Instructions on how to register a key in a car immobilizer yourself

02/26/2022 2,224 Electrical

Author: Victor

The need to register a key in the immobilizer may arise, for example, if the original chip is damaged or lost. You can carry out the reprogramming procedure yourself using the universal instructions, but it is better to use a manual developed taking into account the make of the car.

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In what cases is a key registration required?

Assigning a new car blocker chip may be required in the following cases:

1. If the key is damaged. Its malfunction may be due to breakage or wear. Due to malfunctions in the chip, problems will arise with reading the codes by the microprocessor unit.
2. It was necessary to make a duplicate for other drivers of the vehicle. During manufacturing, a chip is installed in the key, but it is not synchronized with the tag in the control unit.
3. The control module in the car has been damaged.
4. The ignition system has failed or is not working correctly (we are talking about the main module).

What is the operating principle based on?

To understand possible malfunctions, you need to know the structure of the immobilizer system from the inside. Some system designs allow the engine to start without an electronic device, even if an attacker has entered the cabin, however, the engine will not operate for long. After this, the main systems responsible for fuel supply, ignition and complete shutdown of electricity in the car are blocked.

The kit must always contain at least three elements of this security system:

• The electronic unit . It is responsible for receiving/transmitting signals. If the correct electronic code is received from the key, then all components are unlocked to start the car.
• Relay . There may be several such elements, and they are located in units responsible for supplying fuel to the cylinders or the operability of the electrical system. Electrical relays receive commands from the ECU.
• A key equipped with a built-in block with a microcircuit. Without it, it will not be possible to activate all vehicle systems.

A new car comes with a special device, with the help of which programming/reprogramming is carried out at the initial stage of the electronic unit. You also need to know that each immobilizer has a secret special button , which can be used to temporarily disable the system. Its location is known only to the car owner, and it is used only in case of unexpected problems.

How to register a new key yourself

To register an immobilizer in a car yourself, you need to use a transponder chip. On many cars this element is called a master key.

Before completing the task, it is recommended to fill the gas tank so that it contains at least 10 liters of fuel.

Universal Guide

A universal guide that allows you to register keys on most modern cars:

1. All car doors are closed, after which the ignition is activated using the learning key. After this, you must wait at least ten seconds.
2. The ignition is turned off, and the indicators on the control panel should blink at intervals of 5 seconds. This indicates that the binding procedure is proceeding correctly.
3. When the ignition is activated, within five seconds you need to remove the learning chip and install a new key. This will allow programming the transponder into the memory of the microprocessor module. The beepper of the car should emit three beeps.
4. Then you need to wait about six seconds, after which the car's buzzer should emit a double sound pulse. Then the ignition switch is turned off, and the trained key with the chip is removed from the lock. The next element must be programmed immediately.
5. A new learning key is installed in the switch. The beepper should beep three times, followed by two more beeps six seconds later.
6. The key is removed from the lock, then a new control element is installed, and the power unit starts. A test drive of the car is done.

User Sergei Sobolevsky talked about how to register a key in a car’s immobilizer.

For blockers with one button

For brokers with one button, we register a new transponder as follows:

1. All car door locks are locked with a key.
2. On the control, the primary key is pressed and held. It must be fixed in this state until the diode light bulb stops blinking. If the button is released, the indicator light should light evenly without blinking.
3. The key is clicked again and the light goes out.
4. The driver's door opens, the key is installed in the switch, and the button is pressed again.
5. The ignition is activated. After 10 seconds it must be turned off.
6. After 5 seconds, the communicator will go into working mode. Information about new keys is stored in the memory of the microprocessor unit.

For Mazda cars

For Mazda cars, the programming procedure is as follows:

1. All keys are prepared (there should be none in the ignition switch).
2. All vehicle door locks are locked and the driver's door is opened.
3. The next step must be completed within 24 seconds. The key in the ignition switch is turned three times from the Lock to On position and back. Then you need to have time to close and open the driver's door three times. You should ensure that the locks deactivate and lock. If you do not have time to do this, the binding procedure is repeated again.
4. Then you need to double-click on the Lock or Unlock button on the first key with a chip. At this point, you should look closely at the door locks to make sure they are locked and unlocked.
5. Similar actions are carried out with the second and third keys. When performing a task, you need to make sure that the locks close and open.

If the pairing procedure was completed successfully, the door locks should automatically unlock and lock after programming.

User Savva Dolesov talked about making keys himself, as well as linking them to Mazda cars.

For Nissan cars

For Nissan vehicles, immobilizer key programming will vary depending on the specific model. For example, in Note, for binding you will need a special device - SSB Key Programmer.

The programming procedure for a Nissan Note looks like this:

1. The plug from the device is installed in the OBD2 diagnostic connector (it is located inside the car).
2. The equipment starts up. In it you need to select the item “Nissan Japan - Micra March 00 - Gasoline”.
3. The key is inserted into the ignition switch and the system is activated.
4. On the device, select the “Nats 5 - Prog New Keys” item.
5. A four-digit password is entered, which must be specified in the service manual. If it is missing, the PIN code must be checked with the dealer or looked at the BCM sticker.
6. After specifying the PIN code, all the keys that need to be linked to the microprocessor unit are inserted into the ignition lock. Installation of controls is carried out one by one. Using each key, you must activate and turn off the ignition within five seconds.
7. After completing the binding procedure, the power unit is started.

