The regular anti-theft system of the car is called immobilizer. Sometimes the immobilizer shutdown is the only possible means of starting the engine engine. This is necessary, for example, when reprogramming the keys of the car immobilizer.
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In order to decide on the immobilizer shutdown, there must be quite good reasons. Since when the anti-theft protection system is disconnected, the car becomes vulnerable and affordable for hijackers.
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If the solution to disable the immobilizer is dictated by the need, then first read how it works. The principle of operation Immobilizer is the restriction of access to the electronic motor control unit (ECU), based on tolerance by password. This is a completely separate, independent system that has no relation to the anti-theft system.
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Aftermarket Immobilizer (standard immobilizer) operates on the basis of irregular. But it does not act physically, but by programmatically - based on the microprocessor blocks the functions of the engine computer. If you turn off, then turn on the ignition, you will need to enter the password again. At the same time, each new password will be generated automatically, then it is read from the chip key.
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With a sudden blocking of a standard immobilizer, you can go one of two ways: disable it with specialists with special equipment or replace the engine computer. The second method requires large spending time, so some auto owners make a decision to disable immobilizer on their own.
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The process of shutdown depends on the car brand. On some of them, the disabling of the immobilizer can lead to a violation of the proper engine operation, or not possible. Then, if troubleshooting occurs, the only way is to replace the immobilizer, reprogram the keys, perform synchronization with the ECU.
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If the machine brand allows you to turn off the immobilizer, then with a certain skill and equipment, the car owner can do it yourself, without risking the machine's condition. You need to start with dismantling and disassembling the engine of the engine. Remove the control unit - the controller.
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The next step is reprogramming the control unit. Requires equipment, such as a computer, Pak bootloader programmer. Connect the package loader to the controller, consider it the firmware. Save it on your computer. Take the clean firmware, fill it into the control unit. Then disconnect the controller and the package loader.
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The last step is to disable the immobilizer control unit. It is located at the level of the radio, behind the central console. If you do not do it, then when installing the computer back to the car, it will be blocked again. Remove the console with an immobilizer bu, cut two wires from the connector - the 9th and 18th. Connect them and draw them. In the reverse sequence, install the controller. Get the engine.
Today, almost any car is equipped with a regular immobilizer, which serves as the protection of your car from unauthorized access. All car manufacturers are categorically against its disconnection. The correct solution is to program the car keys.
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