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 171an
Principle
The Shift lights in the instrument cluster indicate
the maximum shift point at which the best possible
acceleration can be achieved.
General information
Depending on the equipment and national-market
version, the Shift lights are active in the M
manual mode of the Steptronic Sport transmis