How to disable the immobilizer on a Lada Priora car yourself and what to do if the engine does not start

Often, owners of LADA cars lose the red training key or buy a car without it. And there comes a time when one single key with buttons fails and the car stops starting. If you have a red key, everything is solved simply - we buy a new key, swap the blade from the old one and train it using the red key. But if there is no red key, then a problem arises that can be solved in 2 ways: 1- disable the immobilizer completely 2- restore the “red” key.

The client chose the second option. And so in order, we dismantle the ECU, connect it on the table, reprogram it to learn a new red key and put it in place.

We throw out the non-working board from the old key

and glue in the prepared chip of the new red key.

Next, according to the standard procedure, we register a new switch key using a new red key.

As a result, the standard immobilizer was restored and the central locking buttons on the new flip key are fully functional.

If you have problems with the immobilizer on any VAZ car, please contact us. Quick repair, key restoration or immobilizer removal. We always have keys and blades for VAZ cars in stock - we will cut the blade and register a new key in the shortest possible time.

In stock flip keys for VAZ in Audi style

Address:

Orel, Naugorskoe highway 5a (entrance from Polesskaya street).
CALL 8-910-267-11-11
Dmitry + Viber + WhatsApp + Telegram

Ask any questions you are interested in in PM, by phone or in my group, I will help you in any way I can.

The designs of domestic Lada Priora cars are equipped with special standard anti-theft devices. If such devices do not work correctly, owners are forced to look for ways to disable the immobilizer on Priora.

The principle of operation of the immobilizer in Priora

How to activate the immobilizer?

What is an immobilizer for?

How to disable the immobilizer

Comments and Reviews

The principle of operation of the immobilizer in Priora

The anti-theft immobilizer allows you to start the engine only after recognizing the key installed in the ignition switch.

The operating principle of such a device looks like this:

1. There is a special identification chip in the head of the key.
2. The signal from this chip is sensed by a ring antenna made of many turns of thin copper wire.
3. The antenna is located around the ignition switch cylinder.
4. The read signal is transmitted to the control unit, which compares it with the reference one and activates or prohibits starting the engine.
5. The immobilizer unit is connected via the K-Line bus to the fuel pump control unit, engine ECU and ignition system.
6. If the key is not recognized, these systems are blocked. In this case, the crankshaft may be cranked by the starter, and the immobilizer system warning icon will light up on the instrument cluster.

Connecting the central lock

To connect the alarm system to the Priora central locking system, a cord is used that goes to the control controller. The cable is covered with brown insulation. With a direct switching scheme, all door locks are locked simultaneously, but when the security is disarmed, only the driver's door will open. If the car owner wants to open other doors based on a signal from the remote control, then a 2-stage shutdown scheme is implemented.

The car owner connects an additional relay to the circuit, which operates in parallel with the contact units for blocking the power windows of the doors. If you do not install a window drive relay, then when a signal is sent to the central locking system, the motors will briefly operate (to lower or raise the windows). This occurs due to the design features of the electrical wiring harnesses and electrical components installed in the doors of Priora vehicles. Some cars use 1 relay (in the absence of rear electrical mechanisms).

How to activate the immobilizer?

Before starting use, it is recommended to activate the immobilizer.

In order to do this, you must follow these instructions:

1. Take both standard keys, get behind the wheel and close the door behind you.
2. Insert the key with the red mark (training) into the lock and turn on the ignition.
3. After six seconds, turn off the ignition system. The indicator lamp in the instrument cluster will flash approximately 5 times per second, which is a sign of a normal learning process. If this does not happen, there may be problems with the immobilizer system or faulty components.
4. While the warning light is flashing, you must remove the red key, insert a regular key into the lock and activate the ignition. This procedure should be completed within six seconds. The buzzer will confirm that the training has been completed correctly with three short beeps.
5. Wait another six seconds, after which the buzzer should sound two additional signals. If this does not happen and the warning light stops flashing rapidly, then the learning process has failed and should be started again. If re-learning is also unsuccessful, then you should look for a malfunction in the system or key, which could have been previously trained for a different immobilizer.
6. If training is successful, turn off the ignition. If it is necessary to train additional keys, then such actions are performed with each one.
7. If you do not need to register additional keys, then immediately after the sound signals you must turn off the ignition and remove the regular key and replace it with a red one.
8. Turn on the ignition and receive confirmation in the form of three beeps with the buzzer.
9. In six seconds, two more signals should pass. After this, you can turn off the ignition, but do not remove the key from the lock.
10. Six seconds after turning off the ignition circuits, the buzzer should sound once and the flashing frequency of the lamp should increase.
11. After this, turn on the ignition (within 5...6 seconds) using the red key and turn it off after three seconds.
12. After a few seconds, the buzzer should sound (three beeps) and the lamp on the instrument cluster should go out. The ignition can be turned on again no earlier than after 10 seconds. When using some controllers, sound signals may appear immediately when the ignition is turned off.

