatic transmission will engage certain gears: in position "L" - only the first speed, in mode "2" - only two speeds, and so on. Enabling this mode is important when the vehicle is moving in difficult conditions, for example, on an overpass or on mountain roads.

If you are driving on a slope or uphill for a long time, you can turn on mode "2" or "3" in order to prevent overheating of the brakes. Thus, the car will go no higher than second or third speed. It should also be noted that the inclusion of the first or second gear will be advisable when trying to drive up a steep hill. So your automatic transmission will not switch to an upshift at the most inconvenient moment and will not stall.

Sectional automatic transmission

As the owners of cars with an automatic transmission say themselves, the inclusion of the third gear is advisable when carrying out quick overtaking while driving on the highway. At third speed, overtaking occurs at higher engine speeds and the vehicle develops the highest power, which allows the car to be best accelerated. The average speed limit is about 130 km / h, but it all depends specifically on each car model. Moving in third gear, you need to make sure that the tachometer needle on the instrument panel does not go over the red line.

When driving in second gear, the speed limit is around 70 km / h. According to car owners, it is advisable to include this transmission on rather steep slopes, or on a slippery road. In turn, the activation of the first gear is necessary when driving in rural areas and under other difficult conditions. Here the speed limit is limited to 40 km / h.

Today, in most modern cars, this mode is replaced by the "Tip-Tronick" function - it is designed to manually switch gears to automatic transmissions. But there are also boxes on which, when the "4-3-2-L" is activated, the gearbox automatically switches speeds at increased engine speeds.

Video "Operating modes of an automatic transmission"

This video describes in detail the positions of the speeds on the automatic transmission and other nuances of the automatic transmission.

Was this material useful to you? And what do you know about the automatic box that we did not tell? Share your knowledge with the users of our portal!

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Topic: automatic transmission. Is it possible to turn on P (parking), or can N (neutral) be turned on when parked with a running engine ???

1. A message from Tyler Durden and a girl (or mother-in-law) sits next to her and showing the magazine or shifting the bag neatly pushes the lever into the drive ... and everyone applauds, applauds ... if you put the car in the parking lot and run wherever you want ... And how how far is it on the handbrake to roll away Once again, the question is the difference between P and N modes only in blocking \\ not blocking the shaft with a pin?
2. Message from Jeka1 Once again, the question is the difference between P and N modes only in blocking \\ not blocking the shaft with a pin? http://japancar.pp.ru/info/016.shtml/2
3. Posted by Jeka1 And how far can she roll on the handbrake? and you try it. know the difference)))
4. Message from krandobas http://japancar.pp.ru/info/016.shtml/2 At my work this site is blocked by evil admins. If you can, briefly the essence?
5. can Position "P" - is selected when the car is parked for a long time. In this position of the RVD in the automatic transmission, all controls are turned off, and its output shaft is blocked, so the vehicle cannot move. Engine start is allowed in this mode. Position “R - Reverse. Moving the lever to the "R" position while driving may result in damage to the gearbox and other transmission elements. In this position of the RVD engine start is impossible.

   Position "N" - In the transmission, either all controls are turned off, or only one is turned on. The locking mechanism of the output shaft is turned off, i.e. the car can move freely. Engine start is allowed in this mode.

