Button to start the electric engine. Installing the "Start-Stop" button instead of the ignition switch - detailed instructions

Button to start the engine- an innovation in your daily use of the car. An increasing number of modern cars are getting rid of the old ignition key starting system. In the article we will find out what the button hides behind itself. Start Engine..

Why alter the start of the engine from the key to the button at all?
Some people like the process itself (sat down, pressed the button and drove off), others the button adds +5 to the coolness :), and some want to reduce the gentleman's set, which must be taken with them to the car, minimizing it to one alarm key fob.
However, you may still need the ignition key when the door locks freeze after washing in winter.

How to start the engine through the button?
I will make a reservation right away that there are a lot of options (schemes) for installing a button to start the engine. There are many of them because there are many nuances:

About the ignition key:

The key to start the engine through the button is used (insert the key, turn it - the ignition turns on, press the button - the engine starts)
The key to start the engine through the button is not used (sat down - pressed the button - the engine started)

About the engine start button:

Button for starting the internal combustion engine you need to press and hold (the starter turns while the button is pressed)
The button to start the internal combustion engine must be briefly pressed (pressed the button and released it - the starter itself spins for a certain time until the engine starts)

About ignition:

Through the button, you can separately turn on the ignition (pressed the button - the ignition turned on, pressed the button and the brake pedal - started the engine)
You cannot turn on the ignition separately through the button (the ignition is turned on together with the starter)

Combining different options, we will get different schemes each time, and these schemes can be drawn up in different ways.
I will try to show the main points of connecting the Start / Stop Engine button, from the simplest to the most complex.

A simple scheme for starting the engine by a button an ordinary motorist who is not strong in an electrician will also collect.
To make a complex circuit with start delay, timer, etc. It will take the experience of an electrician and a lot of relays, which makes the design not entirely correct. Complex algorithms of work, it is better, of course, to collect on a microcontroller, but first things first:

Engine start button (with ignition key)

When assembling any of the diagrams below, you must use wires with the same cross-section that is used in the ignition switch.

Do not forget that the VAZ is a simple car, therefore, the solution to the issue should be as simple as possible.
This way to make a button to start the engine with your own hands is, in my opinion, the easiest.

Work algorithm:

The button does not work without a key
The key must be inserted and turned to position 1.
Press the button (hold) until the engine starts (the button is momentary).
Turn the key to position 0 and turn off the engine.

The button does not work when the engine is running, that is, the starter does not spin, but starts working after the engine is turned off and the ignition is turned on with the key.
In simpler language:
We take the ignition relay from the VAZ 2109 with a block of wires. (4 wires in total, 2 high-current circuit (yellow contacts on the relay itself) and 2 low-current circuit (white contacts).
We throw one of the wires of the high-current circuit to contact 15 of the ignition switch, and the second to contact 30 of the same lock (in general, one is pink, and the second is red).

We throw one of the wires of the low-current circuit on the "-" ground, and the second on the green wire on it, "+" appears when the ignition is turned on (done so that the starter does not work without a key by pressing the button) and we interrupt the wire from the relay to the green wire with our button !

Video of starting the motor with a button (the button must be held):

The disadvantage of the scheme and at the same time an undoubted plus is its simplicity (the simpler - the more reliable :)).
Another example of starting an internal combustion engine through a button on a VAZ 2110-12:

Disadvantage of the 2nd scheme: a slight delay in turning off the starter after starting the engine (if the relay is turned off not on a command from the generator, but from the signal wire of the injector unit, which gives this delay).
Whether this affects the durability of the starter is unknown.

Button to start the engine (with relay ZPTF)

Unlike the previous method, in this scheme, you can get rid of the ignition key.

The circuit uses the ZPTF relay(rear relay fog lights), which is sometimes difficult to find on sale (numbers 21.3777 and 22.3777). Relay 2114-3747610 is not suitable.
Therefore, the ZPTF relay can be assembled independently.

You need a thick wire with a terminal connected to the pink one.
Yes, and there are still thin wires: we insulate the red and blue with a strip, and we throw the gray on the ignition or connect to the red one, otherwise the BSK will not work.
Any diode will do.

