With the development of the automotive industry, more modern instrument panels (PP) began to be used in vehicles. The PP is used in order to inform the driver about the main parameters of the engine operation, as well as to warn about possible malfunctions in the operation of systems and nodes. What does exclamation and other indicators mean - the description of the main icons is given below.
Information indicators
Light bulbs on dashboard can report both breakdowns in the operation of the engine and other systems, and be of an informational nature. In any case, the car owner must be able to decipher the "messages" that the control module transmits in order to fix the problem in a timely manner in the event of a breakdown. First, let's look at the description of information indicators.
| Icon | What does |
| A yellow wrench in the background of the car indicates that the system has detected a malfunction in the engine. An EPC breakdown indicator may indicate a malfunction in the operation of sensors or controllers, sometimes a wrench icon appears when the electronic component of the transmission is malfunctioning. Exactly what this error means, the computer diagnostics of the car can tell. | |
| The red indicator in the form of a car with a lock usually lights up in case of malfunctions anti-theft system, in particular, we are talking about a standard installation. In practice, such faults are usually accompanied by the inability to start. power unit... If the indicator just flashes when the car is closed and its security is activated, then you should not worry. | |
| The exclamation mark indicator can only appear in a vehicle with a hybrid powertrain, its appearance is due to problems with the device electric drive... When such an indicator appears, it is better to execute computer diagnostics - this option is the most relevant if you want to get accurate information about the breakdown. | |
| Car icon with open door may light up on the instrument panel if the ignition is turned on or the car engine is running, and one of the doors is open. This can also apply to the boot lid as well as the bonnet. If you have checked the doors and are sure that they are all locked, then most likely the reason is inoperative limit switches that are installed on the doors or on the pillars between the door and the body. It may be that the electrical circuit for connecting the limit switch is damaged. | |
| The ESP badge is the vehicle stability sensor. The indicator may appear if the system has detected a slippery road section along which the car is moving. This unit is activated to prevent wheel spin by reducing the power of the power unit. In principle, the appearance of the icon does not threaten the car with anything bad, since the indicator itself is informational. However, if a yellow triangle, wrench or wear symbol near the light comes on, then you need to worry about the system's performance. | |
| The wrench symbol in yellow tells the driver that the time has come maintenance vehicle... You need to change the oil, check filters, etc. When maintenance is complete, the indicator can be reset by briefly disconnecting the battery terminals. |
Dashboard warning icons
Now we suggest that you familiarize yourself with the warning indicators on the tidy. Let's consider only the most common symbols (video posted by Kirill Mukhin).
| The yellow steering wheel symbol indicates that the steering system must be adapted. If this indicator lights up red, then it is necessary to diagnose the performance of the amplifier, which can be electrical or hydraulic. | |
| The key symbol on the background of the car, as a rule, flashes after the car has been armed. If the lamp is on without blinking, this indicates possible problemsthat occurred in the health of the system. Usually, the appearance of the symbol is due to the fact that the anti-theft system mechanism cannot read the label from the key, or because the installation did not turn on. | |
| Icon hand brake always lights up when the parking brake lever is raised, as well as in the event of a malfunction, in particular wear brake pad... Sometimes this symbol appears when it is necessary to add a working brake fluid into the expansion tank. If the pads are intact, the liquid level is normal, and the indicator is on when the lever is released, then most likely you need to change the "brake" level sensor, it is in the reservoir with the liquid. | |
| The yellow coolant symbol indicates the need to add consumable into the tank. The indicator may light up if the sensor or float breaks in expansion tank, and if it lights up red, then the power unit may have overheated. Before adding antifreeze, you need to eliminate the cause of its leakage, and also make sure that the motor is not overheated. | |
| The symbol for the washer system appears when there is not enough level of washer fluid or water in the reservoir, in some cases the cause is a clogged level sensor. In more modern cars the icon may appear if the fluid used is not correct. | |
| Indicator anti-slip system... If the symbol lights up without interruption after starting the engine, then apparently there is a problem with the system. The indicator itself may look different, it all depends on the car. | |
| This is the catalyst icon and will usually light up after the unit has overheated. A concomitant symptom is a lack of engine power. Overheating may be due to poor bandwidth honeycomb catalyst or malfunctions in the ignition system. If the catalyst fails, the consumption of the consumed fuel should also increase. | |
| Such a lamp indicates that there is a problem in the exhaust gas cleaning system. In practice, this light bulb appears most often after the car has been filled with low quality fuel. The reason may be due to the inoperability of the lambda probe. |
Photo gallery "Dashboards of different cars"
1. Tuned PP in VAZ 2109 
2. Tidy Volkswagen Golf 
3. Renault Logan tidy 
4. Control panel of Toyota Camry
Fault signaling lamps
Now let's look at the indicators that indicate problems.
