Replacing the immobilizer control module: General
A new immobilizer control module must be initiated (programmed) after installation. Data, for example about which engine control module (ECM) it will communicate with is programmed. The immobilizer control module adapts its communication accordingly. This adaptation cannot be changed. This means that the immobilizer control module cannot be transferred between different cars.
All cars with an immobilizer have a unique PIN code, Immobilizer-VGLA code, and in certain cases also a VIN code. These are programmed into the control module before the car leaves the factory or when a defective control module is exchanged as a replacement part.
The code(s) cannot be changed. They are stored with other vehicle data in the Volvo database.
When programming keys in the control module, the control module security code is programmed into the transponder in the keys. All keys must also be replaced when replacing the immobilizer control module. The new control module does not recognize keys with the safety code from the previous control module.
When replacing a defective control module with a replacement part:
- all codes from the original control module
- new keys.
must be programmed.
This is carried out during initialization in the Vehicle communication input in VIDA.