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
Principle
With the Cruise Control, a set speed can be adjusted
using the buttons on the steering wheel.
The system maintains the set speed. The system
accelerates and brakes automatically as
needed.
General information
The system can be activated starting at
20 mph/30 km/h.
Depending on the vehicl