Keyless Entry: Description and Operation

Immobilizer, Vehicles With an Access/Start Authorization Switch (E415) (Electronic Ignition Switch)

The immobilizer control is integrated either in the Comfort system central control module (J393) or in the Access/start authorization control module (J518).

The following components are also part of the immobilizer:

• Ignition key with built-in transponder.

• Induction coil in Access/start authorization switch (E415) (electronic ignition lock).

• Engine control module (ECM).

• Transmission control module (TCM).

If control module is replaced, select Guided Functions of the respective control module using the Vehicle Diagnostic Tester.