6. Message from Jeka1 I have this site blocked at work by evil admins. If you can, briefly the essence? What do the range lever position symbols mean and why are they needed? The range selection lever (RVD) of the transmission has several positions, which are designated by letters and numbers. The number of these positions is different for different car models, but on all cars the RVD necessarily has positions designated by the letters "P", "R" and "N". Position "P" - is selected when the car is parked for a long time. In this position of the RVD in the automatic transmission, all controls are turned off, and its output shaft is blocked, so the vehicle cannot move. Engine start is allowed in this mode. Position “R - Reverse. Moving the lever to the "R" position while driving may result in damage to the gearbox and other transmission elements. In this position of the RVD engine start is impossible. Position "N" - In the transmission, either all controls are turned off, or only one is turned on. The locking mechanism of the output shaft is turned off, i.e. the car can move freely. Engine start is allowed in this mode. For vehicles equipped with four-speed gearboxes, the RVD range has, as a rule, four positions for forward travel: "D", "3", "2" and "1" ("L"). It should be noted that if the RVD is installed in one of these positions, the engine cannot be started. Range "D" is the main driving mode. It provides automatic shifting from first to fourth gear. It is recommended to use it in normal driving conditions. Range "3" - movement in the first three gears is allowed. Recommended for use when driving on hilly roads or in conditions of frequent stops. Range "2" - movement is allowed only in the first and second gears. Recommended for use on * winding mountain roads. Shifting to third and fourth gear is prohibited. Range "1" - only the first gear is allowed. This range allows for maximum engine braking. It is recommended when driving on steep descents. On some car models, permission to use the fourth, overdrive gear is carried out using a special button "OD". If it is in the recessed state and the RVD is set to the "D" position, then the upshift is allowed. Otherwise, the inclusion of the fourth overdrive is prohibited. The state of the control system in this case is reflected by the indicator "O / D OFF". In the case of enabling the use of overdrive, the indicator does not light up, and when disabled, it lights up. What are additional buttons (switches) for? What is winter mode? Most modern cars with automatic transmissions have several gearshift control options in the control system. These include - economical, sports, winter, etc. Economical program. The program is set to ensure movement with minimum fuel consumption. In this case, the movement of the car is smooth and calm. Sport program. This program is tuned to maximize the use of engine power. In this case, the car develops, in comparison with the economy program, significantly higher accelerations. To implement an economical or sports program, a special button or switch is located on the dashboard or next to the range selector lever, which, depending on the car brand, may have the designation "POWER", "S", "SPORT", "AUTO", "A / T MODE ", etc. The electronic control units of almost all modern vehicles have a special starting program on slippery roads (winter program). To activate it, there is also a special button or switch, which may have the designations "WINTER", "W", "HOLD", "*", etc. In the case of its action, various algorithms for the automatic transmission are possible, but, as a rule, in all cases, starting is carried out either from the second or from the third gear. What is overdrive? Which of the modes is preferable in urban conditions - drive or overdrive? Overdrive in the terminology of American automakers means overdrive. It is usually designated as “OD”, or D, or D in a circle. An overdrive is recommended for measured, economical driving on the highway. Can I shift the range lever on the fly? It is possible, but not in all positions. It is strictly forbidden to move the RVD to the "P" and "R" positions when moving forward. In both of these positions, the lever can only be moved when the vehicle is at a complete stop. Violation of this rule can lead to serious damage to the automatic transmission. In addition, it is not recommended to move the RVD to the "N" position while driving, since in this case the connection of the wheels with the engine is lost and sudden braking can cause the car to skid. And in all other provisions of the RVD, you can safely translate. In some cases, it is even recommended to do this on purpose. So the transfer of the RVD from position "3" to position "2" will increase the efficiency of engine braking, etc. Should the range lever be set to “N” when stopping at a traffic light? It makes sense only during long stops in traffic jams in hot weather, to reduce heat generation and prevent overheating of the oil in the box. In other cases, this is not even recommended. Do I need to use the parking brake when parking when the range lever is in the “P” position? To securely fix the car in the parking lot on relatively flat areas, a working mechanism for blocking the automatic transmission output shaft is quite enough. But if the car is standing on a slope, then the hand brake is required. Moreover, it is necessary to first tighten the handbrake and only after that set the RVD to the “P” position. In this case, you release the automatic transmission output shaft locking mechanism from the additional load associated with the car's desire to roll down. How to determine the number of gears in an automatic transmission? In Japanese cars, a four-speed automatic transmission can be identified by an additional button on the RVD, which is labeled “OD OFF” or “Hold”. If there is no such button, then, most likely, the automatic transmission is three-speed without an overdrive. In European vehicles, the range selector for three-speed automatic transmissions is marked with PRND21. Four-speed - PRND3. Five-speed - PRND4 ... In American cars, the presence of a fourth (sometimes fifth) overdrive is indicated by the symbol D in a circle. With some experience, it is possible to determine the number of gears in practice by watching the tachometer needle while accelerating the car. Each shift will be accompanied by some reduction in engine speed. Only in this case, it must be borne in mind that the tachometer needle reacts in the same way to the lock of the torque converter (however, the drop in revolutions in this case will not be as noticeable as during gear shifting). Can I skid on a car with automatic transmission? Nothing criminal happens while slipping in the automatic transmission. In this case, increased heat generation in the torque converter can be critical if the cooling system has low efficiency (the automatic transmission cooling radiator is clogged with wear products). How to tow a car with automatic transmission? There is no single answer to this question either. Some vehicles have very strict passport restrictions. For example, Jeep Grand Cherokee is recommended to be transported only on a tow truck. Slightly simpler with front-wheel drive Chrysler. Cars with a three-speed automatic transmission can be towed at a speed of 40 km / h for a distance of 25 km, and with a four-speed automatic transmission at a speed of 72 km / h for a distance of up to 160 km. And yet, whatever the car may be, in the event of a faulty transmission, a tow truck is preferable. The fact is that in the automatic transmission, lubrication is carried out forcibly, i.e. oil is supplied to each friction pair under pressure. If the transmission is defective, then there is no certainty about the presence of lubricant. True, the performance of the pump can be indirectly assessed. It is necessary to compare the oil level with the muffled and running engine. If the level doesn't change, don't even think about towing. Carry out towing with the engine running and the high pressure hose set to the “N” position. There is another way to tow a car with a failed automatic transmission. Pour oil into the automatic transmission as much as possible, which will provide at least some lubrication for all its parts. Is it allowed to tow a trailer with a car equipped with automatic transmission? Allowed. But we must remember that the higher the load, the more heat is generated in the hydrotransformer. If you constantly use a trailer, consider installing an additional radiator in the automatic transmission cooling system. In addition, in the case of long-term towing of a trailer, the use of an overdrive is undesirable. Better to do this on the "3" or "2" bands. Do I need to warm up the automatic transmission before driving? The first time after starting the movement, it is recommended to avoid dynamic driving until the oil in all units has warmed up to operating temperature. In the cold season, before the start of the movement, it will not hurt to warm up the oil in the automatic transmission a little. To do this, it is necessary to move the RVD to all positions, lingering in each of them for a few seconds. Then turn on one of the ranges of motion, and hold the car with the brake for a few minutes, while the engine should run at idle speed. What are the main advantages and disadvantages of automatic transmission? The automatic transmission enhances driving comfort. The absence of the need to select the desired gear and shift gears, allows you to focus on driving, which in a difficult road situation will not interfere even with an experienced driver. Thanks to the presence of a torque converter, the automatic transmission creates more favorable operating conditions for both the engine and the chassis, which increases their resource, and the automatic transmission control system prevents the occurrence of engine and chassis overloads due to driver errors. A car with an automatic transmission is equipped with a passive safety system, which does not allow starting the engine in the positions of the RVD other than “P” and “N”. And also prevents the spontaneous movement of the car when parked on an uneven ground, because the key can be removed from the ignition lock only in the RVD position “P”. The disadvantages of automatic transmission include lower efficiency (due to losses in the torque converter) than that of a manual transmission, which increases fuel consumption. Although this is not always the case. Modern automatic transmissions in some driving modes can achieve higher efficiency compared to manual transmissions due to maintaining optimal engine speed and "intelligent" control of the torque converter lockup. Another drawback is the slightly worse dynamic performance of a car with an automatic transmission than with a manual transmission, all other things being equal. The difference is not so great and insignificant for the majority of drivers. And finally, a car with automatic transmission cannot be started except with the help of a starter. It should be noted that the overwhelming number of drivers with experience in operating both types of transmissions, regardless of the level of income and driving experience, give unconditional preference to cars with automatic transmission. What is kickdown? If, while driving, press the throttle control pedal all the way, then the gearbox will shift one or two gears down. This mode is recommended for obtaining higher acceleration values, which is useful, for example, when overtaking. In this case, reverse upshift can only occur when the engine reaches maximum speed. If you release the throttle pedal, the transmission will return to normal operation. It should be borne in mind that on a slippery road during a forced downshift, the drive wheels may begin to slip, which can lead to a skid. What does the automatic transmission cooling system look like? As already noted, the main source of heat generation in an automatic transmission is the torque converter. Moreover, at high loads, the heat release is quite large. The operating temperature of the transmission is comparable to or higher than the engine temperature. Therefore, cars with automatic transmission have a special cooling system, the radiator of which is either built into the radiator of the engine cooling system, or is installed separately and is cooled by an air flow. On old cars with a small engine volume, boxes with an air cooling system can be found. There are additional external blades on the converter housing, with the help of which they organize the air flow to remove heat. How to properly start driving a car with automatic transmission? Before starting the movement, you should always press the brake pedal, move the RVD to the desired position, without pressing the throttle control pedal. After a light push, you can release the brake pedal and start driving by acting on the throttle control pedal. What are the available methods for checking the status of the automatic transmission? What is “Stall-Test”? First, checking the level and quality of the oil in the automatic transmission. Secondly, the time of switching on the gear when moving the RVD from “N” to “D” or “R” should not significantly exceed 1 - 1.5 sec. The inclusion of the transmission can be judged by the characteristic jolt. Pay attention to the quality of the shifting during running-in. When changing gears, there should be no "shock", vibration and extraneous noise. The moment of gear shifting should not be accompanied by an increase in engine speed. An experienced driver on the behavior of the car on the road can make a qualified preliminary conclusion about the state of the automatic transmission. Another simple method for checking the status of an automatic transmission is Stall-Test. The essence of this test is to determine the engine speed when the vehicle is fully braked and the throttle pedal is pressed all the way down. By the value of these revolutions, one can judge the serviceability of some elements of the automatic transmission. Let's make a reservation right away that the Stall-Test must be performed by experienced mechanics. Otherwise, you yourself can disable the automatic transmission. In addition, to analyze the performance of the automatic transmission, it is necessary to know the nominal value of the engine speed during the Stall-Test, without which this test will not give you anything. Is it possible to do without automatic transmission repair if the car sometimes does not drive? Owners of cars with "electronic" automatic transmissions, in the absence of movement, hope that all the problems are in the failed sensors, after which everything will be fine. There may be problems with the sensors, but as the saying goes: "It's too late to drink Borjomi ...". The fact is that control algorithms do not provide for blocking movement in case of any failures in the system. Even if all wires and sensors are cut off from a working automatic transmission, the car will not lose the ability to move. There will be no good dynamics and gear changes, but you can go. The lack of movement forward or backward, even periodically, indicates serious problems already in the mechanical part of the automatic transmission, and there is only one way out - repair. Sometimes you can hear the statement that the cause of all troubles can be a clogged oil filter in the automatic transmission. Like, replace the filter, change the oil twice - and all problems will disappear. It doesn't work that way. The process of destruction of friction elements is irreversible. Burnt out clutches are treated only by replacing them, new oil is not able to restore them. What is the difference between "hydraulic" and "electronic" automatic transmissions? The automatic transmissions themselves are the same both in the first case and in the second. The main difference concerns the control system. The control system can be conditionally divided into three parts: generating signals of the state of the automatic transmission and its controls; analyzing and executive. In the case of a "hydraulic" automatic transmission, the operability of all these three parts is ensured by the hydraulics by the formation of appropriate pressures. In the case of an electronic automatic transmission, all signals (input and output) are formed electrically, and only at the end of the chain of control signals is hydraulics used. In addition, an electronic control unit (computer) is used to analyze the incoming information and make a decision. This makes it possible to make the automatic transmission control system more flexible, providing automatic transmission operating modes inaccessible to the hydraulic control system. What are codes? Why is the “OD OFF”, “Hold”, “S” or “Check AT” light flashing? Why are there no gear changes? Here we will focus on automatic transmissions with an electronic control system. The operation of the "electronic" automatic transmission is controlled by the on-board transmission computer, which can be made either as a separate device or be combined with the engine control unit. The transmission computer receives signals from various sensors (speed, throttle opening angle, high pressure hose position, automatic transmission oil temperature, etc.) located both in the automatic transmission and outside it. It processes this information and, based on its analysis, generates commands (output signals) to the actuators in the automatic transmission (solenoids). Thus, the operation of the automatic transmission is controlled. The computer also performs another function - monitoring and troubleshooting. For all input signals there are acceptable limits for their change. If any signal is out of range, then the computer writes into the memory a sequence of digits - a code (Diagnostic Trouble Code - DTC) corresponding to this malfunction. In addition, the computer controls the resistances of the output circuits (or the currents flowing through them, which is the same). For them, there are also permissible limits, upon going beyond which the corresponding fault code is written into the memory. In addition, the computer can compare the readings of the speed sensors of the input and output shafts of the automatic transmission, thereby controlling the gear ratio of the automatic transmission. Deviations of the calculated gear ratio from the specified one is a sign of slippage in the automatic transmission friction control elements, which is also recorded by the corresponding codes in the memory of the transmission computer. Unfortunately, the gear ratio control function is not implemented in all car models. To read the codes in the computer memory, you need special diagnostic equipment - a scanner. The scanner allows not only reading the codes, but also erasing them, and also with its help you can determine the readings of various sensors of the automatic transmission control system. The procedure for reading and determining faults by codes is often called computer diagnostics. What happens after a fault code appears in the transmission computer memory? This is determined by the algorithm of the program according to which the computer operates. The response of the control system is ambiguous. When some codes appear, no tangible changes in the operation of the transmission will occur, while other codes can cause the lack of gear changes. It all depends on which loop of the control system failed. Some codes are for informational purposes (for example, the code “the battery was disconnected”), while others lead to a change in the operation algorithm of the automatic transmission control system (for example, the code “open circuit in the solenoid circuit”). In case of serious problems, the control system goes into automatic transmission protection mode. This emergency mode has different names: Limp In, Limp Home, Safe Mode, etc. The algorithms for the control system in emergency mode are largely determined by the automatic transmission model. In some cases, the control system ceases to monitor the quality of switching, and they occur with "bumps". In other cases, the box engages in second or third gear, and all gear changes are prohibited. In some cars, emergency mode is accompanied by flashing or constant indication on the instrument panel of one of the signals associated with the operation of the automatic transmission: “Hold”, “S”, “Check AT”, “OD OFF”, etc. In the case of a combined engine-transmission computer, this signal can be “Check Engine” or an engine outline symbol. If none of these signals on the panel are lit, then this does not mean that there are no fault codes in the computer's memory, but if there is a signal, then there are codes in the computer's memory. Emergency mode does not imply the operation of the car, it only serves to get to the service and eliminate the malfunction. If this is not done, then it may turn out that due to a minor malfunction that has not been eliminated in time, the entire automatic transmission comes out. It should be borne in mind that the "electronic" box is, in fact, an executive device. Problems with gear shifting, poor dynamics, jerks, "bumps" can be caused by a malfunction of the transmission itself, or problems with wiring and sensors, as well as a faulty transmission computer. Problems in on-board electronics lead to the failure of the box itself, after the repair of which the situation will most likely repeat itself. And so on until the cause of the malfunction of the electronic part of the control system, which is not always located in the automatic transmission itself, is eliminated. As a rule, cars arriving for repair have not one, but a whole set of faults. Qualified diagnostics will help to understand this tangle of problems. But one should not expect miracles from the diagnosis, although sometimes it is possible to quickly eliminate the problem and the box "comes to life" before our very eyes. Diagnostic capabilities have objective limitations. Computer diagnostics are far from being equivalent for different types of automatic transmissions. Its capabilities can be assessed by looking at the complete list of codes for this automatic transmission model. For some models, the list of all possible codes (and therefore of controlled parameters) consists of four items, while others have fifty. What are adaptive automatic transmissions? Again, this term refers more to the control system, and not to the automatic transmission itself. The development of "electronic" automatic transmissions led to the emergence of adaptive transmissions. The developed control algorithms are becoming more and more intelligent, which leads to the appearance of a new quality in the same, from a mechanical point of view, transmissions. The on-board computer monitors the driver's manner of driving, adjusting accordingly. In addition, the algorithm for the operation of such a computer is based on the account of wear in the automatic transmission of frictional controls. All this leads not only to an increase in the comfort of travel by car, but also to an increase in its resource and efficiency. What is Autostick (Steptronic, Tiptronic)? This is a control system for the operation of an automatic transmission, in which, along with an automatic one, a semi-automatic control mode is also provided, in which the driver gives the command to change gear, and the quality of these changes is provided by the control system. Depending on the manufacturer, this mode has different names (Autostick, Steptronic, Tiptronic), it is implemented only on cars with an electronic automatic transmission control system, and even then not on all. In cars equipped with such a system, the RVD has a special position in which the Autostick mode is activated. Regarding this position, there are two opposite, not fixed positions of the RVD. These positions are labeled “+” (“Up”) and “-” (“Dn”), respectively, for upshifting or downshifting.

