BMW X3 Service & Repair Manual: Removing/replacing knock sensor (3rd and 4th cylinder) (N20, N26)

Necessary preliminary tasks:

Unlock connector (1) and remove.

Release bolt (2) on knock sensor.

Remove knock sensor for 3rd and 4th cylinders.

Electrical

Installation note:

Clean contact surface of knock sensor on engine block.

Electrical

NOTE: Reassemble the vehicle.

Check stored fault message.

Delete fault memory.

Necessary preliminary tasks: Read out the fault memory of the DME control unit. Switch off ignition. Remove THROTTLE VALVE ASSEMBLY . Unloc ...

IMPORTANT: Aluminum-magnesium materials. No steel screws/bolts may be used due to the threat of electrochemical corrosion. A magnesium cr ...

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 ...

BMW X3 Owners Manual