It is convenient to connect the backlight of the button and the power of the relay not to the battery, but to the alarm: disarmed - the engine start button lights up, that is, you can start.

Work algorithm:

We disarm the car - on contact 1 of the ZPTF relay and the button appears + 12V (the button illumination comes on)
Press and hold the button - the ZPTF relay, the ignition relay and the starter relay turn on, the indicator in the button lights up and the starter turns (momentary button). That is, both the ignition and the starter are turned on at the same time.
After starting the engine, release the button - the starter relay is turned off, and the ignition remains on.
Arrived at the place, pressed the button - the engine stalled.
Installed on the alarm - 12V was gone and the button went out.

If the engine has stalled, then press the button - the ignition will turn off, press the button a second time - the engine will start.

The entire assembly of the circuit and installation in the car took about 5 hours. (with a trip to the store for details.
The price of parts is about 400 rubles.

Video of starting the motor by a button (method 2)
Method 3:
The circuit is based on the ZPTF and EPHH relays:

Work algorithm:

The car is on the handbrake, press the button and release - the standard circuit turns on (circuit with ZPTF) and energizes the ignition relay, as well as the EPHH unit. Also, 2 relays K1 and K2 are switched on, which stand on self-locking due to relay K1. K2 turns on the starter relay (since the handbrake is raised).
The starter starts to rotate and as soon as the speed rises to 1100-1200 relays K1 and K2 are switched off and then not switched on. The starter is disconnected.
We remove from the parking brake and go. (the starter does not turn on while the handbrake is lowered).
We arrived - we do not touch the handbrake, but simply press the button and everything turns off (Relays K1 and K2 do not turn on, because the unit is disabled by weight with the handbrake, plus it is de-energized by the ZPTF relay). After we raise the handbrake.
If you just need to turn on the ignition, then release the handbrake, it turns off the EPCH unit by weight and the starter relay. Press the button and the ignition turns on without a starter (of course, in this case, relays K1 and K2 can turn on by taking a plus from the EPHH Unit, but the starter will not turn on, since the handbrake is released).

The current consumption of the relay with the ignition on is about 100mA.

Refinement of EPHH (reduction of revolutions):
We disassemble the EPHH and replace the capacitance with 0.2 μF (200nF), then the cutoff speed of the starter will not be 1600, but already in the region of 900-1000.
So that the relay does not crack at the start, you need to solder a capacitor of any capacity (0.15 μF, 0.47 μF) in parallel with the power supply of the EPHH (preferably in the block). Thus, this capacitor will provide stability in the operation of the EPHH unit.

Disadvantage of the scheme with EPHC: there are EPHHs that cannot be modified (there are no capacitors inside), also in this circuit, to start the motor, the button must be pressed and held for 1-1.5 seconds (so that all relays have time to turn on).

Video of starting the engine with a button (using ZPTF and EPHH)
Delayed relay
Those who want to modify their circuit and add a delay to it between turning on the ignition and starting the starter can use a relay with a delay (the delay time can be changed with the R parameters)

The scheme of starting the engine from the button on the microcontroller

The easiest and most competent way to start the engine from a button on the microcontroller, but since the circuit needs to be stitched, then you cannot do without an electronics engineer.
Assemble the board (size about 3x4cm) and flash it. Then you install, for example, in a free compartment on-board computer STATE.
The connection can be made via the RJ-45 connector.

At the input, a "+" signal is given (in the diagram - Brake and Oil), but it is better to connect to the charging indicator, because the pressure light may go out even before the engine is fully started.
Input Brake is a condition under which the starter is engaged. Those. simply pressing the button turns on the ignition, and pressing the button together with the brake pedal starts the engine.

Output 2 signals (starter and ignition). The circuit does not need to be connected directly to the starter and ignition terminals, but it is necessary to bump into the wiring through 4-contact relays.

