How to connect the start stop button

On expensive trim levels of good cars, subject to all safety measures, an engine start button is often installed. There are many reasons for this. The same as against installing such a button. But the fact that such an alteration in a car, especially not too expensive and sophisticated, such as our Lada, Samara, Grant and other Priors, will be a bright addition to the stylistic solution of the interior, is unambiguous. We will decide later whether we will install the button or not, but it won’t hurt to find out how to install it correctly.

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The operating principle of such an auxiliary device is quite simple:

get into the car;
depress the brake pedal;
press the “Start/Stop” button and the engine starts;
To turn off the engine, press the brake pedal again and press the button - the engine stalls.

For information! If you simply press the button without pressing the brake pedal, the engine will not start, since the +12V voltage is supplied only to additional consumers (for example, an audio complex). This is similar to turning the ignition key to the first position - ACC.

What are the pros and cons of installing it in a car?

What are the benefits of using a button?

A light press is enough to start the engine.
You no longer need to carry the ignition key with you.
The button can be installed anywhere, including right at hand, which increases ease of use.
A number of options are combined with car alarms, immobilizers and other security systems.
You can lock the car by simply pressing a button on the door, without having to set it to the alarm - this saves time if you leave the car for a short time.

If you do not have basic electrical skills, it is better to seek services from a service station

Are there any disadvantages? Alas, yes.

To start the car, you need to sit in it and press the brake pedal. Out of habit, many drivers forget about this.
There may be difficulties when installing an alarm with heating. So, you will need at least two keychains - one of them must be given to the masters. They will disassemble it, take out the chip and install it in the car. Power will only be supplied at startup.
Installing an alarm on a car with a button usually costs more.

Standard delivery set

The delivery set of the universal device for equipping a vehicle with an engine start/stop button consists of:

control module;
the “Start/Stop” button itself;
built-in immobilizer scanner;
2 keychains;
installation wires;
instruction manuals (with connection diagram).

This kit is designed for installation on almost all models of both domestic and imported cars. The current price (depending on the manufacturer) is 1500÷4500 rubles.

For information! To deactivate the immobilizer, simply bring the key fob close to the scanner at a distance of 2÷5 cm. After this, a sound signal will sound, informing you that the device is ready for operation. 15÷20 seconds after stopping the engine, the control module automatically switches the device into security mode.

Assembly and installation of an engine starting system with a button

The first stage is preparing the place for mounting the Start-Stop Engine button. Some car enthusiasts prefer installing a mechanism instead of a standard ignition switch, others mount the part on the front panel or on the other side of the steering column. If you intend to leave the ignition switch in its original place, we recommend that you disguise it with a suitable cap. Do not forget that the button usually has LED backlighting, so it is better to mount it so that it does not blind you in the dark.

Steering wheel unlock options

When we remove the key from the lock, the steering wheel is locked, that is, fixed with a spring-loaded metal pin. In order to operate the car normally after installing the “Start/Stop” button, it is necessary to remove this function. There are two ways to do this.

The first, and from our point of view, the most preferable method:

order a duplicate ignition key;
insert it into the lock and make a mark at a level of 1÷1.5 mm above the surface level;
take out the key and saw off the “excess” in accordance with the mark;
insert the “piece” into the lock and use pliers to turn it to position 2 (now the steering wheel is unlocked);

We leave a piece of the key in the lock until the need arises to return to the standard ignition circuit.

The second way to get rid of the steering wheel lock is to completely remove the ignition switch. In the resulting hole we either mount the “Start/Stop” button or install a plastic plug of a suitable size. The main disadvantage of this method is that it will no longer be possible to quickly “return” to the standard circuit of turning the car engine on/off using a key.

Will installing a “Start Stop” button instead of the ignition switch protect your car from theft?

Some drivers believe that installing a Start/Stop button makes the car vulnerable to car theft. This is not true: you can install it, and it is safe. Almost all modern cars have contactless key fobs. If we assume that the attacker somehow opened the car door, but he did not use the “original” key, the button will not allow the engine to start. This most likely will not help protect your car from professional car thieves, because they use repeaters to intercept the radio signal from the car's control panel. One of these devices is called “Volna”, it can be bought on the Internet.