How it works and what blocks it

The immobilizer on Priora is designed to prevent theft of a vehicle by intruders. It consists of the following parts:

• APS unit, structurally combined with electrical package.
• A sensor, the presence of a key with a “native” chip in the form of a pumping loop wound around the ignition switch.
• Connecting wires for signal transmission.
• Keys with transponder.

When purchasing a car, the owner is given a special key with a red insert, which contains a chip that allows you to train working keys, and 2 working keys with programmable chips. The training key must be kept at home, because it gives access to setting up keys that the APS will consider “native”.

After activating the immobilizer and learning the working keys, the car can be started. But, only if the anti-theft unit “sees” the key with the transponder and a code is written in the chip that matches the information stored in the non-volatile memory of the APS.

In Priora, the immobilizer works as follows:

1. When the working key is turned in the ignition switch cell, a voltage pulse is applied to an inductive coil wound around the lock, which excites electromagnetic oscillations in space.
2. The switch contains an inductance in which the current strength changes, which allows it to receive a pulse from the pump loop.
3. The capacitance is charged, supplying power to the chip with the code.
4. The chip generates a return pulse, which is emitted into space and received by the pump loop.
5. The signal enters the APS, where the codes stored in the block’s memory and the received codes are compared.
6. If the data matches, the anti-theft device does not interfere with the operation of the engine ECU. If the codes do not match, the APS goes into protective mode, transmitting a signal to the ECU, which blocks power to the fuel pump, starter and ignition of the car.

What is an immobilizer for?

In addition to protecting the car from theft, the immobilizer performs a number of additional functions:

• the ability to control the delay for turning off the interior lighting;
• control of the rear fog lamp;
• checking the presence of the key in the ignition when opening the doors and giving a warning signal to the driver (one buzzer flashes in the instrument cluster);
• signaling that the external lighting is not turned off when the ignition is turned off (double buzzer signal).

Connecting limit switches

The signal cables from the limit switches are connected to the electrical control unit, which is located inside the car. From the front doors there are cables with blue-black and brown insulation; wires with gray-red protection are laid to the rear elements. An additional yellow-red cord is routed to the luggage compartment lid lock. The engine compartment hood switch is covered with white and black insulator. Before starting the connection, it is recommended to check the purpose of the cables according to the electrical diagram of the machine.

How to disable the immobilizer

If the immobilizer breaks down or malfunctions, the car owner is faced with a choice: replace the control unit or disable the system. A more rational solution, from a security point of view, would be to purchase a new control unit and keys, but there is no guarantee that this unit will last long. Another solution would be to deactivate the system. To disable the immobilizer unit, several methods are used that will require the performer to have knowledge in electronics. If you do not have such skills, then it is wiser to take the car to a service center, where the unit will be turned off by qualified specialists.

Using a crawler

A bypass device is often used when installing alarm systems with auto start. The operating principle of such a device is based on the use of a separate unit with a standard key or chip installed inside. The unit is located in the car interior under the plastic trim of the pillars or in the instrument panel.

The signal from the key or chip is read by the unit's antenna and transmitted to the ignition switch. The crawler is controlled using a separate relay. If necessary, the crawler can be set to permanently exclude the immobilizer from the circuit. The car can be started with a key without a chip, but data will be supplied to the immobilizer from the bypass device control unit.

One of the classic devices is the Starline crawler model BP-03, which can work in conjunction with any security alarms. Device connection options are shown in the photo below.

In addition to the key crawler, you can use keyless devices that emulate the signal from the chip. The operating principle of the devices is the same. The main disadvantage of this scheme is the retention of a standard immobilizer on board, so this option can only be recommended if security systems with auto start are installed.

Without a lineman

If the car owner does not want to install the crawler himself, then he can remove the immobilizer only by reprogramming the ECM system units.

On some blocks you will have to change the layout of the elements, but on others - not. Such products include the ECM model M73 manufactured by Avtel.

Before starting work, you must remove the unit from the car and connect a standard K-Line type adapter according to the diagram below. You will have to make the transition wiring harness from the unit to the adapter yourself.

