The Steering Column Switch Cluster - An Interface
The steering column switch cluster is a "mechanical and electrical interface"
from the steering wheel to the
vehicle; it is firmly connected mechanic
Signal Detection
The functions of the steering column switch cluster are:
Detecting the switching signals of the steering-column switches
Detecting the controls in the multifunction steering wheel
REMOVING AND INSTALLING/REPLACING BOTH INTAKE FILTER HOUSINGS (N63)
Necessary preliminary work
Switch off ignition.
Remove ACOUSTIC COVER
NOTE: Description for intake filter housing. Procedure on right side
identical.
Release clamps (1).
Tightening torque 13 62 9AZ.
Disconnect connector (2) a
IMPORTANT: Always check that the solenoid valves are clean during removal
and
installation.
Possible malfunctions if valves are contaminated:
Irregular operation
OBD incorrect entry
Poor exhaust gas values
Low engine performance
IMPORTANT: Risk of damage!
Do not clean solenoid valves with co