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
Input/output Diagram, Steering Column Switch Cluster
Fig. 125: Steering Column Switch Cluster Input/Output Diagram
COMPONENTS DESCRIPTION CHART
Steering column stalk for turn-indicator/high-beam switch
Steering column switch cluster (SZL)
Steering column stalk wiper switch
Footwell module (FRM