   The Autostick mode is semi-automatic rather than manual because the transmission computer does not cease to control the driver's actions and will not allow him, for example, to move away from a top gear, or select a gear in such a way that the engine speed exceeds the permissible ones. Otherwise, it is a complete illusion of a manual transmission. At the request of the driver, you can switch to the usual automatic control mode by moving the RVD to position “D”.

   I arrange this in passing.

7. Message from Jeka1 To prevent: Stopped, hold the brake, stuck N in, tightened the handbrake, released the brake (the car locked on the handbrake), turned on P. There will be nothing to eat. Again, dark:

   The whole difference between P and N is reduced only to the fact that in P the shaft is additionally blocked by a pin?

   About that and the whole bazaar! No difference! Only closer to neutral.

8. In short, a short conclusion is possible. The only difference is the pin blocking of the shaft. Thanks to all.

   Admin-you can close the topic. Or not, maybe people will still want to talk about this or a similar topic.

9. Message from Jeka1 It is winter now and often there is a need to leave the car with the engine running (so that the interior does not cool down) I understand that you can leave the car closed for a couple of minutes only with a button, that is, in a premium?
10. Message from Honorary Odintsovo As I understand it, you can leave the car closed for a couple of minutes only with a button, that is, in a premium? started the car got out of the car left if you want, you can take and close the car with a signaling

kiario4.ru

Unlocking the automatic transmission, removing from the parking lot

You get into the car, start the engine, and with the usual movement prepare to switch the automatic transmission from position P (parking) to D (drive) - but the lever refuses to be moved.

Quite often, the question of how to unlock the automatic transmission also arises in another version - the engine does not start, the car must be rolled or towed or loaded onto a tow truck, and the wheels are blocked.

You can of course call a tow truck with a loader crane to transport your car to a service station, but this is not always possible, especially if your car is in a garage or parking lot.

What to do in such cases to unlock the automatic gearbox selector lock?

Do not try to make more effort, or resort to the help of volunteers - look for a hidden automatic transmission unlock button, on many cars, especially Japanese brands, it is located near the shift selector. If found - great, press and remove the automatic transmission from the parking lot. No - call our roadside assistance dispatcher and he will advise you.

If you cannot unlock the automatic transmission yourself, the Uncle Charlie technical assistance specialists will come to you and help you remove the automatic transmission of your car from the parking lot. We know how to remove from the parking lot BMW, Mercedes, Volkswagen (including Tuareg), Range Rover, and other brands.

How to remove the automatic transmission from the parking lot?

Below we have provided advice from our auto mechanics and even a small video on removing automatic transmissions from the parking lot of various cars. In most cases, the general algorithm for self-unlocking the automatic transmission selector is as follows - you need to disassemble the console around the automatic transmission selector and find a safety lever that blocks the automatic transmission from the parking lot (P - parking) to any other position.

1. Let's take a closer look at how to do this using the example of the Skoda Octavia, emergency removal from the parking lot:
2. Open the storage compartment in the center console or the front ashtray.
3. Pull the trim upwards on the left and right sides.
4. Lift up the cladding at the back.
5. Press the yellow plastic catch with your finger and at the same time move the automatic transmission selector lever to the N (neutral) position. (see illustration)

If the diagram and illustrations did not help, watch the video - the process of removing the Mercedes W211 from the parking lot is shown, the general algorithm remains unchanged.

All! The car is rolling and ready to be transported or loaded onto a tow truck. Attention! When towing with another vehicle, be sure to read the conditions for towing a vehicle with automatic transmission in the manufacturer's instructions.

Instructions for self-unlocking of automatic transmissions of cars of various brands:

• Land Rover Discovery 3
• Dend Rover Freelander 2

If you did not manage to remove the box from the parking by yourself, call our technical assistance service "Uncle Charlie" - we will tell you, we will come, we will help!

Automatic transmission parking

Automatic transmission parking mode. The principle of operation, as it is arranged in the "machine". Breaking myths

There are plenty of myths associated with the "parking" mode, almost all of them are associated with parking! Someone thinks - that in no case should you leave your car in the parking lot, but you must put it in "neutral" and "handbrake". Others say that it is just super convenient and always use it, while others say that when "parking" the brake pads are locked in front or behind, so the car is fixed! And where is the truth, how the car works, translated into this position, let's figure it out ...

To begin with, I want to say right away to those who assure us that you cannot put on this mode in the parking lot! Guys, that's not true. The word "Parking" is originally English, if translated, it means - "parking". Thus, manufacturers hint that when you stop, you need to turn on this particular mode. It's kind of putting the car in gear when compared to mechanics.

So pads or not?

I will immediately answer the second myth - namely, that the car blocks the front or rear brake pads. This is also not the case, the braking system of your car does not participate in the "parking", it has nothing to do with blocking the machine. Although it seems to be logical.

This is also not done for the reason that in the winter period of time the pads can simply freeze to the surface of the disc, so they looked for another solution precisely at the level of the transmission and, you know, they found it.

How does the blocking work?

Now I will remember a little mechanical transmission. So, in "mechanics" there is a wonderful opportunity to put the "car in gear", that is, you do not use the parking brake, do not use other locking methods, but simply leave it - say, at "first speed" and the car does not roll anywhere.

But why? Because - the mechanics is a "rigid engagement", that is, the gears of the "box" are rigidly connected to the clutch disc - the flywheel and then the engine. While the power unit is not working, there will be no movement! Of course, you can open this circuit and if the car is standing downhill it will roll, just put it on "neutral". Thus, you cut off the transmission, from the motor, and it can "rotate the shafts" without it!

However, in an automatic machine, everything is different, as we know, there is no clutch in the understanding of mechanics, here the torque is transmitted using a torque converter, but it does not have a rigid engagement (read here). Therefore, it is impossible to leave the automatic transmission in the transfer, it simply will not work!

But they say that "parking" is just transmission blocking, but how does it happen?

More about "parking"

The mode itself really blocks the transmission, only here it is done differently. In order for the car to lock, it is necessary to “hard” stop one of the shafts of the automatic transmission, and that's how they do it - the shaft lock is banally turned on.

Physically, this is implemented as follows - a special lock washer is put on the working gear of the automatic transmission, from one end it is put on a special lock washer (it sits rigidly on the gear), it is made by protrusions or "teeth", when "parking" a special lever enters it, which stops these teeth - blocking the gear ...

When the car is put into this mode, a characteristic click is heard, it goes into the "lock washer" lever. It is driven by traction.

With this blocking, the car will not go anywhere, the front wheels will not be able to rotate, because the transmission associated with them is blocked.

After "parking" when starting the car, you must move the lever to the "D - DRIVE" position, the lever leaves the locked gear, and it can rotate freely again. As you can see, the design is quite light and simple.

Auto start

In general, the "parking" mode is difficult to overestimate. In fact, a simple blocking, but how much benefit - you cannot start the car if you have it in other modes! I think this is correct, because on "DRIVE", the car will simply roll forward, thereby creating an emergency situation.

About the button on the lever, on some cars there is a button without it, you cannot turn on, you cannot turn off the modes, but often this is done at the level of the lever, and not at the level of the transmission. It serves so as not to accidentally switch the lever to an unnecessary mode.

If the car is parked and you are towing it

This happens due to inexperience, many can start towing not in a neutral position, but in a “parking lot”. The car will roll with "force", but clicks will be heard!

• Nothing bad will happen, clicks mean that the lever will jump from "tooth to tooth", but the structure will not be damaged, it will be detailed below in the video
• However, I still strongly advise you not to tow a car in this mode, it is still not entirely correct! You need to put a neutral gear, or call a tow truck.

TOTAL. "PARKING" - does not block the brake pads, it is NECESSARY to put it, because you will not start your car! Occasionally, you also need to press the brake pedal (not all manufacturers, but this is).

Now a very useful video, it tells how everything is arranged from the inside, be sure to watch.

That's all, sincerely your AUTOBLOGGER.

avto-blogger.ru

Automatic transmission: parking, handbrake, kickdown, overdrive

Modern cars are easy to drive thanks to an automatic gearbox. So what is it about this automatic transmission, consider the device, the principle of operation and a common problem for a beginner - it is not possible to leverage from the parking lot.

1. Automatic transmission: device.
2. OverDrive mode.
3. KickDown mode.
4. Why is it not removed from the parking in the automatic transmission?
5. What can not be done with the automatic transmission?
6. Using the handbrake with an automatic transmission.
7. Video about the automatic box.

What is a parking in a box machine?

Like a manual transmission, the machine does the same job, only on its own. At the foot of the gearshift knob on the automatic gearbox there are the following designations:

1. P - This is parking and starting the engine. Parking is called. It is used to immobilize the car after the car has stopped and was set on the hand brake.
2. D - This is forward movement.
3. R - This is reverse. Reverse, that is, movement in the opposite direction. It can only be activated when the brake pedal has been fully depressed and the vehicle has stopped.
4. N - This is the neutral position. In neutral, the engine does not transmit rotation to the automatic transmission. Used for long stops or to warm up a car.
5. L - This is a low gear. It is used for slow movement, for example, when you have left the road, and there you cannot go fast. In fact, this is an analogue of the 1st speed of a mechanical box.

Automatic transmission: device

This device is a type of transmission that automatically selects the right gear ratio suitable for the speed of movement.

1. Hydraulic transformer housing.
2. Driven wheel (turbine).
3. Reactor wheel.
4. Drive wheel (pump).
5. Oil pump.
6. Excitation windings of the electric motor.
7. Torque converter lock-up clutch (clutch).
8. Damper.
9. Torque converter housing.
10. Transmission housing.
11. Locking clutch friction discs.
12. Locking clutch housing.
13. Planetary reductor.
14. Flange of the driven shaft of the gearbox.
15. Oil pan.
16. Hydraulic shift control valves.
17. Valve box.

How to use an automatic transmission correctly?

As with any automatic system, automatic transmission requires careful handling. The correct operation of the automatic box consists in the following actions:

1. Start the engine, warm it up, especially if it's frosty outside, as the oil in the engine and in the automatic transmission thickens, which leads to strong friction of the mating parts. Find out how to change the oil in an automatic transmission.
2. Depress the brake pedal as far as it will go and set the gearbox lever to position D (drive).
3. Remove the car from the hand brake and smoothly release the brake lever. Then the car will start moving slowly.
4. We press on the gas pedal and as the speed set for each gear increases, the machine itself will start to change gears. Switching the machine is accompanied by small jolts.
5. With a decrease in speed, such a gearbox begins to downshift itself.