Current consumption:

idle - 10mA
when the ignition is on - 50mA
when the starter is turned on - 80mA

Scheme Algorithm:

Touch the sensor on the button - the ignition is turned on.
We touched the sensor on the button when the brake pedal is pressed for more than 3 seconds, then the ignition is turned on and after 4 seconds the starter starts
If the engine does not start and there is no signal at the "Oil" input, then the ignition is turned off.
To start in winter, simply hold the sensor to scroll the motor, the scrolling time is limited by the holding time of the sensor, again, if the engine does not start after the sensor is released, the ignition will turn off.

The button is an ordinary textolite, the surface of which is processed with solder through a stencil.

At the expense of LEDs. they are connected like this

Video of the Start Engine button built on the microcontroller:

Download controller firmware.

Protected engine start button

In order not to simplify the work of the hijackers after installing the Start Engine button, you can carry out a number of actions that will make it difficult to steal a car (although who needs an old TAZ in our time, and who needs to be carried away in their arms :))

You can start with the most primitive anti-theft protection - secrets. The connectors and relays that are responsible for starting the engine can be deeply hidden in the dashboard. The wires must be chosen in the same color as the standard wiring and they must also be routed along with them, etc.

Who wants to get confused, can install a combination lock for ignition with a keyboard and change the code :)
Or, instead of the ignition key, make access to the start through the Controller (for example, TMK-1990A-M100).
You can make it so that the Start / Stop button will only work when a security key is inserted (like a USB token).

All for an amateur, so choose yourself what suits you best.

Video: Protective key for starting the engine with a button

Installing the universal engine start button

How you could assemble and connect a circuit for starting the engine from a button is not an easy matter, especially when you want everything to be like that of foreign cars.
Therefore, the market offers ready-made options for buttons to start the engine.- a set of start / stop buttons of the engine together with a protection unit.
These kits are universal and the difference will be only in some connection nuances.
To explain more clearly, you can compare this kit with an alarm kit.

An example of installation on a VAZ 2114 (the ignition locks are the same as for the VAZ 2110):

This set cost the author 10 thousand rubles. together with delivery.

Features of universal kits:

Turns the starter until it starts (no more than 5 seconds - programmable)
The immobilizer works perfectly with such a system (an immobilizer bypass block is supplied, if desired)
There will be no steering lock.
You can turn on the ignition separately and the starter separately, depending on your needs (for example, via a pedal). You can start the car with one touch without unnecessary movements, or you can also (but in two touches) just turn on the ignition.
You do not need to flash anything. The button has a control unit, which is responsible for such things.

Price of universal engine start buttons different, depending on the manufacturer and functionality (approximately, from 2-8 thousand rubles)
Buy Start Engine Button can be in

In the top trim levels of modern cars, instead of the traditional ignition lock, you can increasingly see a large round Start Engine button. To start and stop the engine of such a car, you do not need a key - just press the button once.

Until recently, this option was considered expensive and was used only on sports cars.

Today, any car owner can buy a Start / Stop button and install it on his car on his own, the issue price is 2000-4000 rubles.

For this amount today you can buy full set Start Engine, which includes:

the Start-Stop button itself;
button fastening;
2 magnetic key fobs with immobilizer code;
immobilizer scanner;
Control block;
assembly wires and connectors.

This system is suitable for cars of any brands, it is compatible with any alarms and standard immobilizers.

Start Engine button can be installed on gasoline and diesel cars of any year of manufacture, including carburetor ones.

Preparing to install the Start / Stop button with your own hands

When buying a Start Engine system, you should pay attention to its completeness. Today Chinese Start / Stop button Instead of an ignition lock on Aliexpress, you can find it for 1000 rubles, but often for this money the buyer receives a kit without an immobilizer and has to be purchased separately.

Plus the instructions that put Chinese manufacturers, leave much to be desired.

In this case, it is better to opt for the kit. Russian production, which, if necessary, can always be returned or exchanged under warranty.

To install the Start / Stop button, you must have at hand:

installation kit;
small flathead screwdriver;
Phillips screwdriver
crimper for crimping car terminals;
pliers;
a sharp knife for stripping wires;
installation diagram.

This is how the scheme for installing the Start / Stop button on a VAZ looks like:

Instructions on how to connect the Start / Stop button using the example of a VAZ 2110

Each Start Engine Kit comes with detailed instructions on installation. Have different manufacturers it may vary slightly, but the basic installation principle is the same.