For Nissan Almera models, the binding procedure looks like this:

1. With two keys for control, the driver gets into the car. One of them is installed in the lock and rotated to activate the ignition.
2. Then you need to quickly turn it off and on six times. The car's turning lights will begin to blink. The key itself should be in the ACC position.
3. At this moment, on the second key, you need to click on the door lock opening button and quickly press the lock button three times. After the last press, all buttons are released simultaneously.
4. The previous step is repeated as long as the first key is in the lock. The ignition is activated and switched off. This completes the binding procedure.

For Ford cars

For Ford cars, the procedure is as follows:

1. For programming, one of the control keys is installed in the ignition switch.
2. This element rotates in the lock and the ignition is activated. This procedure should be performed four times within six seconds.
3. The key is turned to the zero position to turn off the ignition. In confirmation, the beeper emits a sound signal, the purpose of which is to confirm the readiness of the microprocessor module to register the remaining keys. The manipulation must be carried out within ten seconds.
4. A new key is taken and any key is clicked on it. The control unit will emit a beep as confirmation.
5. A similar operation is carried out with the remaining keys. After pairing each of them, the device should beep. There is no need to remove the key itself from the ignition (this also applies to original devices).
6. The ignition is activated, the key is set to the second position.

What to do if the immobilizer has blocked the engine from starting

Unlocking the immobilizer can be done in several ways, much depends on the type of device installed in a particular brand of car.

1. Using an infrared transmitter;
2. Using the central locking button.

Unlock using IR transmitter

The method, if the immobilizer has blocked the engine, is suitable for types of devices in which the central locking and immobilizer are controlled by an IR key, for example, like in Mercedes cars.

In this case, you will need a four-digit code, which is entered during the unlocking process by pressing the on-board computer button (hereinafter referred to as BC) while holding down the gas pedal. The button is located on the windshield wiper switch at the end (not on all cars).

1. Activate the immobilizer and turn on the ignition;
2. A flashing light on the instrument panel will indicate that engine starting is blocked;
3. We remove the blinking of the lamp by squeezing the gas pedal;
4. Find the BC button. Without releasing the gas pedal, press it as many times as the first digit of the code;
5. Take your foot off the pedal and the lamp will start flashing again;
6. We press the pedal again - by pressing the BC button we enter the second digit of the code.
7. Let's release the pedal;
8. We repeat the same steps two more times.

A constant light on the lamp, regardless of whether the gas pedal is depressed or not, will indicate that the immobilizer is unlocked and you can try to start the engine.

If the code was entered incorrectly, the immobilizer will block the engine again. Nothing bad happened, you have two more tries. If they were not successful, then after 15 minutes you can repeat them.

How to unlock using the central locking button

To unlock the immobilizer using the central locking control button, you will need to enter an emergency code.

It is important to understand that the steps listed below can only start the car, but not decode the computer and solenoid valve

Turn on the ignition. The light on the instrument panel will flash slowly. Turn the ignition off and on again. The light will flash faster, other lights will appear and go out after 3 seconds. After pressing and holding the central button on the key fob, the lamp will flash more slowly

Carefully monitor the blinking process, it is important to count the flashes and when their number is equal to the first digit of the code, release the central button on the key fob. Press and hold the button again

We release it as soon as the number of blinks matches the second digit of the code. We repeat this two more times.

That's it, the immobilizer is unlocked and you can start the engine. But when the ignition is on, a lamp flashing every 3 seconds will indicate that the protection is disabled.

The immobilizer will be locked again, after which you will have to enter the code again if:

1. You turn off the ignition for more than 10 seconds.
2. Disconnect the battery.
3. The device will be blocked for 5 minutes if the code is entered 3 times in a row with an error.

Video “Key binding on Skoda, Volkswagen, Audi cars”

The “Avto Blog” channel talked about programming controls in the described car models.

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Discuss the article:

Emergency opening of a car.

If you lose the last key, do not rush to break the locks, doors or windows, this may not bring the expected positive result, but on the contrary, later make it difficult to open the car with a professional tool. You need to call a specialist in emergency car opening, and within 5-30 minutes, you will be able to open the car without damage. -Of course, if you come across a good master with experience and specialized tools. As practice shows, the price of work is often an indicator of the level of work. For a high-quality opening, you need an expensive tool. Next comes key recovery.

Replacing the remote control battery

The remote control is equipped with a CR2032 lithium battery, the initial supply voltage of which is 3 V. If the remote control supply voltage is within normal limits, then each time you press any button on the remote control, the indicator lights up with a short flash. If, when you press any button on the remote control, the indicator lights up with two short flashes or does not light up at all, then you should replace the battery with a new one.

To do this, you need to unscrew the screw from the side of the case opposite the control buttons, separate the halves of the case, remove the board from the case, replace the battery with a new one, observing the polarity; insert the board into the case; snap the housing halves together and tighten the screw.

Purpose:

The remote control is designed for remote control of locking and unlocking of car doors, turning on and off super-locking doors, turning on and off the alarm system, raising the windows, controlling the locking of the tailgate (trunk lid), and also as a coded electronic key for the APS-6 immobilizer

The remote control is mounted on the blade of the ignition switch key type 1118-3704010 and is designed to operate:

• with electrical package control unit 1118-6512010
• with driver's door module 1118-3763080, 2170-3763080-00/10

2) via transponder channel:

• with immobilizer control unit APS-6 2123-3840010-ХХ;
• with immobilizer control unit APS-6.1 1118-3840010-ХХ;
• with electrical package controller-2170-3763040.