Some automatic transmissions have W modes or Snow. This means that with W mode, that is, the box is set to winter mode. In winter mode, the machine does not use the first gear, the car starts off with 2nd or 3rd gear. This causes the car to slip less and reduce gears just to avoid skidding at low speeds.

Important! To prevent the automatic transmission from breaking, one very important rule must be observed: do not move the selector (lever) when the car is moving from position D to R or P. This rule should not be forgotten if the car is lifted by a jack or a lift and D mode is turned on to check the brakes at the stand ...

It is possible to translate the automatic transmission selector only after the car has completely stopped and the brake pedal is fully depressed.

It is forbidden to switch to the N-neutral position when the car is driving, so as not to create an emergency situation on the road, especially if there is ice. It is necessary to put on "neutral" at long stops so that the automatic transmission cools down.

OverDrive Mode

Overdrive mode is an overdrive gear, when turned on, the motor and automatic transmission are rigidly coupled by blocking the hydraulic transformer.

Overdrive is used when you need to drive at the same speed in fourth gear for a long time. When this mode is turned on, the driver feels a slight jolt, as if it has shifted to 5th gear, but, in fact, it is the hydraulic transformer blocked.

OverDrive is activated by a button on the shift lever. And it also turns off by pressing the button a second time. Also, the implementation of disabling this mode can be done by pressing the gas pedal all the way.

KickDown mode

If on a car with automatic transmission you press the gas pedal sharply to the floor, the KICKDOWN mode is activated. On the machine, this mode is used for sharp acceleration, which is very convenient when overtaking or getting ahead of other vehicles.

In KIK DOWN mode, the box will only switch when the engine speed is at its maximum.

If you need to turn off the acceleration on the machine, then just take your foot off the gas pedal or release the pressure on it.

Why is it not removed from the parking in the automatic transmission

The first step is to check if the brake lights (brake lights) at the rear are on. If they do not light up, check the STOP fuse. A fuse is the most common cause of equipment failure, so you need to check it from it, and this is the easiest repair. The STOP fuse is located in the passenger compartment or under the hood fuse box.

If the fuse is working, there are no burnouts, then the next step is to check the brake signal switch. The contacts are often oxidized and are the cause of the circuit breakdown, due to which the brake lights do not light.

If the brake light switch is fully functional, then you need to check the automatic transmission control cable. It so happens that the labels get confused and need to be re-configured.

If the cable is serviceable, then check the selector switch (lever) sensor. If there are problems, it must be replaced.

If the sensor is normal, then we check the automatic transmission itself. Diagnostics of an automatic box is checked with a special scanner, when connected, an error code appears on the screen of a connected laptop or phone, which must be deciphered.

The automatic transmission test before 1998 with an OBD-1 or OBD-2 scanner is carried out in the following order:

1. Warm up the engine, drive at a speed above 20 km / h.
2. Stay. Stop the engine. We leave the ignition key in the lock.
3. Turn on the ignition, but do not start the starter.
4. Switch off ignition.
5. Put the selector in position D using the emergency button. Also include hold. In this case, Power does not need to be touched.
6. Switch on the ignition.
7. Set the selector to position 3 and turn off hold.
8. We put the selector in position 2 and turn on hold.
9. Set the selector to 1 position and turn off hold.
10. Press the gas pedal 2/3, that is, more than half. Wait 4 seconds.
11. Watching the Power indicator. When blinking in slow motion, you have to read the errors. If Power blinks frequently, then there are no errors.

Automatic transmission text with a production year later than 1998:

1. Switch on the ignition.
2. Switch off ignition.
3. Switch on the ignition.
4. Put the gear knob in position 1.
5. Switch off ignition.
6. Switch on the ignition.
7. Lever to position 2.
8. Knob to position 1.
9. Knob to position 2.
10. Knob to position 3.
11. Knob to D.

We look at the indicators.

Here are examples of errors:

11 open circuit, short circuit or seized solenoid valve a12 open circuit, short circuit or seized solenoid valve b13 open circuit, short circuit or seized switching solenoid valve 314 open circuit, short circuit or seized switching solenoid valve 215 open circuit, short short circuit in the circuit or sticking of the switching solenoid valve 121 open, short circuit in the temperature sensor circuit atf22 open circuit, short circuit in the air mass meter circuit 23 open circuit, short circuit in the engine speed sensor circuit 24 open circuit, short circuit in the circuit or seized solenoid valve c25 open, short short circuit in the torque control signal circuit 31 open, short circuit in the throttle position sensor 32 open, short circuit in the vehicle speed sensor 1 circuit 33 open, short circuit in the vehicle speed sensor 2 circuit

75 Automatic transmission Incorrect switching sequence. Automatic transmission diagnostics required.79 Automatic transmission Overheating of automatic transmission, automatic transmission diagnostics required.81 Automatic transmission Incorrect voltage in the circuit of the switching solenoid 2-3; automatic transmission diagnostics required.82 Automatic transmission Incorrect voltage in the circuit of the switching solenoid 1-2; automatic transmission diagnostics required.83 automatic transmission TCC solenoid circuit - high voltage on the solenoid upon activation; automatic transmission diagnostics required.84 automatic transmission Incorrect voltage in the circuit of the switching solenoid 3-2; automatic transmission diagnostics required.85 automatic transmission TCC solenoid jammed - automatic transmission diagnostics required.90 automatic transmission Incorrect voltage in the TCC solenoid circuit; automatic transmission diagnostics is required.

What not to do with automatic transmission

The device and the principle of operation of the automatic box assumes the following types of prohibited actions:

1. Always warm up the car before driving. When working on a cold automatic transmission, the resource decreases, especially in severe frost, when the transmission oil thickens. To choose the right transmission oil, a 75w90 oil rating was compiled. You can move the selector to different positions with the brake pedal depressed. If you need to go urgently, then the sparing mode of the automatic transmission in this case will be a smooth start-off and movement without jerks.
2. Automatic transmission is a "soft" technical device that does not like crazy loads and jerks, which are done by drifting enthusiasts. Switch to low mode L when off-road.
3. If a car with an automatic gearbox does not start, then you should not try to start it by towing. You can tow it, but at a speed of no more than 40 km / h and at a distance of no more than 30 km. This is because the oil pump only runs when the engine is running. And when towing, rotation is transmitted from the wheels and further through the box, therefore, without oil supply, wear will be faster. It is better to use a tow truck if possible.
4. If the car is with four-wheel drive and with an automatic transmission, then such vehicles in case of breakdown can be transported only on a tow truck or, if in tow, then with the cardan removed.

Using the hand brake with an automatic transmission

Both cars with mechanics and cars with a machine must be equipped with a hand brake. It often breaks down on the mechanics and drivers do not bother to repair the handbrake. But, if the automatic transmission, and not the manual transmission, then the handbrake must be repaired in the event of a breakdown.

In the operating instructions for a car with a machine, it is recommended, after stopping the car, to set the selector to the P (parking) position immediately before or after turning on the hand brake. But, many drivers do not put on the handbrake, they only leave the parking lot. But, it is better to install a handbrake, especially on a slope. Extra security doesn't hurt.

With the engine running with the selector in neutral position, it will not be possible to switch the lever to the parking lot, since the hand brake is not applied. This is good safety for the forgetful or careless driver.

Useful videos about operating an automatic transmission

There are automatic transmissions with tiptronic, that is, it is possible to transfer control to manual mode + and -.

autostuk.ru

Automatic transmission parking mode. The principle of operation, as it is arranged in the "machine"

Cars with automatic transmission, undoubtedly, require more careful operation than "mechanics", and a special driving style. Of course, if you are going to be trained in driving on an automatic transmission or an auto instructor will work with you on an automatic transmission, then you will know many "subtleties" necessary in handling a car. But some you can learn on your own, for example, how to park correctly in a car with an automatic transmission.

In cars with automatic equipment, everything seems to be clear, for parking there is a special position of the lever in the box with the letter P. However, this position requires certain preparatory actions at almost any stop.

Never move to the “parking” position while driving, even when driving slowly. For a car, this means a sharp blockage of movement mechanisms, which means that you can burn something, break something, and indeed get into an accident if it happened on the road.

First of all, such a car does not really tolerate prolonged overloads, which means that it is strictly forbidden to park on a car with automatic transmission on any slope or descent. If parking is nevertheless necessary, then it is performed according to the following scheme: "press the brake - put the gearshift lever in neutral position - release the brake - put the car on the handbrake - press the brake again and move the lever to P". In this case, the load on the vehicle systems is practically eliminated. However, this option is not suitable for long-term parking in the cold season, when the handbrake is on, the brake pads can freeze, and in the morning you simply will not move.

When you are about to start, and the parking lot is on a slope, then when you start moving, you will certainly hear a metallic unpleasant sound. To avoid the load on the parking system of a car with an automatic transmission, first of all, you must first squeeze the brake and remove from the parking brake, and only then remove the lever from the “parking” position. In addition, position "P" should not be used for short-term stops or stops for a short time, at a traffic light, for example, it is enough to hold the brake pedal and gear lever in position "D".

In general, otherwise, cars with an automatic transmission are parked in the same way as everyone else. Keep your distance; calculate the opening angle of the doors not only for your own, but also for your neighbor in the parking lot; do not disturb other motorists - and your parking will be perfect for everyone.