For example, on a VAZ car of the tenth family, the Start / Stop button with engine start is connected as follows:

Remove the steering column protective cover by unscrewing the three mounting screws with a Phillips screwdriver;
Find the ignition lock connector;
We take out 3 wires from the ignition connector: pink (constant power supply 12+ from the battery), red wire (goes to the starter) and blue with a dark stripe (power dashboard). To get the wires out of the connector, you need to bend the clips with a small screwdriver;
We crimp the wires with terminals. In accordance with the instructions, it is necessary to connect the white wire (ON1 mode), red (12+), black (ground) and yellow (goes to the starter);
We make the connection in accordance with the connection diagram. We start the green wire on the brake pedal button (this is necessary to block the accidental start of the engine);
Checking the operation of the button. To do this, you need to bring the magnetic key to the immobilizer, press the brake pedal to the button;
Next, you need to bypass the steering lock. To do this, you need to saw off the head of the key, insert the rod into the ignition lock and turn it with pliers. Since the blocking is mechanical, you can bypass it like this in a simple way... It is not recommended to cut a single key, for these purposes it is better to make a duplicate;
We install the Start Engine button in the place of the ignition lock or cut it into any convenient place on the dashboard.

VIDEO INSTRUCTION

In the process of installing the button on the regular place of the ignition lock (especially in the case of Chinese devices), some difficulties may arise.

The fact is that the diameter of the hole for the ignition switch may not correspond to the diameter of the button. In this case, you can close the lock with a plug and install the button on the panel.

In many car models latest issues, in order to start the engine, a button is used instead of the usual key. How much better and more convenient it is - everyone determines in accordance with their preferences. The appearance of such a novelty made many drivers want to install an engine start from a button on their old cars. Therefore, it will be quite appropriate to consider how the ignition and engine start system can be redone in accordance with new trends.

Why is this needed?

The reasons can be very diverse:

changed (simplified) process of starting the motor;
reducing the number of items in pockets;
desire to stand out and many others.

It is best to try to figure out why such a desire arises, leave it aside and understand how to install a button to start the engine (in the following text, it can be referred to as Start-Stop Engine or SSE for short).

Engine start system with a button, options for its implementation

It should be noted right away that there are a lot of options for connecting a button. This is due to the fact that such a system can be built taking into account a variety of initial conditions. As an example, below are some options for how to install such an element, possible algorithms for the Start-Stop Engine and the components used in this case. Which of them to choose is up to you. If the level of knowledge of electronics and circuits is large enough, you can make your own on the basis of any of the options, you just need to understand the principle.

How the ignition key can be used:

the key is inserted into the lock, set to position I, and then, after pressing the button, the engine starts (the key allows you to remove the steering wheel lock, which is available on many cars of the VAZ family);
the key is not used at all, got into the car - pressed Start-Stop Engine, and the engine started.
What buttons can be used, their installation, wiring diagram:
without fixing, in this case it must be pressed and held until the motor starts;
with fixation, pressed and released, the start of stable operation of the motor will be determined by the electronics and will turn off the starter.

How the ignition system works:

its start is performed separately from starting the engine (when you press Start-Stop Engine - the ignition is turned on, then you press the brake or clutch again - the engine starts);
the ignition starts to work simultaneously with the start of the engine;
various interlocks of the Start-Stop Engine and ignition are performed including (the interlocking circuit may provide for the use of a signal from burglar alarm, sensor open doors, inclusion of dimensions, etc.).

These are just a few of possible options and algorithms that allow you to start the engine without a key in the car lock.

How to make this launch possible

For example, several options for implementing such an idea are considered below. It is worth considering that when starting such an upgrade, you need to understand and understand what and how to do, because you perform all the manipulations at your own peril and risk. In the event that in the process of work there are doubts about the correctness of the actions, you should seek advice from a specialist (auto electrician).

The scheme of starting the engine with a button using a key

There are a significant number of different options for implementing this approach. For example, the diagram below.

