How to make an engine start button. Installing the "Start-Stop" button instead of the ignition switch - detailed instructions. Consumables and tools

To make it easier to start the engine, the car is equipped with a start-stop system. Exist different variants installations, the choice of which depends on the preferences of the car owner. At minimum set parts and tools, you can install the button instead of the ignition switch yourself.

How the start-stop button works

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

When you press 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, and it stops. When equipping the vehicle manual transmission, after the clutch pedal is pressed, the control module will receive the corresponding information. Next, it is converted into a command to start the starter. On machines with automatic transmission To start the engine, simply release the brake pedal. If the sensors detect a low battery charge, the system will automatically turn off by the control unit and will remain in this state until the battery is restored to the appropriate value.

To make it easier to start the engine, the car is equipped with a system keyless start engine 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 shortcomings. Based on this, many car owners are of the opinion that “start-stop” has more disadvantages than advantages and do not see much point in installing it. However, it is worth considering the positive and negative sides this system.

Pros of start-stop:

With constant use of the car in city conditions, fuel consumption decreases.
Emissions of exhaust gases into the air are reduced, since they contain harmful chemical compounds.
When idling in city traffic jams, the cabin is quiet and comfortable, 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 when idle, and the drive design of the mechanism reduces the load on crankshaft, as well as the main elements of the engine.
The system starts at the touch of a button, and you can choose the most convenient installation location.

It is worth mentioning the disadvantages:

Critical elements of the car, such as the battery and starter, are constantly subject to high loads, since the engine is started more often. A more stringent operating mode leads to their premature exit out of service.
Prolonged operation of the system in city mode leads to driver fatigue, but 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 security device on a car with keyless start will cost more.

DIY system installation options

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

Mounting option with a key. This method requires a key to start. When you turn it, the ignition is turned on, and to start the engine you will need to press the button. There is an option without a key, for which you only press a button.

Time to press the button: short and long. In the first case, the button is pressed briefly, and 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 is that the ignition is turned on when you press the button, the second is that it is activated together with the starter.

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

There are different options for installing a start-stop system, which depends both on 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 can understand, the launcher button works when it is pressed for a certain time. During this period, 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 fixing the button. It is best when the contacts close when pressed and open when released. If you install 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, today there are many different solutions offered. The part can be selected based on price, quality or other characteristics. In addition to the fact that the button can be illuminated, the material of manufacture also varies (plastic or metal). Since the device is designed for constant use and will flow through it high current, then these indicators should be taken into account when choosing. Taking into account such operational features, it is advisable to give preference to buttons that are covered with high-quality materials. Such a part will maintain an attractive appearance for a long time and is characterized by resistance to abrasion. 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, installation begins with choosing a location for the button. Various options are possible, but basically the part is installed in the ignition switch or a hole is prepared in the dashboard. 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 button is planned to be installed in a different location, i.e. not into the ignition switch, then it will need to be hidden with a plug.

As an example, let's consider installing a button on a VAZ 21214. The operation of the system in question will be carried out as follows: if the brake pedal and the button are pressed at the same time, the engine starts, and 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, it stops.

Tools and materials

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

non-latching button;
3 standard four-pin relays;
one five-pin relay with closed contacts;
rear fog light relay 5 contacts;
wires;
terminals;
terminal crimping pliers.

Instead of pliers, you can use small pliers, but the quality of crimping the wire 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 diagram according to which the system will be connected:

We connect the working contact of the relay to +12V battery (brown wire);
the enabling signal “+” is connected to the same point;
the common one is connected to the body ground (the contact must be reliable);
the relay contact designed 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 enabling signal “+” remains unused.

As a result, we get three connection points:

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

This option prevents the starter from working after the engine starts. If we consider installing the system on other cars, the principle is approximately the same. Since the wires may be colored different colors, you should navigate by color shades. One of the points that may raise questions is the orange wire, since there are several of them. A thin wire located in the harness goes to the brake pedal, and the pairs are connected to “+”, they are responsible for the ignition. The harness has a purple wire that goes to the fuel pump and is responsible for starting the engine. Red is connected to “-”, black to “+” battery. The wire of blue color used to connect the alarm and connect to “+”. The purpose of the yellow wire is to connect the button to the starter.

The start-stop button circuit will not cause any particular difficulties during installation, since it requires minimal knowledge and simple tools

Sequential installation of a 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 make the connections. So, if we look at old cars, then in them the wires from the starter were connected directly to the ignition switch. Naturally, a large load was placed on the contacts when starting the engine, since current flowed through them large size. 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. This part, in addition to coping with a large load, is relatively easy to replace when it fails. Such changes provide long-term operation contact group.