Connecting the M73 block

After this you need to proceed as follows:

1. Install the OpenBox software on your computer, run it and read the stock EEPROM firmware.
2. Save the factory EEPROM data for rollback to its original state (if necessary) and modification.
3. Download and install the HxD file editor and open the downloaded firmware.
4. Add a line consisting of two FF characters at the beginning of the text and save the change.
5. Load the corrected file into the block memory. You can use ready-made versions of untrained firmware that are publicly available.
6. Disconnect the unit and install it back on the car.

To disable the immobilizer in the January 7.2 block, it is necessary to assemble the following circuit (based on the K-Line adapter), where there is a positive wire switch that acts as an ignition switch.

ECM connection diagram January 7.2 to disable the immobilizer

Then follow the steps:

1. Install ChipLoader version 1.97.7 or newer on your computer or laptop.
2. Launch the program and select the desired block type.
3. Connect to the unit using the “establish connection” function.
4. Read EEPROM chip data.
5. Click the “delete IMMO” button, after which the program will automatically correct the data in the file.
6. Close the program window, disconnect the unit from the wiring and return it to the car.

On M74 type blocks the following must be done:

1. Disconnect the battery from the car.
2. Remove the connectors from the block.
3. Install a homemade harness on the block (according to the diagram below). The circuit should use a double switch, which will allow voltage to be supplied in stages.
4. Connect the circuit via the VAG-COM cord.
5. Connect the circuit to the battery.
6. Turn on the first key of the switch, through which the programming permission signal will be sent.
7. Run the WinFlashECU program on your computer, in the settings window of which you select the block type and data transfer speed (the speed should be set to the minimum).
8. Turn on the second key, after which a notification about the start of communication with the block will appear in the program window.
9. Save the standard firmware of the unit and EEPROM and replace them with new ones. The flashing time may take several minutes.
10. After finishing the firmware, turn off the program, power and wiring.
11. After connecting the unit to the vehicle's on-board network, it may be necessary to adapt the zero throttle position. To do this, perform engine braking several times from 4 thousand revolutions to a thousand in second gear.

M74 block connection diagram

It should be noted that all flashing methods require the owner to have knowledge in electronics and software. If you doubt your own abilities, it is better to seek help from a service center.

Find immobilizer

To manipulate the immobilizer, you need to know where it is located. The standard location of the device is the vehicle's lock tab. The anti-theft device is secured with one screw, so removing it is not difficult. The antenna connector is located deep in the car panel, right behind the rubberized steering column curtain.

Malfunctions and their elimination

One of the problems of APS Priora is the implementation of a data exchange mechanism between the immobilizer and the vehicle's ECM via a diagnostic line. In this case, malfunctions occur in the system - the immobilizer signal lights up on the instrument panel and the engine does not start.

The code in the immobilizer may go wrong:

• from connecting diagnostic equipment;
• from the appearance of induced currents from the cell phone transmitter,
• from voltage surges in the vehicle's on-board network.
• from zero charge in the battery.

In the latest Priora models, an emergency shutdown procedure for the anti-theft system has been implemented. It is necessary to activate this function and register a password in the ECU. Then, if an emergency situation occurs with the APS, you can, by manipulating the gas pedal according to the factory instructions, start the car, ignoring the immobilizer blocking.

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Video

A video from the author Dmitriy Epishev demonstrates desoldering the microcircuit and resetting the data on the programmer.

The flip key for the Priora does not come from the factory - so you take a standard microcircuit and screw it into a new case: here you have a flip key. Such cases are usually sold on Aliexpress. You don't even need to re-program!

If the key is lost, then: it turns out that you can train any key for a Lada Priora car so that it is “recognized” by the immobilizer. Learning is as simple as pressing a couple of buttons.

When you buy a car, you are given keys to a Lada Priora with a diagram and three buttons and a regular mechanical one.

Making changes to your car for comfort is like an integral part of owning a car. The Lada Priora offers real scope for creativity, and many owners strive to make their “swallow” different from other cars. One of these conveniences - which, as a rule, does not come from the factory - is a flip key for the Lada Priora.

The standard ignition key is “learned” from the dealer or car service center, and the car owner most likely does not do this on his own. Because of this, learning the flip key for the Lada Priora can be difficult. With the necessary amount of patience, dexterity and dexterity, this procedure will become extremely clear, you just need to follow the instructions as clearly as possible.

The driver's door central locking actuator on the Priora has failed. We need to change it.

I purchased a gear motor for the electric lock of the driver's door lock (4 wires) on a Priora in the store.
Article: 2170-6512110-10. Price 350 RUR

This is the culprit. Served for 4 years.

I'll take it apart later and post a photo report.

Tags: replacing the central locking actuator on a Priora, standard central locking actuator on a Priora, electric door lock motor gearbox on a Priora

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Many car owners prefer to install security equipment on their own. For self-installation, you need to determine the alarm connection points on the Priora, and then connect the cables with subsequent insulation of the joints.

