Antitheft and Alarm Systems: Testing and Inspection

System, Testing

NOTE: The immobilizer is deactivated for a period of 10 minutes after every successful log-in function: The operation of system should not be tested during this period.

- Switch off ignition for at least 5 minutes.
- Cover reader coil with a slotted metal plate, for example by positioning appropriate shim on ignition lock and inserting ignition key through hole into ignition lock.
or
- Disconnect wire of reader coil at connector between ignition/starter switch and instrument cluster.
- Start engine.

The engine must not run and warning light must flash.
- Start self-diagnosis of immobilizer and check DTC memory.

Use vehicle diagnostic, testing and information system VAS 5051.

One of following two fault messages should appear on display:
- Key signal too low
or
- Immobilizer reader coil-D2
- Erase DTC memory and end output.