Systems keyless entry are offered both universal and for specific car brands

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 connection 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, which is located with reverse side ignition switch. It will need to be snapped off; it is held in place using special clamps. If the car does not have a starter relay, then you will need to find the power wires in the contact group of the lock. They usually have the largest cross-section. When the ignition is turned on, when the contacts (to which the thick wires go) are closed, the starter should start. This will indicate making the right choice contacts.
Now you need to connect the button itself. After the installation location has been selected, it is necessary to connect the power wires from the ignition switch to the button. On vehicles that use a starter relay, wires are connected to the button to supply power to the relay. To avoid confusion and accurately determine, you can test the wires with a multimeter in ohmmeter mode. The device checks the wires from the starter for ground and is determined to be “-”.
Then move the tester to the voltage measurement position and take readings on the remaining wires. The goal being pursued is to detect the 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, use a piece of wire that is connected to the contact where voltage appears when the key is turned to the ignition position. Then this contact is connected using another wire to the one on which voltage is constantly present. If these wires are short-circuited and the starter turns, then the necessary terminals have been found correctly. All that remains is to lay the wires to the place where the button is mounted and connect it.

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

How does “start-stop” affect the protection of a car from theft?

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, the presence of a key in the key fob is mandatory. If the door was opened without a key, the button simply will not work, which in no way affects theft protection. The system considered is an interesting and unusual option for replacing a key. Regarding installation, there is no definite 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. IN 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, minimal knowledge in the field of electrical engineering and operation will be sufficient. If you follow the installation recommendations, installing the device will not take much effort and time.

Today, in modern cars there is often a system that allows you to start the car from the Start Engine button. This option allows you to do away with the ignition switch, and starting the engine becomes simpler and more convenient.

In this article we will look at the installation universal kit costing 1,200 rubles, which is suitable for most cars. In a specific example, it will be installed on an OKU, VAZ 1111.

Buy a start stop button (start stop engine)

The button discussed in this example (and shown in the video below) costs 1200 rubles and you can buy it using the link to aliexpress: http://ali.pub/1qcg1t

Kit contents, functions and characteristics

The kit includes:

Control block
Engine start button
radio frequency (RFID) key tag 2 pcs.
electromagnetic ring for reading magnetic key
Connection diagram of the control unit to the vehicle's electrical wiring

The control unit has two levels of protection built into it. Without a key (tag), it is impossible to turn on the ignition. And without pressing the brake pedal, it will not be possible to start the car engine. This is done so that you do not accidentally start the car while it is left in gear.

The button can operate in two modes. When the brake pedal is depressed and pressed briefly, the starter is turned on for a second. This is enough to start a working engine. When pressed for a long time, the starter turns on until you release the button. This is necessary for starting in the cold season.

If, when you have the key, you do not press the brake pedal, then pressing the button turns on the car’s ignition, this is necessary so that you can turn on any electrical equipment of the car.

Also for the forgetful, when the ignition is turned off and the key is left in the ring, the control unit signals this.

Installing the engine start button yourself

The button itself has a convenient fastening, so it can be placed in any place you like, you just need to cut the required hole.

To connect the wires, you need to connect the cable from the control unit to the standard electrical wiring of the car

The OKA Car (1111 and 1113) has an ignition switch from the ninth family (VAZ 2108, 2109, 21099) and the connection of this kit will be similar for all these cars.

According to the diagram included in the kit, you need to connect + 12V and - to the control unit. The wire coming from the unit to the starter must be connected to connector 5 of the chip (red wire). The ACC pin is connected to connector 3, and to turn on the ignition, the pins from the ON1 and ON2 block are connected to the white wire going to the ignition relay and the blue wire, connector 4 in the chip. If the car has a sample ignition switch, without using an ignition relay, then the blue-white wire (to the 6th connector of the chip) must also be connected to terminal ON1 or ON2.

Similarly, the start engine button can be installed on any other car.

This video demonstrates the working algorithm and that's it functionality this kit:

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 new product has caused many drivers to want to install a push-button engine start on their old cars. Therefore, it would be quite appropriate to consider how the ignition and engine starting system can be redesigned in accordance with new trends.

Why is this necessary?

The reasons can be very diverse:
changed (simplified) engine starting process;
reducing the number of items in pockets;

the desire to stand out and many others.

It is best to leave aside attempts to figure out why such a desire arises and understand how to install a button to start the engine (in further text it may be referred to as Start-Stop Engine or abbreviated SSE).