Svetlana

Transmission: automatic transmission

Car: Kia Spectra automatic transmission, training on your car is possible

Driving experience: 18 years

Study area: Eastern Administrative District, South-Eastern Administrative District, Ryazansky Avenue, Volgogradsky Avenue, Oktyabrsky Avenue, Verkhniye Polya Street, Lyubertsy, Kotelniki, Reutov, Zheleznodorozhny

Lesson hour: automatic transmission - 750 rubles

Teaching methods: I will help you master and hone your driving skills on the site, in a dense city stream, I will teach you how to cope with difficult situations on the road, I will help you thoroughly prepare for passing exams in the traffic police More details

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Natalia

Transmission: APP

Car: Kia Spectra automatic transmission

Driving experience: 17 years

Study area: SZAO, ZAO, Khimki, Kurkino, Mitino, Krasnogorsk, Stroginsky routes of the State Traffic Safety Inspectorate and the route of GAI Khimki

Lesson hour: automatic transmission - 750 rubles

Teaching methods: I help to overcome fear and insecurity on the road, quickly acquire or recover all the necessary driving skills. In the classroom, a friendly, calm atmosphere is created, I provide an individual approach to the student. More details

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Hope

Transmission: manual transmission, automatic transmission

Driving experience: 18 years

Teaching methods: Good afternoon. I help novice drivers to practice their skills before passing the traffic police exams on the Lobnensky, Pyalovsky routes and the examination route in Dolgoprudny and Khimki. In just a few lessons, we will thoroughly prepare for the exam by examining and working out the exam route in detail. More details

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Oksana

Transmission: manual transmission

Driving experience: 17 years

Study area: Central Administrative District, South-West Administrative District, Southern Administrative District, South-Eastern Administrative District, Warsaw route of the traffic police, Kashirskoe highway, Varshavskoe highway, Leninsky prospect, Kutuzovsky prospect, Volgogradsky prospect, Michurinsky prospect, st. Profsoyuznaya, st. Lublinskaya; cities: Vidnoe, Podolsk, Domodedovo, Vnukovo, Dzerzhinsky

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Evgeniy

Transmission: manual transmission, automatic transmission

Driving experience: 24 years

Study area: SSZAO, SAO, Khimki, Dolgoprudny, Lobnensky and Pyalovsky routes of the traffic police, traffic police route Khimki, traffic police route Dolgoprudny

Lesson hour: manual transmission - 650 rubles, automatic transmission - 750 rubles

Teaching Methods: Driving must be equally well versed in theory and practice. If it seemed to you that the knowledge that was given to you during the driving lessons was not enough, then it's time to turn to a private instructor. I will be able to quickly prepare you for the Lobnensky, Pyalovsky, Dolgoprudnensky and Khimki examinations of the traffic police. More details

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Catherine

Transmission: manual transmission, automatic transmission

Car: Chevrolet Lanos manual transmission, Chevrolet Aveo automatic transmission, training on your car is possible

Driving experience: 16 years

Study area: SAO, Lobnenskoye, Pyalovsky routes of the GAI, route GAI Khimki, Dmitrovskoe sh., Altufevskoe sh., Leningardskoe sh., Khimki, Dolgoprudny

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Olga

Transmission: automatic transmission

Car: Chevrolet Lacetti automatic transmission, training on your car is possible

Driving experience: 13 years

Study area: VAO, SVAO, YuVAO, Balashikha, Zheleznodorozhny, Lyubertsy, Mytishchi, Entuziastov highway, Shchelkovskoye highway, Yaroslavskoye highway.

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Anna

Transmission: manual transmission, automatic transmission

Car: Chevrolet Lanos manual transmission, Kia Spectra automatic transmission, training on your car is possible

Driving experience: 19 years

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Dmitry

Transmission: manual transmission

Car: Chevrolet Lanos manual transmission, training on your car is possible

Driving experience: 14 years

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avtoinstruktor199.ru

How to park a car with automatic transmission on a slope?

We lived in peace with the mechanics, stopped, turned on the 1st gear and went home quietly. And here you are, they came up with an automatic machine that seems to have a P mode - parking, but for some reason, together with it, you have to "tighten the handbrake", as some say. Is this so, and in general, how to park an "automatic", let's figure it out.

Firstly, it should be noted that the car manual strongly recommends using the “handbrake” together with the “parking”, but the question often arises: why?

The thing is that R - parking is nothing more than blocking the movement of the automatic transmission due to lowering the auxiliary rocker arm (the so-called "dog", in the photo below) onto the large-toothed gear, which prevents it from rotating.

At the same time, the mechanism blocks the automatic transmission output shaft and does not allow the wheels to spin.

Pay attention to the diagram, it is this little "tongue" that accounts for the entire load of the car on the slope (have you ever noticed that after leaving P the car already jerks? This is precisely because of the load on the "dog").

Despite the strength and reliability of the "parking" mechanism, there is nothing eternal in this life, therefore, due to the constant load, when the car is on a slope, the details of this mechanism are deformed over time. And the gear, and the spike, and the mechanical blocking drive - everything is under stress and when these parts are worn out, difficulties arise with turning on and off the "parking" even on a flat surface.

How to park a car with automatic transmission on a slope?

If we park on a slope, it is recommended to apply the following procedure: keep the brake pressed, move the automatic transmission selector to neutral, tighten the handbrake, and only then turn on the parking. Thus, the load will be distributed to the handbrake brake mechanism, which is much better "digest" such an effort than the "dog". And when we drive off, we do everything as follows: press the brake, turn off the “parking”, transferring to the “back” or into the drive, remove the “handbrake”, release the brake and start moving.

Why is the "handbrake" a double savior? Because when transferring the automatic transmission to the "parking", the car sometimes rolls down (movement up to a meter is allowed). This is normal and is because the gear turns a small angle before the cleat locks it. And this is important to take into account, especially when parking is tight, so as not to drive into the fence or into a nearby car.

If the place is relatively flat, a "handbrake" is not necessary at all. Therefore, in the case of parking on a flat area, you can limit yourself to "parking". But here it is also important to remember that if someone enters a parked car with automatic transmission (we do not wish this to anyone), then it is the parking mechanism that will suffer, which will significantly damage the automatic transmission and then you will definitely not escape from the costs.

Yes, you can ride with a broken parking mechanism, because it does not affect the performance of the automatic transmission itself and the gear shifting, but you must admit that you can walk with a bruised leg, but the convenience and comfort from this is not enough.

So what can you do?

• If you need to park on a slope - use the "handbrake" according to the instructions above;
• Pay attention to the state of the "handbrake" system before winter, so that nothing freezes;
• We only wash my car in winter after thoroughly drying the car after that.

Then both the brake system and the automatic transmission "parking" system will be in order.

dieselok.md

News of the day: "Handbrake" with automatic transmission: why? - Free Press

When the car is equipped with an automatic transmission (automatic transmission), the third pedal is perceived as a greeting from an archaic past. In approximately the same way, some "automatic drivers" refer to the "handbrake". It is enough just to put the automatic transmission selector into the "parking" mode - and not to bother setting the car on the parking brake. But everything is not as straightforward as it might seem at first glance.

What is the "P" mode responsible for?

“Why do you need a“ handbrake ”? "Parking" will keep a car on any hill. I always put my Kruzak like that. " There are plenty of similar statements on car forums. Many owners of cars with "automatic machines", if they use the parking brake, then only as insurance "parking". Not the least role in this case is played by "genetic memory": almost everyone learned to drive on "mechanics".

Meanwhile, very few of the ordinary car owners, who usually do not climb into the technical jungle, know how the "P" mode works on automatic transmissions.

The basis of the "parking" is a large-toothed gear and a rocker. By the way, the latter is also called "hook" or "dog". The rocker has a spike that fits between the teeth of the gear, thereby blocking it. It turns out that the output shaft of the box is locked, which means that the wheels will not be able to spin.

Such a blocker is activated either by mechanical traction, or by an electric servo drive.

It is not hard to guess that it is the spike and the gear that get the most, because they need to cope with the mass of the "steel horse" left on the slope. A reasonable question arises: how long are these "hard workers" able to last? It is impossible to answer it unequivocally.

In fact, the mechanism of "parking" in the "machine" is relatively simple and reliable. But, as you know, there is nothing eternal in the world. If the load on the spike and pinion is of a regular nature, and the "handbrake" is used only as an "interior", then gradually the parts of the blocker will wear out. And "for the company" the mechanical drive of the blocker also wears out.

Problems with the "health" of the node affect both the inclusion of the "P" mode, and its shutdown. This manifests itself in characteristic clicks and noticeable effort. And it doesn't matter on what surface - flat or downhill - these manipulations take place.

Auto with automatic transmission on a slope

If you have to park on the hill, then, as advised by the "box-makers", you need to do the following: press the brake pedal - engage the "handbrake" - turn on the "P" mode.

When you have to go down the hill, the order changes: brake - transfer of the automatic transmission selector to driving mode - "handbrake".

There is also an important point when the parking brake can do a good job. We must not forget that when the “parking” is turned on, when the foot no longer holds the brake pedal, the car can safely roll. Of course, it will not run far, but in conditions of limited space, even a slight "bunching" into a neighbor's car or a fence will hardly please anyone.

The movement of the car after turning on the "parking" is a normal phenomenon. After all, the spike does not instantly block the gear and during this time it manages to turn a little.

But again, if parking is supposed to be on a flat surface, then there is no need to put on the "handbrake" (here everyone is free to decide for himself) - the "P" mode will be enough.

But if suddenly another car crashes into the car and manages to pull it off, then, most likely, the "parking" unit will fail. And then you will also have to contact the gearbox specialists, although this malfunction does not affect the gear shift.

By the way, those who like to swarm around in the car on their own should not forget that "P" can only block the box itself, and the gears of the cross-axle differential will still rotate.

Accidents sometimes occur due to this design feature. For example, the car owner set the "P" mode, then raised his "steel horse" on a jack and began to "brake" the wheels. But if you twist one a little harder, the second will also start moving and ... "Sivka-burka" will hit the ground on the cheese. And it's good if at that moment no one is under the car.

Summarizing what has been said, we can draw a simple conclusion - it is better to use the "handbrake" as often as possible. And even on a flat surface. This will be better for the car owner and for the parking brake itself. Let him, as they say, be in constant tone.

An exception can be made only for the cold season, when there is a risk of freezing of the locking mechanism. For the rest, it's best to save the box.

Well, if a permanent parking place is supposed to be on all kinds of slides, then an additional retainer will help. The triangle-shaped wheel rest can be either wooden or metal - this does not matter. You just need to stop, put the selector in the "P" mode, substitute the "triangle" under the rear wheels, and then turn on the "N" mode and, having rolled back a little, bury yourself at close range. Simple and effective.

svpressa.ru

Parking a car with "automatic" on a slope: whether to put on the "handbrake"

When there is a mode in the box that prevents the car from rolling arbitrarily, is it worth using the "handbrake", making unnecessary movements, if you can simply turn on the selector to "P"? In addition, the "handbrake" can freeze and not turn off, not allowing the wheels to rotate, and simply not work, mechanically failing. In general, the question is not as simple as it seems at first glance.

As our monitoring of network autoforums has shown, the Internet community is almost unanimous about whether or not to put the "automatic" on the handbrake when parking on a slope, preferring to use not only the "parking" but also the "handbrake". As, by the way, the car manuals also recommend.

Although there are many and very dashing opinions like: “I have forgotten about the“ handbrake ”long ago and on any slide I leave my“ Gelik ”on the“ parking lot. ”This mechanism is very reliable, and no“ handbrake ”is needed here.

