Necessary preliminary tasks:
Unlock connector (1) and remove.
Release bolt (2) on knock sensor.
Remove knock sensor for 3rd and 4th cylinders.
Installation note:
Clean contact surface of knock sensor on engine block.
NOTE: Reassemble the vehicle.
Check stored fault message.
Delete fault memory.
BMW X3 Service & Repair Manual > Rear brakes: Guideline for applying brake pad paste on brake pads and brake anchor plate
IMPORTANT:
So as not to damage the surface coating, if possible do not mechanically clean the guide
surfaces for the brake pads on the brake caliper mounting bracket. Instead, clean with brake
cleaner BMW part no. 83 19 2 154 780 and apply a thin coating of brake pad paste BMW part
no. 83 ...