Engine starting system with a button, options for its implementation

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

How the ignition key can be used:
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, connection diagram:
without locking, in this case it must be pressed and held until the engine starts;
with fixation, pressed and released, the beginning of stable operation of the motor will be detected by the electronics and the starter will be turned off.

How the ignition system works:

its start is carried out separately from starting the engine (pressing Start-Stop Engine turns on the ignition, then presses the brake or clutch again and the engine starts);
the ignition starts working simultaneously with the engine starting;
various blocking of the Start-Stop Engine and ignition is carried out (the blocking circuit may involve the use of a signal with burglar alarm, sensor open doors, inclusion of dimensions, etc.).

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

How to make such a launch possible

As an example, several options for implementing such an idea are considered below. It is worth considering that when undertaking such a modernization, you need to understand and understand what and how to do, because you carry out all manipulations at your own peril and risk. If during the work you have doubts about the correctness of the actions, you should seek advice from a specialist (auto electrician).

Scheme of starting an engine from 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 a diagram of connecting the relay to the ignition switch

Everything works extremely 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, just turn the key to initial position. With this option, all functions of the ignition switch 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 a person trained in the field of electronics can do this.

Installing an engine start button without an ignition key

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

An additional advantage will be connecting power to the alarm system. In this case, the operating algorithm will be as follows:

the car is removed from the alarm system, power is supplied to pin 1 of the RZPTF, and the backlight turns on;
the button is pressed and held - the ignition and starter relays are turned on, the starter begins to spin;
the button is held until the engine starts, then it is released, the starter relay is turned off, the engine continues to run;
pressing again stops the engine;
After setting the car to the alarm system, the backlight goes out.

This is one of possible ways implementation similar system launch. During such a launch, other elements can also be used. For example, the engine will start when you press the clutch or brake, everything will be determined by the specified starting algorithm.

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

All people, without exception, dream of making their lives as easy as possible. Motorists are no exception. Who hasn't dreamed of getting rid of the need to start the car with a key? Many people solve this problem by installing a start-stop button. Let's see how to do it yourself and at a minimum cost.

Many users are very attracted to the ceremony of quickly starting the machine. In addition, this process is very pleasant - there will be no excess in your pockets. You still need to take the keys to the car wash, as they will be needed in the winter when the locks freeze. But if you don’t plan to wash it, then there will be fewer keys in your pockets, since you only need a key fob.

What is a start-stop system?

The main idea of this system is not convenience and comfort, but turning off the engine at those moments when it is not needed. For example, this could be a situation with idle time in traffic jams or a long wait at a traffic light. Naturally, the number of engine starts will increase significantly, which leads to the need to purchase a more reliable and reinforced starter, as well as a larger capacity battery.

Sometimes the role of a starter is performed by a generator, which, among other things, makes the start of the power unit as fast and quiet as possible. The button works as follows: first, the driver turns off the alarm, then presses the brake pedal and then presses the start button. Then the starter is turned on for a few seconds and the engine starts. If you need to stop the engine, you need to squeeze the brake again and press the button again.

Advantages

Car keys with this system are only needed to open the car. You no longer need to turn the key in the lock every time. To start the power unit, it is enough to install the gearbox in neutral gear, press the gas pedal, or in the case of an automatic transmission, the brake, and touch the button.

Installation can be done anywhere. This means that the car will become more comfortable. There are different connection schemes - the button can be connected to an alarm or an immobilizer. This is another security measure. When leaving the car for a few minutes, you can simply close the door with the button. There is no need to arm the car here.

Flaws

To start a vehicle equipped with a stop-start system, the driver must remain in the vehicle and hold down the brake pedal. It is quite difficult to get used to this method of starting the engine. This is especially difficult for novice drivers who have just gotten behind the wheel.

If the owner decides to install a security system with auto start on a car equipped with such a button, he may encounter certain problems. All this can be solved. But you will have to pay twice as much for it. If the car has a button, but does not yet have an alarm or other security system, installation and connection of the alarm system will cost twice as much.

Installation diagrams

There are many different schemes for installing the start-stop button. Moreover, each method has its own specific nuances. One of the popular methods is one where, along with a button, a key is also used. It is not possible to start the engine without it. First you need to turn the key in the lock and then touch the button. There is another scheme where keys are not used.

The motor will start with one press of the button. This is as convenient as possible, but if installed incorrectly, the car becomes a tasty morsel for criminals. It will be very easy to steal it.

The short press method is also used. You only need to hold the start button pressed for a couple of seconds. During this time the starter will have time to make required amount rpm, the engine will start and the starter will turn off. There is a similar option where the button needs to be held longer - the driver can hold the button as long as necessary before starting the engine.