What is blocking the "parking"?

However, let's remember what the "parking" mechanism on automatic transmissions is. Its main elements are a large-toothed gear and a rocker (also called by the masters "dog", "hook", etc.), on which there is a spike that goes between the teeth of the gear and does not allow it to rotate.

Thus, the mechanism blocks the output shaft of the box and, accordingly, does not allow the wheels to spin. The blocker is driven either directly by a mechanical pull from the selector, or through an electric servo.

It is on the spike with the gear that the entire load from the mass of the car standing on the slope falls. Is this node able to withstand it for a long time? We will seek advice from a specialized service where automatic boxes are repaired.

What happens if you always park your car on a slope?

According to Leonid Khentalov, a repairman for automatic transmission of Trans Gear, the "parking" system in automatic transmissions of any type is quite simple and reliable, but nothing is eternal. Under conditions of constant load, which occurs when the machine is installed in the "parking" mode without a parking brake, the parts of the mechanism are gradually deforming.

This is a spike, and a gear, and a mechanical drive for the blocker. Hence, problems arise such as the difficulty of turning on and off the "parking" mode even on a flat surface. Many could notice that if the car is standing on a slope and release the brake before the "parking" mode is turned off, then it turns off with a characteristic click, and if the mechanism is worn out, then with a noticeable effort.

How to park a car with automatic transmission on a slope?

Putting the car on a hill, it is best to use the following procedure: hold the foot brake - tighten the "handbrake" - put the selector into the "parking" mode. Upon departure: squeeze the foot brake - turn off the "parking" - hold the foot brake - remove the "handbrake".

And, by the way, a "handbrake" is also needed because when the selector is set to the "parking", when the foot brake is released, the car can roll a little more (foremen say that there are cases of rollback up to one and a half meters). This is normal and happens because the gear has time to turn a small angle before the cleat blocks it. And this moment is important to consider when parking is tight, so as not to accidentally drive into a neighbor or a fence.

If there is no slope and the place is even, then it is not necessary to put on the handbrake. Therefore, when, when stopping and releasing the foot brake, the car does not go anywhere and remains in place, the "handbrake" can be left untightened and limited to "parking". The only moment, if in this case someone drives into your car at speed and moves it from its place, then the parking mechanism will most likely fail and the box will have to be repaired.

Although, in principle, it is still possible to drive with a broken "parking" mechanism - it does not affect the gearbox performance and gear shifting in any way.

And one more warning especially for those who like to repair the car themselves: it must be borne in mind that the "parking" blocks only the box, but the gears of the interwheel differential continue to rotate.

There are many cases when they simply put the car in the "parking lot" and then, having raised it on a jack, begin to "wiggle" the wheel, wanting to identify any malfunction there, find out the cause of the knock, and so on. I spun it a little harder, and - voila! - the second wheel also spun in the opposite direction, the car fell off the jack ... And it's good if there was no one under it at that time ...

What's the bottom line?

Only in extreme cases we put on a "parking" without a "handbrake" - for example, when the risk of "dead" freezing of calipers and cables is very high. And so we observe the instructions of the manufacturers, we take care of the box, we listen to the advice of the practitioners. And more often we use the "handbrake", even when parking on level ground - so as not to "sour". Winter car wash - only with thorough drying. Well, we hope for the weather, so that frosts do not hit the night after the thaw ...

Well, in general, if you live in a hilly area, you can use a wheel rest in the form of a metal or wooden "triangle" to fix the car on a slope. We got up for a couple of minutes in the "parking lot", put a stop under the rear wheels, put the selector in neutral and, rolling back a little, put the wheels against an obstacle. The algorithm, in general, is simple - the student can handle it.

avtomir.zahav.ru

How to use an automatic transmission

Now more and more cars are equipped with an automatic transmission. Many drivers have appreciated its convenience and practicality, but only a small part of them skillfully use the new type of transmission. Today you will learn what operating modes the automatic transmission has and how to use it correctly?

Mode designations

You can find out the machine by a small lever (selector), at the top of which a button is installed, and by a special board on which it is written in which mode the selector is currently installed. Below will be the decoding of each letter written on this board.

• P - Parking mode, or, as it is also correctly called, "parking". This mode acts as a wheel lock and is used while the car is parked to avoid accidental movement. You can use the "parking" only after stopping the car and turning on the hand brake.
• D - The most famous mode of the machine and is used much more often than other modes. The letter D stands for forward movement. All automatic switching is carried out in this mode.
• R - stands for "reverse" or movement of the car backward. It is applied only after the brake pedal is fully depressed and the vehicle is stopped.
• N - Just like on any other mechanical box, it means that there is no mechanical connection between the machine and the engine. This mode is used to warm up the engine before driving or for short stops, for example, in front of a traffic light.
• L - This is a low gear. If we compare it with mechanics, then it implies the movement of the car only on the first. It is necessary to use this mode for driving in difficult conditions, for example, off-road.

There are other additional modes that are used, for example, for braking with the D3 or S engine.

How to use an automatic transmission correctly

To avoid breakdowns when driving on the machine, you should adhere to a number of simple rules:

1. After starting the engine, depress the brake pedal completely and to the full stop and move the lever to position D. Next, turn off the handbrake and smoothly release the brake pedal. Just like on a manual box, the car will smoothly start moving. Then you can adjust the speed using the accelerator pedal.
2. When you hit the gas, the car starts to accelerate. Shifting gears will be accompanied by small jolts. To reduce the speed, you need to release the pedal and the machine will gradually lower gears as the speed decreases.
3. You can safely use the brake pedal to slow down quickly. In this case, it is possible to translate the selector only after the car has completely stopped.

Many automatic transmissions are equipped with a special winter mode of operation, which blocks the use of first gear. This mode is denoted in the form of the letter W or using the "Snow" icon. It eliminates any slipping of the car at the start and allows you to start moving smoothly. Downshifts are only carried out at low revs to avoid skidding.

Attention! In no case do not move the selector during any movement from position D to R or P. Such an action can instantly completely disable the automatic transmission.

To move the selector to these positions, the car must be completely stopped and the brake pedal depressed all the way. In addition, it is forbidden to move the selector to the neutral position when the vehicle is already moving. On a slippery road, such an action can easily lead to drift or skidding. This mode is recommended to be used during small stops to allow the automatic transmission to cool down.

What is Overdrive and KickDown

An overdrive is called blocking a hydraulic transformer when a hard link is turned on between the automatic transmission and the engine. This mode is called "OverDrive". It is designed to save fuel during extended driving in 4th gear. Many drivers mistakenly confuse this mode with fifth gear, because after switching it on, a characteristic jolt appears. In fact, there is no fifth gear, and a push means only a lockup of the torque converter. To turn on this mode, you must press the special lock button on the selector of the machine, and to turn it off, just press the button again, or sharply depress the accelerator pedal to the stop.

By the way, if you drown the gas pedal to the floor during normal use, another mode called KickDown will turn on. It is used for overtaking or just for a sharp acceleration of the car. In this case, the increase in gears will be carried out only when the engine reaches its maximum speed. For the box to go into normal operation, you just need to release the accelerator a little or completely reset it.

Some nuances of the automatic transmission

In order not to ruin your machine gun, you must adhere to some rules, which cannot be done with this box.

1. The box must be warmed up before you start moving. No automaton will in any case tolerate work "on a cold". To speed up this process, you can switch the selector on the spot, not forgetting to first press the brake. In addition, if there is no time to wait, then you can start moving, but use it without sudden accelerations, because the box needs more time than the engine to get into normal operation.
2. The automatic transmission does not like heavy loads. There is oil inside the crankcase, which, in addition to lubrication, is used to cool its assemblies and parts. With prolonged slippage or running at high revs, it heats up and loses its lubricating properties. Parts start to work at high friction and are subject to accelerated wear. That is why it is very important to monitor the oil temperature and check the oil level. It is possible to use the off-road machine only on special vehicles, the design of the gearbox of which allows this.
3. An important topic for an automatic transmission is towing. The fact is that the oil cooling pump on the machine can only work when the engine is running. If the box rotates from the wheels, then very soon the oil will overheat, and the parts will wear out very quickly. However, you can tow a car with a gun. To do this, you must adhere to a speed of no more than 40 kilometers per hour, and the distance should not exceed 30 km. At the same time, it is necessary to extremely carefully and responsibly monitor the temperature of the checkpoint and make small stops to let it cool down. The oil level in the box must be at the highest mark.

Very stringent towing requirements have arisen for all-wheel drive vehicles. It is allowed to move them only on a tow truck or with a removed cardan shaft. And in general, for any machine, it is best to call a tow truck.

Automatic transmission and handbrake

Almost all cars are equipped with a manual braking system. Cars equipped with an automatic transmission must have this important function without fail. In the operating instructions for cars with this type of transmission, it is said that it is recommended to transfer the selector to the parking mode together with the hand brake. However, in fact, many drivers argue that it is enough to simply use the parking mode for this. Most likely, such a measure is associated with a banal reinsurance in order to doubly protect the driver from an accidental roll of the car.

Still, the use of the hand brake was and is. First of all, it will be quite problematic to put the car in the “parking lot” with the handbrake not tightened. It can also be useful when replacing a wheel, as an additional safety measure.

In other cases, to study the correct operation of the engine, it is very dangerous to leave the car idling without a parking brake. This is due to the fact that the box will not allow turning on the parking mode. Therefore, you still need to use the handbrake.

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365drive.ru

More than 50% of passenger cars produced in the world are equipped with an automatic transmission, this is a fact, therefore, the issue of making the right decision in the event of an automatic transmission malfunction is very relevant today.

This article will help you understand how an automatic transmission works and what to do if a breakdown occurs.

How automatic transmission works in a car - principles of operation

In modern automatic transmissions, all mechanical manipulations of gear shifting are done for you by the hydraulics, i.e. - fluid for automatic transmissions. All the "mental" work (when and where to switch) is performed by the control and monitoring unit.

To understand how this happens, it is important to know that The automatic transmission consists of three main parts:

1. Torque converter.
2. Planetary gearbox.
3. Hydraulic control systems.

Torque converter (GT), by its purpose, is similar to the clutch mechanism on the manual transmission - with the help of it, the torque from the engine is transmitted to the rest of the transmission. However, constructively these are completely different units. Unlike a mechanical clutch, a hydraulic turbine transmits (and increases) torque through fluid.

