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

BMW X3 Service & Repair Manual / Electrical / Electronic switching or control units / Removing/replacing knock sensor (3rd and 4th cylinder) (N20, N26)

Necessary preliminary tasks:

  • Read out the fault memory of the DME control unit.
  • Switch off ignition.
  • Remove STARTER MOTOR.

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.

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