| A red battery symbol illuminates on the control panel if there is no battery charge from the generator set. In case of hybrid vehicles, the appearance of such a light bulb will be accompanied by the inscription Main. | |
| A lamp in the form of an oiler informs the driver that there is a shortage in the power unit motor fluid... The symbol always appears when the ignition is activated and disappears after the engine is started. If the indicator lights up after starting the internal combustion engine, then you need to check the oil level in the engine, all leaks must be eliminated. | |
| Malfunction in the functioning of the airbags. Need pillows if happens emergency situation or a collision, the pillows will most likely not open. | |
| Such a symbol can be made in different variations. If the color of its glow is red, then malfunctions have appeared in the functioning of the brake system, so the system must be checked before starting the movement. The lamp can come on as a result of a lack of brake fluid in the reservoir or worn out pads. It is possible that the reason for the appearance of the lamp is associated with a breakdown of the sensor. | |
| The on-board computer recorded a malfunction in the functioning of the ABS. If the roads are icy, then the problems must be eliminated, since such driving can be very dangerous. The brake will still function, but aBS system does not work. | |
| The Check Engine light comes on when a electronic unit management of malfunctions in the operation of the power unit. There can be a huge variety of reasons in this case, so it is necessary to do computer diagnostics. | |
| Glow plug malfunctions - this symbol is only found in diesel vehicles. If the bulb is constantly on, it is necessary to check the ignition system. |
If you are faced with the problem of the inoperability of the dashboard, the video below will allow you to familiarize yourself with the repair process using the example of a Volkswagen car (video filmed by altevaa TV).
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Asks: Smirnov Sergey.
Essence of the question: On fire exclamation point on the VAZ-2112 instrument panel, I don’t understand why?
Good afternoon! I sometimes get an exclamation mark in a circle on the dashboard, most often it happens when braking! Please tell me what could be the reason and how to solve it?
Why does the exclamation mark (!) On the instrument panel light up?
The moment the car is braking, the brake cylinders move forward as far as possible, thereby acting on the pads. At this time, the cylinders are filled with the required amount of brake fluid in the system, and its the level in the reservoir drops. It is for this reason that such an exclamation mark lights up. on the dashboard, informing the driver about the minimum level of brake fluid in the reservoir, and accordingly in the system as a whole.
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All my life I've been surrounded by cars! At first, in the village, in the first grade, I ran around the fields on a tractor, then there was JAWA, after a penny. Now I am a third-year student of the "Polytechnic" at the automotive department. I work as a car mechanic, helping to repair cars to all my friends.
Video with an overview of all control lamps on the VAZ-2112
Reasons for the appearance
When such an indication occurs, first of all check the sensor itself which is located in the brake fluid reservoir. It is a float that actively interacts with the brake fluid.
When the float is dismantled, it must be removed with a rag.
In order to check its serviceability, it is necessary, with the engine running, to remove it from the tank body and manually change the position of the float. If the indication on the instrument panel does not disappear and does not react in any way depending on the effect on it, then the sensor is faulty and must be replaced.
However, if the sensor is working properly, there may be a brake fluid leak.
Where can the brake fluid leak?
Inquire about availability required level brake fluid in the system is very easy as it is visible visually through the brake fluid reservoir. His level must always be closer to the "max" mark, and if it is significantly less, or its level has dropped, then a leak is possible.
Brake cylinder
There is a leak in the front brake cylinder
The first step is to inspect the brake cylinders on all wheels for leaks.
As a rule, leaks most often occur on the rear drums due to excessive overheating. It is not difficult to notice a leak on the cylinders, since in the case of the front cylinder, the smudges will be noticeable on the caliper, and on the rear one, it can drip directly from the drum. Problems with these elements usually occur during the cold season.
