REPLACING ALL SPARK PLUGS (N54, N63, N74)
Necessary preliminary tasks
Switch off ignition.
Remove IGNITION COILS.
IMPORTANT: Wear safety goggles.
Oil and dirt particles may get into your eyes!
Clean spark plug slot with compressed air.
Unscrew spark plugs with special tool 12 1 220 and extensi
IMPORTANT: Comply with the following topics from "Body, General":
Safety regulations.
Handling electrical/electronic equipment, airbags and restraint systems.
1. General information
The following procedures are used for repairs:
MAG welding (M etal Ac tive G as welding)
Resistance pressure sp