Another scheme - pressing a button starts the ignition system. A method is also used when the ignition system is turned on a second before the starter starts. But this method is less popular.

You can combine different options. It all depends on what goals are set. But setting the start-stop button using different combinations may require certain knowledge in the electrical part of the car.

Preparing for installation

Before you begin installation, you need to prepare. This step varies greatly depending on the car model. First, the ignition switch must be removed. If this cannot be done, then next to the lock on the panel make suitable sizes hole. It can be done with any proper tool. This hole will provide access to the wiring. Next, you will need to install a plug in this place.

Let's look at a simple button installation instead of an ignition switch. The engine will start when the brake is pressed.

Materials

To operate, you will need a button itself, a four-contact relay in the amount of three pieces, one relay with five contacts and from fog lights. You will also need insulated wires and terminals.

Elementary connection method

The relay is connected with the positive contact to the battery positive. In addition, the relay enable contact is also switched on to the battery plus. The negative contacts are connected to ground. You need to set 12 V on the load relay using contacts. The negative signal (control) is connected to the start button.

Three points are created in the car. One of them is in the ignition switch block, the second is located on the end of the brake pedal. The third point is on the control wire.

Correctly connecting the device in the car

Whatever connection method is chosen, all these principles must also be observed. The kit includes the button itself and wires various colors. It is quite difficult to confuse something. Most often, many people get confused with the yellow wires - on different models The start-stop system has three yellow wires. The thin cord that is located on the harness is responsible for the brakes. The rest must be connected to the ignition.

You can also see the purple wires. They are often responsible for starting the power unit. The red cord is connected to the negative on the battery, and the black cord to the positive. The colors of the wires when installing the start-stop button are important. Many people, in order not to bother with connecting the wiring to the button, purchase ready-made kits with the necessary wires and circuits. Wire insulation color included various manufacturers almost always has the same meaning.

Step-by-step installation instructions

Installing the start-stop button yourself is carried out in several steps. The first step is to remove the ignition switch along with the lock. The cord from the lock must be carefully cut. All wiring that goes to the ignition unit is wrapped with electrical tape. What is the next step? Afterwards, a button is connected to the required wires according to the diagram (it is included in the kit). Next, the button itself is mounted somewhere on the dashboard.

Button and security

The Engine start-stop system does not particularly affect the safety of the car. Most connection methods involve the use of an electronic key in the key fob. If a thief opens the door with a non-original key, the system will not allow the engine to start.

Problems arise when the key fob is excluded from the scheme. This often happens when the installation was not carried out according to the rules. So it's better to trust installation work and connection to specialists. The cost of installing such a system ranges from five to ten thousand rubles on average. However, if you have knowledge and experience, this operation can be done with your own hands. Installation time is approximately four to five hours.

Conclusion

So, we found out what the start-stop button is. What does it give the driver? First of all, it provides comfort - the car keys are only needed to open the door. Another advantage is saving time. Time is especially important - people are always in a hurry to get somewhere. To obtain these advantages, you can install the button according to the simplest scheme. To do this, you don’t even need to have any serious knowledge in the field of automotive electrics.

In modern cars, you can increasingly find a solution that allows you to start the engine by simply pressing the Start Engine button. The presence of such an option means that there is no need to use the ignition key, and the procedure for starting the engine becomes simpler and more convenient.

Today, a button for starting the engine (starter button) can be installed in almost any car that is not standardly equipped with the ability to start the engine without a key in the ignition switch. Next, we will talk about what pros and cons the car owner receives after installing the engine start button, and also consider the most common schemes and methods for installing the engine start button yourself.

Read in this article

Keyless start button

It is quite obvious that the starter button in a car increases the ease of use of the vehicle. The standard versions require a mandatory combination of such a Push-Start button with the possibility of Key-Less-Go keyless entry. This combination allows the owner to free himself from the need to use the usual ignition key, replacing it with the so-called electronic key.

Without going into details, electronic key is a mark by which the owner is identified by anti-theft and other vehicle systems after approaching vehicle to a certain distance. As for the start button, it will only work if the electronic key is in the car.

In practice it looks like this:

the owner of the electronic key approaches the car;
at a certain distance, car systems identify the owner by exchanging signals with an electronic key tag;
then the owner presses a button on the electronic key or simply approaches the car closely;
after this the door locks are unlocked;
the driver sits in the seat and presses the engine start button;

It turns out that the electronic key is used by the owner only to forcefully open and close the car doors. All other actions of the keyless entry and start system are carried out in automatic mode. Now let's talk about installing the Start-Stop Engine button yourself.