Regular key with buttons

The standard device that is sold with the car is the usual, “basic”, simple version. Inside the case there is a board that includes a control panel for some vehicle systems. In Priora, the key is not just a tool for manually opening doors, it is a pocket device that simplifies the operation of the car.

The remote control control board is attached to the key blade, which is inserted into the ignition switch. The design of this tool is a little flimsy, so due to the swing of the blade, the remote control board suffers and does not respond to button presses the first time.

A standard unit, like any other, operates via a radio channel and a transponder channel. The first sends commands to the driver's door module and the electrical package control module, which is located behind the center console. The second channel transmits signals with the immobilizer control unit APS-4 or APS-6.

Replacing the ignition key

The ignition key can simply be replaced and made at any stall that specializes in duplicate keys. If you have lost your key, you can use the training key to create a duplicate.

It is highly not recommended to use the training key all the time, since the Priora is equipped with an immobilizer, and the loss of the training key can lead to serious consequences, the solution of which will cost a tidy sum.

Purpose - why to teach

Each car comes with two keys from the factory: one training key and one regular key without schematics. The device containing the microcircuit is trained to recognize the car and is installed as an immobilizer driver. After which an anti-theft alarm is installed. After this tricky procedure, they are both able to:

• Control door locks and trunk lid from a distance;
• Manage alarms;
• Manipulate power windows;
• “Contact” the immobilizer and unlock the engine control.

About the immobilizer

It should be remembered that the Priora is equipped with an anti-theft system, namely an immobilizer. This function will allow you to start the car only with the key that is in the ECU memory. All attempts to start the car engine using a duplicate key will be futile and will not lead to success, since it is necessary to register the key in the ECU memory, which requires a training key.

When replacing the lock and contact group, there is no need to retrain the immobilizer.

Training procedure

From the moment the engineer made the key for the Lada Priora, the demand for ECU reprogramming has increased significantly. You need to prepare for reprogramming the ECU and not do it chaotically: the sequence of steps must be completed without long breaks.

You can train keys by following the following procedure:

Close all doors. Make sure that the sensors on the control panel do not accidentally light up and interfere with the process: add several liters of fuel to the tank, remove faults, etc. Sound signals can confuse you. The vehicle's ignition must initially be turned off. For convenience, place the training copy in your right hand, and the first worker, who will be assigned a code in the ECU, in your left hand. Turn on the ignition with the training key (it is smaller and marked with a red plastic insert), wait at least 6 seconds.

Attention! In the entire algorithm, you never need to start the engine, that is, you do not need to turn the key all the way: you only need to turn on the ignition.

Turn off the ignition by turning the key towards you. After this, the yellow car icon will flash (very quickly) on the dashboard. This means that the ECU has authorized and started the key learning mode; it should flash until all actions are completed as a sign that everything is being done correctly. Remove the training tool from the ignition lock cylinder, quickly insert the first working key within the next 6 seconds and just turn on the ignition. A triple beep will sound (not a horn). After a few seconds, two more beeps will sound - this means the code has been successfully written: you can turn off the ignition! If there were no two beeps, it means something went wrong and you need to repeat it all over again. The last steps are to confirm the recording of the code for the new control panel. After the double signal, you can remove the working key, but then you quickly need to insert a small, training key. Turn on the ignition, then again wait for three or two beeps. Turn off the ignition, but do not remove the key! After a single beep, the yellow vehicle icon on the dashboard will flash even faster. Turn the ignition on then turn off after three seconds. Three more beeps will sound. Do not turn on the ignition for another 10-20 seconds. It's not always possible to get everything done the first time. For some Lada Priora cars, the sound signal may disappear - it is worth trying to continue the algorithm if the yellow car icon is still blinking. Training of the second instrument is carried out in the same sequence.

How to train a Priora key fob without a red key? — AutoMastera.net

Absent Age: 38 years old I've been told 3140 times I said 677 times

Second 21-8-2015 21:29:07|Messages from the author: how to bring the firmware to the state of a new computer What does this mean? In normal Russian, describe the essence of the problem and what result do you want to achieve from the block?