And below is the diagram for connecting the relay to the ignition switch

Everything works very simply. The key is inserted into the lock and turned. Then the button is pressed and held until the motor starts. To turn off the entire system, simply turn the key to its original position. With this option, all functions of the ignition lock and immobilizer are retained.

Such a scheme is quite simple and primitive; it can be performed by any car enthusiast. There are much more complex implementation options, but their implementation will require the use of additional elements, and this can be done by a person trained in the field of electronics.

Installing the engine start button without the ignition key

This is a more complex option that allows you to start the motor using a button; with this approach, for example, RZPTF (rear relay fog lights). Its inclusion is shown in the diagram shown in the figure:

An added benefit is connecting the power supply to the alarm. In this case, the operation algorithm will be as follows:

the car is removed from the alarm, power is supplied to contact 1 of the RZPTF, the backlight comes on;
the button is pressed and held - the ignition and starter relays are turned on, the starter starts to spin;
the button is held until the engine starts, then it is released, the starter relay turns off, the motor continues to work;
pressing it again stops the engine;
after installing the car on the alarm, the backlight goes out.

This is one of possible ways implementation of a similar launch system. In the process of such a start-up, other elements can also be used. For example, the engine will start when the clutch or brake is pressed, everything will be determined by the given starting algorithm.

Implementation of the idea to start the engine using a button instead of a key is possible on any car. In this case, a completely arbitrary one can be used, only your algorithm of action. The decision on how the engine will start - with a button or with an ignition key - is a matter of personal choice, and the skill of the person who will undertake the refinement of the ignition system.

Each person seeks to make his life easier. And the car enthusiast in this sense is no exception. He constantly tries to save himself from performing all sorts of routine operations, such as turning the ignition key, for example. In order not to fiddle with the keys every time, motorists install start / stop buttons in their cars. But is it really that safe? And if so, how to install such a device on the ignition lock? Is it possible to do it with your own hands, and most importantly, with minimal costs?

How the start / stop button works

The start / stop device operates according to the simplest principle: first, the car alarm is turned off, then the driver squeezes the brake pedal, then presses the button.

The starter motor works for one to two seconds, after which the car starts. If the engine needs to be turned off, the driver again squeezes out the brakes to failure and clicks the button.

Advantages and disadvantages of the device

First, let's list the advantages of the start / stop mechanism:

But there were also some drawbacks:

to start the engine, the driver must be sure to sit in the car and apply the brakes. It can be difficult to get used to this feature of starting the motor, especially for novice car enthusiasts;
if the driver decides to put an alarm with an autostart function on a car with a button (for warming up the car in winter, for example), then problems may arise with this, which, fortunately, can be solved. The driver will simply need to have a couple of key fobs with him. One of them will have to be given to the alarm installers so that they disassemble it, take out the microcircuit and put it in the car. After that, the current will be supplied only at the moment of starting the engine. But for all this, the car owner will have to pay extra seriously to the masters;
if a button is already installed on the car, but there is no alarm yet, then its installation will cost the driver more, sometimes twice.

About the options for installing the start / stop button

Now there are a lot of different schemes for connecting the "start / stop" mechanism, each with its own characteristics. Let's list the most popular options:

scheme involving the use of an ignition key. When using this option, it is impossible to start the car without a key: the driver first turns the key and only then presses the button;
modification without ignition key. The engine is started by simply pressing a button. This is very convenient, but if the device is installed incorrectly, the machine can become an easy prey for intruders;
circuit with a short press of a button. The driver presses the button for only 1-2 seconds, the starter makes several revolutions and turns off immediately after starting the engine;
options with a long press of a button. In this case, the owner can hold the button as long as he wants, and the starter will rotate until the engine starts;
a scheme providing for turning on the ignition only after pressing a key;
modification in which the ignition is switched on 1 second earlier than the starter.

In addition, combinations of several of the above options are possible: it all depends on what exactly the car owner wants to achieve. However, the installation of such combined circuits requires some knowledge of automotive electrical equipment.

How to install a mechanism in a car

Before proceeding with the installation of the "start / stop" button, it is necessary to carry out a certain preparatory work, which will depend on the car model. The ignition lock is removed from the car. And if the design of the machine does not allow this, then a small hole is made on the torpedo, next to the lock. To cut through it, any tool at hand is suitable: a knife or an ordinary household soldering iron. This hole will give access to the wiring (you can later make a plug for it).