Popular ways to install the starter button

Let's start with the fact that many car owners are attracted by the very possibility of starting and stopping the engine with a button, that is, not using the ignition key in the lock. In parallel with this, additional implementation of a keyless entry system is not expected. It is worth noting that in the case of such an installation scheme, comfort increases, but safety suffers. The fact is that after intruders enter the car, the engine start button is not blocked by anything, since there are no systems that identify the owner.

In view of the above, it is recommended to equip the car additional immobilizer or other solutions that prevent unauthorized engine starting. It should also be noted that self installation Using the engine start button often increases the load on the starter. As a result, the resource of this element may be reduced. Let us add that the non-standard installation of the engine start button with your own hands can be done according to different schemes, taking into account the wishes of the owner, the characteristics of a particular car, etc.

One of the simplest installation options is the starter button, which involves the parallel use of the ignition switch. With this installation scheme, the ignition is turned on using the key in the lock, and the engine itself is then started from the button. Note that this method has more disadvantages than advantages, since the presence of a “start-stop” button still does not provide the required degree of ease of use.
Another type of installation for starting an engine with a button is the ability to start the internal combustion engine with the gas pedal pressed for models with automatic transmission and the clutch pedal for vehicles with manual transmission. This scheme involves turning on the ignition from the Start-Stop button, while the engine is started directly after pressing the gas or clutch pedal.
It is also worth mentioning the method of starting the engine from the starter button, subject to parallel pressing of the brake pedal. The convenience of this solution is questioned by many, especially if the car suddenly stalls in traffic. Let us add that linking the start-stop button with the gas, brake or clutch pedals in various schemes will require installing a separate sensor on the pedal involved.
The installation of an engine start button with a “delay” deserves special attention. This way abnormal installation has the least detrimental effect on the starter. The downside is the complexity of installation, which requires turning to professionals and making a number of changes to various systems auto.

It turns out, available methods installations can be divided into the following:

the engine start button only activates the ignition; the start itself occurs after pressing the brake, gas or clutch pedal;
the start-stop button allows you to both turn on the ignition and start the engine;
full installation of an engine start system from a button in combination with the installation of a keyless entry system into the car;

The last method is the most optimal and most expensive, since together with the “Start Engine” button, the system receives an electronic key and interacts with the door opening limit switches, the module security car alarm etc.

Self-installation of the engine start button

To better understand the issue, it is necessary to briefly consider the standard process of starting the engine on cars that are equipped from the factory with a simple ignition switch. In such cars, the power wires from the starter are connected to the contact group of the ignition switch. After turning the key in the lock, the contacts close. This solution is found on older car models. The fact is that a large current passes through the contacts, which leads to rapid burnout.

For this reason, more modern versions received a separate relay. The task of such a relay is to take on the entire load and close the contacts after turning the key in the ignition switch. Relay ability to handle high load, as well as the ease of replacing this element in the event of its failure, allows us to speak about the reliability of the system. As a result, the service life of the contact group has increased significantly.

To connect the engine start button, it is necessary to determine exactly which contacts are responsible for closing the power to the starter, which allows you to crank the starter and start the engine from the button, as well as stop the power unit by opening the contacts. These contacts are connected to the engine start button or other elements (depending on the installation diagram), allowing you to completely bypass the key in the ignition switch.

Please note that this manual is not an exact diagram for installing the engine start button and is for informational purposes only! If you do not have sufficient experience working with electrical equipment, then it is recommended to completely refrain from such actions. Remember, errors during connection can lead to a short circuit. on-board network vehicle, failure or failure of electrical equipment, fire and other consequences.

The engine start button works in such a way that the driver presses it and holds it for the required time to start. During this period of time, the starter rotates the crankshaft, resulting in starting the internal combustion engine. Then the button can be released.

Note that when choosing a “start-stop” engine start button, a number of certain nuances should be taken into account. One of these points is the issue of fixing this button. The best option is such that after pressing the contacts are closed, and after releasing they open. If the button has a lock, then after starting the engine, you will need to quickly press it again to open the contacts.

As for the button itself, there are many available for free sale. available solutions, which differ in quality, price and other characteristics. These buttons can be backlit and made of plastic or metal.

For these reasons, it is worth considering when choosing:

a strong current will be supplied to the button;
the solution will be constantly used;

Taking into account these operating features, it is better to choose an engine start button with a high-quality external coating (for example, chrome plating). Such a product will have abrasion resistance to maintain acceptable appearance. You also need to understand that cheap offers can burn out after just a few clicks, so this aspect should be given increased attention.