Answer Like Dislike Thank you! 3140 Quote Props Complaint

Absent Age: 39 years old I was told 27 times I said 2 times RU

6# 21-8-2015 22:49:29|Messages from the author As I understand it, the car came from another city and there is no red key. But the working key is either lost or broken. Alternatively, try to get a new ignition switch from the store with a red key and a blank. Clean it eeprom in the computer, you put a new lock blank in the key fob and teach it. Then the lock is taken to the store (believe me, nothing will happen to him from such actions; it will also work on other cars). And you still have your black key. Which now works

Answer Like Dislike Thank you! 27 Quote Props Complaint

Absent Age: 36 years old I've been told 237 times I said 57 times RU

7# 21-8-2015 23:16:41|Messages from the author In general, you need to clean the EPROM in the ECU. And then take a red key from any Priora or Kalina, pull out the chip and train a new key. There is no other way. In any case, you need a training red key. But it’s best and quickest to do immo off..

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Absent I was told 16 times I said 3 times U.A.

10# 14-9-2015 22:12:58|Messages from the author !!!ATTENTION!!! An exception to the rule is the firmware for Priora I427DC03. The training data in this firmware is located in the external eeprom, and not in the flash processor. The checksum was also moved to the place where the training data was previously stored. Therefore, if your bootloader does not write the entire firmware, the checksum will not be rewritten with all the consequences. For this case, special training data format files (e2p - 64k) have been prepared, the name of which corresponds to the firmware. They are placed in the “For_recording_checksum_folder” folder. They must be written to the block in the training data recording mode. This will allow you to enter the correct checksum into the block. Also in the MEPro calibration editor, owners of the M74 (638) module can disable checksum verification, then a separate rewrite of the training data will not be required.

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Replacing the battery of the Lada Priora remote control

The moment when the battery in the remote control needs to be replaced is determined by the fact that when you press any button (for example, when turning an alarm on/off), the indicator on the remote control flashes twice; If it doesn’t even blink, it means the battery has become unusable. During normal operation, the indicator should light up once.

The control panel contains a lithium battery (CR2032) in the flip key fob, the voltage is 3 V. To remove it, you need to open the case (the cover is secured with one screw) and carefully remove the board. Place a new battery taking into account the polarity; install the board back and reassemble the case. The electrical package will work in the same mode, the key fob code does not change.

Resynchronization of remote control codes

The ECU transmits data to the Lada Priora remote control via a radio channel and a transponder channel. Problems arise with the radio channel: if you press buttons (send a car signal) outside its coverage area, then after 1000 presses the code is resynchronized: while sending a command in the radio signal area, the electrical package will not perceive the remote control code.

Also, a code error may occur if the battery is discharged: in this case, the ECU will briefly generate a random code that will erase the codes of all remote control chips. In these cases, you will have to enter the remote control data into the electronic control unit again.

A flip key for Lada Priora is, first of all, beautiful. It is pleasant to the touch; all remote control buttons are located on the body. Its undeniable advantage is that it will not damage the fabric during storage, because its blade will be hidden. The blade is attached to it more securely, and it will not loosen the remote control chip.

Possible causes of malfunctions

If the immobilizer “does not see” the key, there may be several reasons. There is nothing to break in this system (unless during repairs or installation of additional equipment the reader antenna or its wiring is damaged), software failures occur more often - for example, the immobilizer “forgets” the code written into it.

This may not necessarily be a problem with a specific immobilizer (like in old Renault Megane/Scenic), but may cause the auto-start alarm to be installed incorrectly. If the installer, instead of connecting the immobilizer crawler, attaches one of the chips to the reader antenna (this preserves the functionality of the keys from the kit), then when the ignition is turned on with the second key, where the chip is stored, the immobilizer will receive a signal from two chips simultaneously. This situation is abnormal for the controller, and over time it deletes one of the codes from memory.

It is worth considering that if the immobilizer prevents the car from starting, this may indicate an unsuccessful theft attempt. The first thing a car thief needs to do after he has dealt with the ignition switch (and, note, the Hollywood stereotype about tearing off and twisting wires has nothing to do with reality) is to register his own chip in the immobilizer memory. If you have access to the diagnostic connector, this can be done in literally seconds on many machines.

From his own practice, the author noticed that an attempt at theft becomes noticeable only after a thorough inspection of the lock cylinders - their damage is so small. Therefore, in the morning, having opened the car without any problems and trying to start the engine, the owner is surprised to find a blinking immobilizer indicator, indicating that the immobilizer does not recognize the chip code in the key as correct. When connecting diagnostic equipment on such a car, you may find that only one key is registered in the immobilizer memory instead of the standard two.

Therefore, you can often see installation of anti-theft locks on diagnostic connectors and re-pinning of connectors, making direct connection of the programmer impossible. However, such measures make sense only on common cars, with which it is easier to choose another object than to waste extra time on theft. If a specific car is stolen to order, then the thief will be able to gain access to the CAN bus without a diagnostic connector.

Video: Immobilizer does not see Solaris key, solution to problem