Necessary preliminary tasks:
Unlock connector (1) and remove.
Release bolt (2) on knock sensor.
Remove knock sensor for 1st and 2nd cylinder.
Installation note:
Clean contact surface of knock sensors on engine block.
NOTE: Reassemble the vehicle.
Check stored fault message.
Delete fault memory.
BMW X3 Service & Repair Manual > Suspension: Front axle suspension
REMOVING AND INSTALLING/REPLACING FRONT UNDERBODY PROTECTION
NOTE:
Illustration only an example. Detail deviations, depending on engine version,
are possible.
Unfasten screws (2).
Remove front underbody protection (1).
REMOVING AND INSTALLING/REPLACING REAR UNDERBODY PROTECTION
NOTE:
Sch ...