Planetary gearbox (PR) receives torque from the gas turbine engine and transmits it to the drive wheels, while decreasing or increasing, depending on the driving conditions of the vehicle.

Hydraulic control system (SGU) opens or closes gear shift valves using solenoids. Due to this, the transmission fluid acts on certain brakes and clutches in the PR. There is a blocking or unblocking of certain gears. Thus, the required gear is shifted.

In earlier models of automatic transmission, the “decision” on gear shifting was also responsible hydraulic system , i.e. - the transmission was fully hydraulic. In modern units, the voltage to the solenoids is supplied by the control and monitoring unit, which receives data on the vehicle speed, engine speed, automatic transmission temperature and other indicators.

Based on this data, a decision is made to switch to a particular gear. Such automatic transmissions are usually called electronic .

Why the automatic transmission does not turn on and what to do - frequent questions from motorists about automatic transmission faults and expert advice

During the operation of the car, various automatic transmission problems may occur. However, some faults are more common than others. They will be discussed below.

• Why the automatic transmission does not turn on 1st, 3rd, 4th gear or speed - what to do?

So, let's figure it out, in order, with each transmission.

1. If the automatic transmission of your car does not turn on the 1st speed , and the machine starts sluggish movement from the second, most likely, the switching solenoid or the wire going to it from the control unit (CU) has failed. This problem is solved by replacing the defective part.
2. Otherwise, the car starts off normally, but does not switch to 3rd gear. The reverse gear works normally. The reason is most likely in the stuck valve, which is responsible for switching to this gear. To fix it, you need to disassemble the valve mechanism and clean the valve.
3. The situation is different with 4th gear. If the automatic transmission does not turn on the 4th speed at the required speed and engine speed, first of all you need to check if the Overdrive mode is turned off. In this case, the “O / D OFF” indicator on the dashboard usually lights up. Another reason is clogging of the valve, which is responsible for the transition to Overdrive. Cleaning the valve will correct the situation. However, this is not all. Until the fluid in the automatic transmission is heated to the required temperature, there will also be no switching to 4th gear. Therefore, if everything in the automatic transmission is working properly, and there is no 4th speed, you should check the transmission fluid temperature sensor and the wire going to it.

• Why the automatic transmission does not turn on the reverse gear or turns on with a blow - causes and remedies

In the event that the reverse speed is turned on with a tangible impact, the most likely reason for this behavior of the automatic transmission is friction disc wear ... Friction discs are one of the most important elements of a planetary gearbox. Their wear indicates that the automatic transmission needs a major overhaul.

If the reverse gear does not engage at all, the problem is in the brake band or related parts - the brake band piston, piston cuffs or piston rod. In all cases, the problem is solved by replacing the defective part.

• Why parking does not turn on at the automatic transmission - how to fix the malfunction?

It also happens that the car cannot be put into parking mode. Because of this, you cannot remove the key from the ignition female. And if it can be removed, then it will not be possible to start the engine after that.

To determine the cause of the malfunction, first of all - check if the brake lights on your car are working. No matter how naive this advice may sound, but it is in the electrical circuit of the brake lights that the selector lever lock is included (you switch this lever before driving), which is triggered when you press the brake pedal. If this blocker does not work, it will not work either to remove it from the parking lot or to put the car into this mode.

In this case, you need to check for a malfunction.

• Brake pedal.
• Electrical wiring from pedal to blocker.
• The blocker itself.

Another reason - cable malfunction connecting the lever with the selector on the automatic transmission. In the simplest case, it is enough to adjust the cable. Otherwise, it needs to be replaced.

Another source of malfunction could be strong mechanical impact (for example, shock) on the automatic transmission pallet ... In this case, the parking mechanism may simply fail. Repair of such a breakdown will consist in replacing the faulty part of the parking mechanism, or the entire mechanism as a whole.

• Automatic transmission drive does not turn on - what is the reason and what to do?

1. Drive mode (“D” mark on the selector lever) - basic driving mode. If it, for some reason, does not work, or it works - but malfunctions, this jeopardizes both the automatic transmission and the car's engine. Because the driving modes in low gears ("L", "2") are not intended for everyday use.
2. If the car does not drive when the drive is on - this means that the friction discs responsible for movement in this mode have worn out, or the clutch piston cuffs have torn. Usually, in the event of such a breakdown, 1st and 2nd gears work normally. The obvious fix is \u200b\u200bto replace the friction discs and torn cuffs.

As you can see, at first glance, the solutions to the problems are quite simple ... If you are well versed in technology and have all the necessary tools for repair.

It is necessary for the automatic transmission to work without breakdowns for a long time.

But, in any case, it is better to entrust your faithful assistant to professionals, so that, after trying to repair yourself, you do not look with surprise at the "extra" parts and, with regret, at an idle car.

Modern cars are easy to drive thanks to an automatic gearbox. So what is it about this automatic transmission, consider the device, the principle of operation and a common problem for a beginner - it is not possible to use a lever from the parking lot.

What is a parking in a box machine?

Like a manual transmission, the machine does the same job, only on its own. At the foot of the gearshift knob on the automatic gearbox there are the following designations:

1. P - This is parking and starting the engine. Parking is called. It is used to immobilize the car after the car has been parked and the handbrake has been applied. we have already studied the schemes: parallel and perpendicular options.
2. D - This is forward movement.
3. R - This is reverse. Reverse, that is, movement in the opposite direction. It can only be activated when the brake pedal has been fully depressed and the vehicle has stopped. If correct, it will turn on when reverse gear is engaged.
4. N - This is the neutral position. In neutral, the engine does not transmit rotation to the automatic transmission. Used for long stops or for warming up a car.
5. L - This is a low gear. It is used for slow movement, for example, when you have left the road, but you cannot go fast there. In fact, this is an analogue of the 1st speed of a mechanical box.

Automatic transmission: device

This device is a type of transmission that automatically selects the right gear ratio suitable for the driving speed.

1. Hydraulic transformer housing.
2. Driven wheel (turbine).
3. Reactor wheel.
4. Drive wheel (pump).
5. Oil pump.
6. Excitation windings of the electric motor.
7. Torque converter lock-up clutch ().
8. Damper.
9. Torque converter housing.
10. Transmission housing.
11. Locking clutch friction discs.
12. Locking clutch housing.
13. Planetary.
14. Flange of the driven shaft of the gearbox.
15. Oil pan.
16. Hydraulic shift control valves.
17. Valve box.

How to use an automatic transmission correctly?

As with any automatic system, automatic transmission requires careful handling. The correct operation of the automatic box consists in the following actions:

1. Start the engine, warm it up, especially if it's frosty outside, as the oil in the engine and in the automatic transmission thickens, which leads to strong friction of the mating parts. Find out, .
2. Depress the brake pedal as far as it will go and set the gearbox lever to position D (drive).
3. Remove the car from the hand brake and smoothly release the brake lever. Then the car will start moving slowly.
4. We press on the gas pedal and as the speed set for each gear increases, the machine itself will start to change gears. Switching the machine is accompanied by small jolts. Perhaps, if there is a malfunction in the operation of the automatic transmission system, then this is due to, which often has to be repaired in some brands and models of cars.
5. With a decrease in speed, such a gearbox begins to downshift itself.

Some automatic transmissions have W modes or Snow. This means that with W mode, that is, the box is set to winter mode. In winter mode, the machine does not use the first gear, the car starts off with 2nd or 3rd gear. This causes the car to slip less and reduce gears just to avoid skidding at low speeds.

Important! To prevent the automatic transmission from breaking, one very important rule must be observed: do not move the selector (lever) when the car is moving from position D to R or P. This rule should not be forgotten if the car is lifted by a jack or a lift and D mode is turned on to check the brakes at the stand ...

It is possible to translate the automatic transmission selector only after the car has completely stopped and the brake pedal is fully depressed.

It is forbidden to switch to the N-neutral position when the car is driving, so as not to create an emergency situation on the road, especially if there is ice. It is necessary to put on "neutral" at long stops so that the automatic transmission cools down.

OverDrive Mode

Overdrive mode is an overdrive gear, when turned on, the motor and automatic transmission are rigidly coupled by blocking the hydraulic transformer.

Overdrive is used when you need to drive at the same speed in fourth gear for a long time. When this mode is turned on, the driver feels a slight jolt, as if it has shifted to 5th gear, but, in fact, it is the hydraulic transformer blocked.

OverDrive is activated by a button on the shift lever. And it also turns off by pressing the button a second time. Also, the implementation of disabling this mode can be done by pressing the gas pedal all the way.

KickDown mode

If on a car with automatic transmission you press the gas pedal sharply to the floor, the KICKDOWN mode is activated. On the machine, this mode is used for sharp acceleration, which is very convenient when overtaking or getting ahead of other vehicles.

In KIK DOWN mode, the box will only switch when the engine speed is at its maximum.

If you need to turn off the acceleration on the machine, then just take your foot off the gas pedal or release the pressure on it.

Why is it not removed from the parking in the automatic transmission

The first step is to check if the brake lights (brake lights) at the rear are on. If they do not light up, check the STOP fuse. A fuse is the most common cause of equipment failure, so you need to check it from it, and this is the easiest repair. The STOP fuse is located in the passenger compartment or under the hood fuse box.

If the fuse is working, there are no burnouts, then the next step is to check the brake signal switch. The contacts are often oxidized and are the cause of the circuit breakdown, due to which the brake lights do not light.

If the brake light switch is fully functional, then you need to check the automatic transmission control cable. It so happens that the labels get confused and need to be re-configured.

If the cable is serviceable, then check the selector switch (lever) sensor. If there are problems, it must be replaced.

If the sensor is normal, then we check the automatic transmission itself. Diagnostics of an automatic box is checked with a special scanner, when connected, an error code appears on the screen of a connected laptop or phone, which must be deciphered.

The automatic transmission test before 1998 with an OBD-1 or OBD-2 scanner is carried out in the following order:

1. Warm up the engine, drive at a speed above 20 km / h.
2. Stay. Stop the engine. We leave the ignition key in the lock.
3. Turn on the ignition, but do not start the starter.
4. Switch off ignition.
5. Put the selector in position D using the emergency button. Also include hold. In this case, Power does not need to be touched.
6. Switch on the ignition.
7. Set the selector to position 3 and turn off hold.
8. We put the selector in position 2 and turn on hold.
9. Set the selector to 1 position and turn off hold.
10. Press the gas pedal 2/3, that is, more than half. Wait 4 seconds.
11. Watching the Power indicator. When blinking in slow motion, you have to read the errors. If Power blinks frequently, then there are no errors.