But you can protect yourself from theft. You should not store the key fob near windows and entrance doors so that criminals do not have the opportunity to intercept the outgoing signal. Try to keep it in a thick-walled box or Faraday bag. Can be wrapped in foil.

The presence of a Start / Stop key is, first of all, comfort and reduces the time spent on starting the engine. This is very important, because we are constantly in a hurry. To install a button using a simple diagram, you do not need deep knowledge of electrical engineering. The most important thing here is not to mix up the wires. If there is a button, the process of starting the engine becomes comfortable. There is no need to insert the key into the lock (which is very inconvenient to do in the dark). Also, the lock itself sometimes jams.

The button is especially convenient to start the engine when in a hurry. Beginners who have not yet developed the skills of “blind” control begin to get nervous and perform unnecessary actions. This can lead to the car not moving when the traffic light turns green.

How to bypass the standard immobilizer

Many modern car models are equipped with an anti-theft device such as an immobilizer. Manufacturers equip the vehicle with a similar standard device already at the factory. The reading device is usually installed in the ignition switch, and the control mark in the key. If the security guard is not dismantled, then a key will be needed to deactivate the security mode. If you decide to remove the lock, then you need to disassemble it, find the immobilizer reader and move it to a suitable location. However, in order to start the engine with the Start/Stop button, you will still have to have the key with you.

For information! Some manufacturers, in addition to the universal “Star/Stop” kits, produce special devices for temporarily disabling (bypassing) the standard immobilizer.

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, simply turn the key to its original position. With this option, all functions of the ignition switch and immobilizer are retained.

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 fog lamp relay). 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 the possible ways to implement such a launch system. During such a launch, other elements can 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. » alt=»»>

DIY option

The Internet is replete with diagrams for making your own ignition control units using the Start/Stop button. For those who like to do car tuning with their own hands, below is one of the fairly simple options that is easy to repeat:

To make this device yourself you will need:

4 relays: PTF 21.3777 (300 rubles), 231.3787 (150 rubles), 90.3747-10 (2 pieces for 75 rubles);
4 diodes (for example, 4007 - 4 rubles per piece);
button without fixation (30÷70 rubles);
installation wires of suitable diameter;
crimp terminal blocks (“female” - for switching relays among themselves, “male” - for connecting the manufactured unit to the ignition switch block).

Advantages and disadvantages

Any car tuning has both pros and cons. Among the advantages of controlling the start/stop of the engine using the “Start/Stop” button, one can note only a slight increase in comfort and minimal time savings. And here are the disadvantages (where would we be without them):

You will still have to carry the key with you. Firstly, it may be needed to simply open the car if the battery is dead and the electromagnetic door activators do not work (this is especially true at significant sub-zero temperatures). Secondly, in many modern cars the standard immobilizer mark is located in the key, so you can start the engine only if it is in close proximity to the reader.
The installation of pre-heating devices and alarm systems becomes more complicated (due to changes in the standard electrical circuit of the car).

Important! Such modernization of the car threatens to void the vehicle manufacturer’s warranty.

I decided to make this post because many are now switching to the Start Stop system.

And so how can you install it yourself on a VAZ 2110,11,12.

First, you need to order it for this, Aliexpress will help us: Link: Start-Stop

When we have the button in our hands, we see instructions for installing it, which are included in the kit.

It tells you how to connect our button.

From our connector to the ignition switch, we need the following pads: 1) +12V to the starter (pin 50); Starter 2) +12V after turning on the ignition (pin 15); Ignition 3) comes +12V from the battery (pin 30); +12 Volt

The ground (minus) to the ignition switch comes from the door limit switch - to illuminate the ignition switch cylinder. So we take the mass (minus) not from the lock, but from any nearby bolt on the car body.

Detailed diagram of the ignition switch: In my BZ

The brake pedal can be connected not to the frog itself. And find the pads in the mounting block.

Mounting block connector Ш4 (pins-16,15) Pin 16- after pressing the brake pedal +12. Contact 15 - outgoing +12 volts to the Brake light lamps after the control relay.