Consumables and tools

To install the device you will need:

The simplest diagram of connecting the start / stop button with your own hands

Device installation procedure:

The operation of the device boils down to creating 3 points for connection in the car: one should be in the ignition block, the second on the brake pedal limit switch, and the third on the control wire.

How to properly connect a start / stop device to a car

In other schemes, the above principle remains: there is a button with colored wires that are difficult to confuse. If a problem can arise, then the wires are yellow, since there are three of them on some models of buttons. Here you need to remember the following: the thin yellow wire located on the harness controls the brakes. The two remaining wires go to the ignition.

Another car enthusiast may encounter a purple wire. These wires usually start the engine. The red wire goes to the negative terminal of the battery, the black wire to the positive. On the diagram, all this may look like this:

The talk about the color of the wires did not come by accident. Most motorists prefer not to bother with connecting the wiring to the button, but immediately buy a ready-made kit: a start / stop mechanism with all the necessary wires and circuitry. Insulation colors in kits from different manufacturers almost always have the same meaning, so confusion is almost impossible.

The sequence of operations when installing "start / stop" on the ignition switch

To properly integrate the device into the system, the following sequence of actions must be followed:

First, the cylinder of the ignition lock is removed, followed by the lock itself.
The wires in the lock are cut neatly.
The wiring going to the ignition unit is insulated with electrical tape, after which the button from the kit is connected to them in accordance with the previously selected scheme.
After connection, the key is mounted on the dashboard or in any other place convenient for the driver.

Video: install the start / stop button to start the engine

How does a button affect anti-theft protection?

In most cases, the presence of the device does not affect the safety of the car in any way. Because overwhelmingly modern schemes one way or another, the use of the key in the key fob of the car is provided. That is, if an intruder opens the door without the help of the "native" key, the "start / stop" button simply will not start the engine.

Problems can arise when a key fob is excluded from the circuit. This usually happens when amateurs are involved in installing the mechanism. The solution is simple: entrust the installation of the button to professionals.

So what does the start / stop button do? Firstly, comfort, and secondly, saving time. The last point is especially relevant in modern world where people are constantly in a hurry somewhere. To install a button by the simplest scheme no serious knowledge of electrical engineering is required. All a beginner needs is to carefully study the diagram attached to each kit, and not to confuse the colors of the wires.

For the convenience of starting the engine, the car is equipped with a start-stop system. There are different installation options, the choice of which depends on the preferences of the car owner. At minimum set parts and tools, you can do the installation of the button instead of the ignition lock with your own hands.

How the start-stop button works

Today, the start-stop system is installed on many modern cars... The essence of its work is as follows: after removing the car from the alarm and getting the driver into place, the brake pedal and the keyless start button are pressed. After about half a second, the starter motor will start the engine. Often the button is equipped with LEDs, the indication of which informs about the successful start of the motor. To stop the engine, just press the brake pedal and the button. Let's take a closer look at how this system works.

At the moment of pressing the pedal, the control unit receives a signal from the crankshaft rotation sensors. This signal contains information about the number of revolutions crankshaft... After processing it, the module sends a signal to the devices that are responsible for controlling the car's engine, while it stops. When equipping the car mechanical transmission, after the clutch pedal is depressed, the corresponding information will be sent to the control module. Further, it is converted into a command for starting the starter. On machines with automatic transmission simply release the brake pedal to start the engine. If the sensors detect a low battery charge, the system will be automatically turned off by the control unit and will remain in this state until the battery is restored to the appropriate value.

For the convenience of starting the engine, the car is equipped with a keyless engine start system using a button

Advantages and disadvantages of the engine starting system

The system in question is not new. At the same time, various design improvements did not eliminate its main disadvantages. Based on this, many car owners are of the opinion that "start-stop" has more disadvantages than advantages and do not see much sense in installing it. Nevertheless, it is worth considering the positive and negative aspects of this system.