Automatic transmission text with a production year later than 1998:

1. Switch on the ignition.
2. Switch off ignition.
3. Switch on the ignition.
4. Put the gear knob in position 1.
5. Switch off ignition.
6. Switch on the ignition.
7. Lever to position 2.
8. Knob to position 1.
9. Knob to position 2.
10. Knob to position 3.
11. Knob to D.

We look at the indicators.

Here are examples of errors:

11 open circuit, short circuit or seized solenoid valve a
12 open, short circuit or stuck solenoid valve b
13 open, short circuit or stuck switching solenoid valve 3
14 open, short circuit or stuck switching solenoid valve 2
15 open, short circuit or seized shift solenoid valve 1
21 open, short circuit in the ATF temperature sensor circuit
22 open, short circuit in the air mass meter circuit
23 open, short circuit in the engine speed sensor circuit
24 open, short circuit or stuck solenoid valve c
25 open, short circuit in the torque control signal circuit
31 open, short circuit in the throttle position sensor circuit
32 open, short circuit in the vehicle speed sensor 1 circuit
33 open, short circuit in the vehicle speed sensor 2 circuit

75 Automatic transmission Incorrect switching sequence. Automatic transmission diagnostics required.
79 Automatic transmission Overheating of automatic transmission, automatic transmission diagnostics is required.
81 Automatic transmission Incorrect voltage in the switching solenoid circuit 2-3; automatic transmission diagnostics is required.
82 Automatic transmission Incorrect voltage in the circuit of the switching solenoid 1-2; automatic transmission diagnostics is required.
83 Automatic transmission TCC solenoid circuit - high voltage on the solenoid when activated; automatic transmission diagnostics is required.
84 Automatic transmission Incorrect voltage in the solenoid circuit of switching 3-2; automatic transmission diagnostics is required.
85 Automatic TCC solenoid jammed - automatic transmission diagnostics required.
90 automatic transmission Incorrect voltage in the TCC solenoid circuit; automatic transmission diagnostics is required.

What not to do with automatic transmission

The device and the principle of operation of the automatic box assumes the following types of prohibited actions:

1. Always warm up the car before driving. When working on a cold automatic transmission, the resource decreases, especially in severe frost, when the transmission oil thickens. To choose the right transmission oil, was compiled. You can move the selector to different positions with the brake pedal depressed. If you need to go urgently, then the sparing mode of the automatic transmission in this case will be a smooth start-off and movement without jerks.
2. Automatic transmission is a "soft" technical device that does not like crazy loads and jerks, which are done by amateurs. Switch to low mode L when off-road.
3. If a car with an automatic gearbox does not start, then you should not try to start it by towing. You can tow it, but at a speed of no more than 40 km / h and at a distance of no more than 30 km. This is because the oil pump only runs when the engine is running. And when towing, rotation is transmitted from the wheels and further through the box, therefore, without oil supply, wear will be faster. It is better to use a tow truck if possible.
4. If the car is with four-wheel drive and with an automatic transmission, then such vehicles in case of breakdown can be transported only on a tow truck or, if in tow, then with the cardan removed.

Using the hand brake with an automatic transmission

Both cars with mechanics and cars with a machine must be equipped with a hand brake. It often breaks down on the mechanics and the drivers do not bother to repair it. But, if the automatic transmission, and not the manual transmission, then the handbrake must be repaired in the event of a breakdown.

In the operating instructions for a car with a machine, it is recommended, after stopping the car, to set the selector to the P (parking) position immediately before or after turning on the hand brake. But, many drivers do not put on the handbrake, they only leave the parking lot. But, it is better to install a handbrake, especially on a slope. Extra security doesn't hurt.

With the engine running with the selector in neutral position, it will not be possible to switch the lever to the parking lot, since the hand brake is not applied. This is good safety for the forgetful or careless driver.

Useful videos about operating an automatic transmission

There are automatic transmissions with tiptronic, that is, it is possible to transfer control to manual mode + and -.

The gearbox (gearbox) is the main structural component of the auto transmission system. Today you will learn about what an automatic transmission is, how the automatic transmission works, whether it is necessary to switch to neutral in a traffic jam and other nuances.

It has long been no secret that domestic motorists for a long time treated vehicles equipped with automatic gearboxes with caution. However, over time, more fans of such checkpoints appear, and "automatic machines", one way or another, begin to displace "mechanics". Today this is clearly pronounced in Japan, the USA and Canada, where more than 90% of vehicles are equipped with automatic transmissions.

Perhaps the main difference between an automatic transmission and a manual transmission is gear shifting with virtually no interruption in the power flow. That is, when one speed turned off, the other gear turned on at almost the same moment. Strong jerks when shifting gears are almost impossible, which cannot be said about the "mechanics". However, vehicles with automatic transmission have their own operating rules, if not observed, the unit may breakdown.

Comfort is an integral advantage of driving a car with an automatic transmission. The automatic transmission torque converter allows for softer driving conditions and operating conditions not only for the car engine, but also for its chassis as a whole.

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Parking mode

If you are the owner of a car with an automatic transmission, you should know what each driving mode is intended for, indicated on the gearshift lever. It is necessary to switch the "Parking" (Parking) mode while the vehicle is parked. By turning on this unit mode, a special device is launched in the automatic transmission, which locks the car in such a way that it cannot be moved.

Remember: the only time when you can turn on the parking mode on the lever of the box is a complete stop of the car, otherwise you are guaranteed a breakdown. Many owners are faced with errors that subsequently lead to fatal consequences - they turn on the "Parking" mode at a time when the car is not firmly fixed in place, but can still coast. Accordingly, if you park the car on a slope, then before turning on the "P" mode, you must put the car on the parking brake. This will help extend the life of the transmission lock.

Correct inclusion:

• press the brake pedal;
• pull up the parking brake;
• release the pedal (the vehicle may move slightly);
• turn on the "Parking" position on the box.

Correct shutdown:

• move the gearshift lever to the driving position;
• by pressing the brake pedal, remove the "handbrake";
• turn off position "P".

Reverse mode - "Reverse"

As the name implies, this transmission mode is designed to drive the vehicle in reverse. Reversing is also allowed after a complete stop of the car in order to increase the service life of the car.

If you turn on the speed with the brake pedal depressed, then, of course, your car will not go immediately. But, as soon as you release the pedal, the vehicle will immediately start moving backward, of course, if it is not standing uphill. This is due to the fact that the engine is constantly pushing the car itself, even if you are not pressing the gas pedal.

What you need to know when driving backwards: the box recognizes the driver's commands while moving the foot along the gas pedal. " So if you hit the throttle when driving backward, expect the movement to be sharp.

Remember! Turning on this automatic transmission position while driving forward, you damage the box and other components of the transmission system and engine.

Neutral mode

In this mode, the car will move forward or backward without turning on the motor. Thus, it can be moved, but only over short distances with the engine off. The most common mistake of owners of cars with automatic gearboxes, which is associated with a neutral gear, is its inclusion during a short-term parking (for example, in a traffic jam). Domestic drivers regard the neutral speed at the automatic transmission as identical to the "mechanics" and often practice turning it on when they would have turned it on at the manual transmission.

But this is far from the case. "Automatic" is a more complex and "tricky" unit than "mechanics", and the purpose of the neutral transmission of the box (N) was in the "service" mode. That is, this function of the box is designed to move the vehicle without the participation of the motor. In general, this transmission is not allowed on a permanent basis.

In order to ensure a longer service life of your gearbox, standing in traffic jams, experts are strongly advised not to engage in neutral gear. If you want your legs to rest a little while driving in a long traffic jam, then turn on the "Parking" mode, of course, if the car will not coast at that moment. However, it is not necessary to switch to neutral as this will only harm the vehicle.

Video from Oleg Konyaev "The structure and operation of an automatic transmission"

This video tutorial describes in detail the device and the principle of operation of the "automatic" box.

Moving forward - "Drive"

The inclusion of this mode ("D" on the lever of the box), as you understand, ensures the movement of the vehicle forward. On most vehicles equipped with an "automatic" gearbox, this speed is protected against unintentional activation. Accordingly, its activation is possible only after the brake pedal or the button is pressed directly on the gearshift lever. Without pressing the brake pedal, attempts to engage this gear will be blocked by the protection mechanism. When this mode is enabled, the transmission automatically shifts gears while driving.

Here the box functions according to the same principle as when the reverse stroke is turned on, that is, the engine itself pushes the car, even when the gas pedal is released. If you need to accelerate sharply, for example, overtaking another vehicle on the road, then do not be afraid to press the gas pedal all the way to the floor.

Probably, the main drawback of the traditional "automatic" is a small delay between pressing the gas pedal and the real acceleration of the car (about one second). This is not so noticeable when driving quietly, but can be noticeable when overtaking.

4-3-2-L

When this mode is activated, your automatic transmission will engage certain gears: in position "L" - only the first speed, in mode "2" - only two speeds, and so on. Enabling this mode is relevant when the vehicle is moving in difficult conditions, for example, on an overpass or on mountain roads.

If you are driving on a slope or uphill for a long time, you can turn on mode "2" or "3" in order to prevent overheating of the brakes. Thus, the car will go no higher than second or third speed. It should also be noted that the inclusion of the first or second gear will be advisable when trying to drive up a steep hill. So your automatic transmission will not switch to an upshift at the most inconvenient moment and will not stall.

As the owners of cars with an automatic transmission say themselves, the inclusion of the third gear is advisable when carrying out quick overtaking while driving on the highway. At third speed, overtaking occurs at higher engine speeds and the vehicle develops the highest power, which allows the car to be best accelerated. The average speed limit is about 130 km / h, but it all depends specifically on each car model. Moving in third gear, you need to make sure that the tachometer needle on the instrument panel does not go over the red line.

When driving in second gear, the speed limit is around 70 km / h. According to car owners, it is advisable to include this transmission on rather steep slopes, or on a slippery road. In turn, the activation of the first gear is necessary when driving in rural areas and under other difficult conditions. Here the speed limit is limited to 40 km / h.

Today, in most modern cars, this mode is replaced by the "Tip-Tronick" function - it is designed to manually switch gears to automatic transmissions. But there are also boxes on which, when the "4-3-2-L" is activated, the gearbox automatically switches speeds at increased engine speeds.

Video "Modes of operation of an automatic transmission"

This video describes in detail the positions of the speeds on the automatic transmission and other nuances of the automatic transmission.

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