Pads in the Mounting Block VAZ 2110,11,12:

Video of how everything works on the youtube portal:

Order this kit, see this video: Start/Stop

Installing the “Start-Stop” button from Aliexpress

In most cases, it will be most advisable to purchase a ready-made installation kit. Typically it consists of the button itself, a control unit, a reader, key fobs and a set of wires. The cost of this set in the popular Chinese online store Aliexpress is about $25. This is where you usually buy an installation kit for starting the engine with a button.

Button connection diagrams (in Russian and English)

The published schemes have minimal differences, but the principle is the same.

We will consider the procedure for installing the device on a VAZ car (Lada Kalina) while maintaining the possibility of using the standard ignition switch. In this case, only the steering wheel lock is missing. If the push-button mechanism fails, you can turn it off, connect the standard ignition switch connector and start the engine using the key. To maintain this possibility, it is recommended to purchase a block with wires for the ignition switch contact group.

Installation and connection sequence:

Remove the ignition switch by removing the four screws using a screwdriver.
Disassemble and remove the steering lock mechanism.
Disconnect connectors.
Disassemble the contact group housing and remove the immobilizer antenna.
Install the engine start button in the selected location.
Solder the wires according to the diagram, insulating them with heat shrink. Remove unnecessary wires from the block.
Read also: Tire pressure in a GAZelle: what should it be on the wheels of a light truck
Install everything in reverse order.
Connect the green wire to the brake block (contact No. 4, in our situation - red). A “+” should appear on this contact when you press the brake pedal.

Checking the system operation:

Initially the button is inactive;
To unlock, you need to bring the key fob from the kit to the reader (a double signal should sound);
If there is no button press within 15 seconds, automatic blocking will occur (a single signal will sound);
after unlocking, the first press turns on ACC (in our situation it is not used), the second press turns on the ignition, the third turns off the system (if you do not first press the brake pedal);
With the brake pedal pressed, pressing the button a third time will start the engine;
quick start of the engine is possible - you need to press the brake pedal and simply hold the button for 1-3 seconds until the power unit starts;
To stop the engine, press the brake pedal and press the button.

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Comments 8

Please tell me how the standard immobilizer and engine autostart behave after installing this system?

There are no changes in the operation of the immobilizer, since this button is connected to the standard connector of a conventional ignition switch and only performs its function. As for autostart, you need to look at the connection diagram. But since most alarms are connected to the key, the auto start will not see this button. The button simply emits the operation of the key in the ignition switch. But there are a number of disadvantages: the car cannot start from the pusher)) and when the battery is very discharged, the button block takes on a charge and the car does not envy without lighting it.

Installation methods

Nobody significantly limits car owners from installing a button on their car to start the engine with a simple press.

Therefore, more and more often you can meet those who want to install a solution:

for 140 Mercedes;
Niva;
Lada Granta;
Hyundai Solaris;
to Priora;
Honda cars;
Mitsubishi ACX;
Mitsubishi Lancer;
Audi 100 C4;
Toyota Yaris;
Kia Rio;
and even VAZ 2114.

The main thing here is to decide whether you really need this button. If yes, then move on to choosing the system itself.

Modern manufacturers of universal buttons allow you to select a mechanism for any machine. Please note that there are various connection schemes. Each of them has its own characteristics.

But a few of the most popular solutions dominate. These are the options that car owners prefer. Let me introduce you to them:

Button with ignition key. This system will not allow you to start the car without using the ignition key. Therefore, you need to turn the key itself in the lock, and then press the button;
Keyless. To start the motor, you just need to press the button. An extremely convenient scheme. But here it is important to install it correctly, otherwise the car will be extremely easy to steal;
Short press. To start, hold the button for up to 2 seconds. The starter rotates and turns off when the engine is running;
Long press. Allows you to hold a key as long as required. The starter will not stop rotating until the engine starts;
A circuit where the ignition is activated after a key has been pressed;
A scheme in which the ignition is activated 1 second earlier than the car starter.

Also, some combine different schemes to achieve the desired result.

If you do not have experience in such work, and also have poor understanding of automotive electrical equipment, you should not take on such work with your own hands.

Contact good workshops. Moscow alone is ready to offer dozens of addresses of car services that offer similar services. The price will be higher, but the result is guaranteed.