Pluses of "start-stop":

With continuous use of the car in the city, fuel consumption is reduced.
Reduced emissions of exhaust gases into the air, as they contain harmful chemical compounds.
When idle in city traffic jams, there is silence and comfort in the cabin, since the engine is turned off at this time.
Engine parts are subject to less stress. This is due to the fact that power unit does not work at the time of downtime, and the drive structure of the mechanism reduces the load on crankshaft, as well as on the main elements of the engine.
The system is started at the touch of a button, and you can choose the most convenient installation location.

It is worth mentioning the cons:

Critical vehicle components such as the battery and starter are constantly exposed to high loads as the engine is started more often. A more severe operating mode leads to their premature failure.
Prolonged operation of the system in city mode leads to driver fatigue, but at the same time it is possible to turn it off.

To start the engine, you need to get into the car and press the brake pedal, which is not very convenient at first.

Installing a protection device on a car with keyless start will cost more.

Do-it-yourself system installation options

There are several ways to install the start-stop system, each with its own characteristics:

Keyed mounting option. This method requires a key to start. Turning it turns on the ignition, and to start the engine, you need to press a button. There is also an option without a key, for which only the button is pressed.

Time to press the button: short and long. In the first case, the button is pressed briefly, while the starter will rotate until the engine starts. The second option involves pressing a button, and the starter will rotate as long as it is pressed.

Different ways to turn on the ignition. One of the options - the ignition turns on when you press the button, the second - it is activated together with the starter.

Sufficient experience will allow you to perform a combination of different options, resulting in interesting schematic solutions. To install a "start-stop" with your own hands, you do not need any special knowledge of the operation of the car. If the goal is to implement a complex circuit with a start delay or with a timer, then in addition to additional components, in-depth knowledge in this area is required.

There are different options for installing the start-stop system, which depends on both the device itself and the wishes of the car owner.

How to choose the right button to install instead of the ignition switch

As you could understand, the button of the launcher works when it is pressed for a certain time. During this interval, the starter rotates the crankshaft and the engine starts, after which the button is released. When choosing a part, you need to take into account a number of features. First of all, attention should be paid to the fixation of the button. It is best when, when pressed, the contacts close, and when released, they open. If you put a latching button, then in order to open the contacts after starting the engine, you will need to quickly press it again, which is not very convenient.

If we talk about the button itself, then today there are many different solutions. The part can be selected, either for price reasons, quality or other characteristics. In addition to the fact that the button can be highlighted, the material of manufacture can also be different (plastic or metal). Since the device is designed for continuous operation and a large current will flow through it, these indicators should be taken into account when choosing. Taking into account such features of operation, it is advisable to give preference to buttons that are covered with high-quality materials. Such a detail will remain attractive for a long time. appearance and characterized by abrasion resistance. In addition, you should not choose cheap options, as they will burn out quickly enough.

When installing the system, it is important to choose a high-quality button so that the part is resistant to abrasion and can withstand heavy loads.

How to install a button yourself

Regardless of which method was chosen, the installation begins with choosing a place for the button. Various options are possible, but basically the part is installed in the ignition switch or a hole in the torpedo is prepared. This can be done with a knife, a drill or a soldering iron. To provide access to the wires, you will need to disassemble the console. If the installation of the button is planned in a different place, i.e. not in the ignition, then it will need to be hidden with a plug.

As an example, consider the installation of a button on a VAZ 21214. The operation of the system under consideration will be carried out as follows: if the brake pedal and the button are pressed at the same time, the engine starts, when pressed again, it turns off. If the button is pressed without a pedal, the engine will start and stop. When pressed with the motor running, a stop occurs.

Tools and materials

To install the system, you will need the following list of elements:

momentary button;
3 standard 4-pole relays;
one five-contact relay with closed contacts;
5-pin rear fog lamp relay;
wires;
terminals;
pliers for crimping terminals.

Small pliers can be used instead of pliers, but the crimp quality will be lower.

