General information
When the vehicle is locked, the vehicle alarm
system reacts to the following changes:
Opening a door, the hood, or the tailgate.
Movements in the car's interior.
Changes in the vehicle tilt, for instance, during
attempts at stealing a wheel or when towing
the vehicle.
Disc
REPLACING ALL SPARK PLUGS (N42, N40, N46, N45, N52, N52K, N51)
Special tools required:
12 1 171
12 1 200.
Necessary preliminary tasks:
Switch off ignition
Remove ignition coils.
Unscrew spark plugs with special tool 12 1 171.
Installation:
Tighten down spark plugs with special tool 12 1 171a