Technical Bulletin Anti-theft Immobilizer On Board Diagnostic (OBD)

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Short Description
Immobilize- electronic components and warning light function
The immobilize- electronics consist of:
- control electronics in instrument cluster
- a warning light fo- anti-theft immobilizer sensor -K117- in instrument cluster (speedometer display)
- a matched engine control module
- an induction coil on the ignition lock
- matched ignition keys with electronic components (transponder and response reade- memory)

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Content

Matching ignition keys
Note:
- If new or additional ignition keys are required they must be matched to the immobilizer control module.
- Note the procedure when changing the locking set and the immobilizer control module.
- The matching procedure must always be carried out for all the ignition keys, including the existing ones.
- The number of keys already matched will be displayed when the adaptation (matching) function is selected.
- If only one key is matched, the vehicle can be started immediately with this key. If more than one key has been matched, the vehicle can only be started immediately with the last key matched.
- The matching procedure can be interrupted by pressing the -C-button on the VAG 1551.

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