To install the start-stop button, you will need relays, terminals and wires, the length of which is determined locally

Connection diagram

Let's consider the scheme according to which the system will be connected:

the working contact of the relay is connected to + 12V battery (brown wire);
the enabling signal “+” is connected to the same point;
common is connected to body ground (contact must be reliable);
the relay contact, rated for the load, is connected to + 12V when the ignition is turned on (blue wire);
the control signal “-” is connected to the start button;
the enable signal “+” remains inactive.

As a result, we get three connection points:

to the contacts of the ignition switch;
to the limit switch (toad) of the brake pedal;
to the control wire.

This option excludes the operation of the starter after starting the engine. If we consider the installation of the system on other cars, then the principle is approximately the same. Since the wires can be painted in different colors, you should be guided by color shades. One of the points that can raise questions is the orange wire, since there are several of them. A thin wire located in the bundle goes to the brake pedal, and the paired ones are connected to “+”, they are responsible for the ignition. The harness has a purple wire that goes to the gas pump and is responsible for starting the engine. Red is connected with "-", black with "+" of the battery. The wire of blue color are used to connect the alarm and connect to “+”. The purpose of the yellow wire is to connect the button to the starter.

The layout of the start-stop button will not cause any particular difficulties during installation, since minimal knowledge and simple tools are required

Sequential installation of the universal kit

Since we are talking about installing the system with your own hands, you need to clearly understand what and how it works and in what sequence to connect. So, if we consider old cars, then in them the wires from the starter were connected directly to the ignition switch. Naturally, a large load was imposed on the contacts when starting the engine, since a large current flowed through them. As a result, the contacts quickly failed. Later, the starter was equipped with a separate relay, which eliminated the described problem. It was the relay that took all the current on itself. This part, in addition to being able to handle a heavy load, is relatively easy to replace in the event of failure. Such changes ensure the long-term operation of the contact group.

Systems keyless entry offered as universal as well as for specific brands car

To connect the button correctly, you need to find out which contacts on the lock are responsible for supplying power to the starter, which will ensure that the engine starts and stops (when the contacts are closed and opened). Depending on the wiring diagram, the contacts are connected to the button, and there is no need to use a key in the lock. We install the system in the following sequence:

First of all, decorative and protective elements are removed from the steering column, which will provide free access to the wiring. We are interested in the connector located with back side ignition lock. It will need to be snapped off, it is held with the help of special latches. If the car does not have a starter relay, then you will need to find it in contact group lock power wires. They usually have the largest cross-section. At the moment the ignition is turned on, when the contacts are closed (to which the thick wires go), the starter should start. This will indicate the right choice contacts.
Now you need to connect the button itself. After the installation location is selected, it is necessary to connect the power wires from the ignition switch to the button. On cars where a starter relay is used, wires are connected to the button that supply power to the relay. In order not to get confused and determine accurately, you can ring the wires with a multimeter in ohmmeter mode. The device checks the wires from the starter to ground and is determined with "-".
After that, the tester is moved to the voltage measurement position and the readings on the remaining wires are measured. The pursued goal is to find a wire on which + 12V appears when the key is turned in the lock, i.e. ignition voltage. In addition, contact with constant voltage+12 V. You also need to make sure that the voltage remains when you turn the key.

To complete the diagnosis, a piece of wire is used, which is connected to the contact, where voltage appears when the key is turned to the ignition position. Then they connect this contact with another wire with the one on which the voltage is constantly present. If you short-circuit these wires and the starter starts spinning, then the required leads have been found correctly. All that remains is to lay the wires to the installation site of the button and connect it.

Video: an example of installing a start-stop button on a Chery M11

How does start-stop affect car theft protection?

Most drivers are of the opinion that starting the engine with a button makes the car more vulnerable to theft. But if you look at it, then the presence of a key in the key fob is mandatory. If the door was opened without a key, then the button simply will not work, which in no way affects the protection against theft. The considered system is interesting and unusual option key replacement. With regard to the installation, there is no single answer - each car owner decides for himself what he wants to implement in his car. If you want to try something new, then why not. As a last resort, if you don't like something, everything can be returned to its place.

Anyone can equip their car with a start-stop system if they wish. For this, a minimum knowledge of electrical engineering and operation will be sufficient. Adhering to the installation recommendations, the installation of the device will not take much time and effort.