Brake hoses
There are cracks in the brake hose.
It is also very easy to determine the presence of a break or cracks in the brake hoses, since it is all visible to the naked eye. Most often, they crack in places of bends or due to friction with adjacent elements of the car body.
Brake master cylinder
Brake fluid marks are clearly visible on the body.
While inspecting the brake master cylinder, inspect its external condition for visible smudges.
The main place where a rupture can occur is the gum closest to the vacuum booster.
The location of the vacuum brake booster and the brake master cylinder
If a leak occurs, it will drip onto the gearbox housing, and then onto the CV joint on the left side. It is easy to notice, and after that you can start replacing it.
- If you find any of the above items defective, it must be replaced immediately. Since the operation of the car with such malfunctions is impossible.
- After the brake system element has been replaced, be sure to do it, since air will accumulate in the system during work.
conclusions
Please note that replacing the brake fluid is also necessary, because over time, it accumulates water particles from the air and its work becomes less efficient.
Hello! Today I want to raise a rather relevant topic that worries, judging by the questions on the forums and the number of requests in search engines, a large number of people. I want to talk about this phenomenon, when when you press the brake pedal, an exclamation mark lights up on the panel.
I will try to give an exhaustive answer to this question and explain why this happens and what kind of breakdown may be involved in this. Go!
I'll start with the fact that if a lamp on the panel lights up (!) It means with braking system something is wrong. As a rule, this indicator signals a low level of brake fluid (TJ) in the system. As you can imagine, faulty brakes are no joke, and the problem must be solved. I will say more if someone does not know, TO OPERATE A CAR WITH A LIGHTING INDICATOR (!) - FORBIDDEN! Since you do not know what the matter is and what caused this error to appear on the dashboard.
When does an exclamation mark light up?
- Low level of TJ.
- The problem is bad contact. As a rule, we are talking about the sensor connector on the main brake cylinder (GTZ).
- Break. Wiring problem or open circuit.
- The brake fluid level sensor (DUTZH) is faulty.
- There is something wrong with the instrument panel.
What to do if the lamp lights up?
- The first step is to check the TOR level. This is done simply and without any difficulties. Open the hood and look at the level, it should be between the "MIN" and "MAX" marks. The level must be constantly monitored, for those who forget to do this and there is an exclamation mark. It lights up on a signal from the sensor, which signals when the level of TJ is below the permissible level.
By the way! It is not uncommon for the light to light up when driving over bumps and go out as soon as the car left on a more or less flat road. This happens precisely for the reason that the "brake" level is close to the "MIN" mark and during the rocking of the car the sensor fixes low level and signals this to the instrument panel.
- If everything is in order with the brake fluid level, it is necessary to check the DUTZh, which is located in the GTZ tank. How to do this, I will tell you now.
2.1. Turn on the ignition and make sure that the exclamation mark lamp is on, that is, the indicator of insufficient TJ level. It should light up and go out if the level is normal and the sensor is working properly.
2.2. We turn off the power from the sensor and look at the lamp, if it goes out, most likely there is a problem with the sensor. Check the sensor, sometimes the problem is that the float breaks down and sinks to the bottom, even though the TJ level is in order.
2.3. If, after disconnecting power from the sensor, the exclamation mark on the panel continues to burn, most likely the problem is in the wiring, and the sensor itself is working. Perhaps the reason is a short circuit in the wiring, or something else, but one way or another, the problem will be associated with a wiring malfunction and a violation of its integrity.
If you have everything in order with the TG level sensor, but you want to check its operation, this is done quite simply
2.4. We press on the rubber seal on the tank lid, so you lower the sensor float to the bottom, while the exclamation mark on the panel lights up in the serviceable sensors.
2.5. If the indicator does not light up, take a small piece of copper wire and disconnect the power from the brake fluid level sensor. With a prepared wire, it is necessary to close the sensor power contacts, that is, the contacts on the wiring that is connected to the sensor, and not the contacts of the sensor itself. With such a short circuit, a corresponding signal about a low brake fluid level should appear on the panel. If this does not happen, most likely the sensor is working, and the problem is faulty wiring.
