BMW X3 Service & Repair Manual: Removing/replacing knock sensor (1st and 2nd cylinder) (N20, N26)

BMW X3 Service & Repair Manual / Electrical / Electronic switching or control units / Removing/replacing knock sensor (1st and 2nd cylinder) (N20, N26)

Necessary preliminary tasks:

  • Read out the fault memory of the DME control unit.
  • Switch off ignition.
  • Remove THROTTLE VALVE ASSEMBLY .

Unlock connector (1) and remove.

Release bolt (2) on knock sensor.

Remove knock sensor for 1st and 2nd cylinder.

Electrical

Installation note:

Clean contact surface of knock sensors on engine block.

Electrical

NOTE: Reassemble the vehicle.

Check stored fault message.

Delete fault memory.

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    Switch on ignition. Connect MoDiC or DIS/GT1 Tester. Select "Coding" program. For subsequent procedure, follow instructions in MoDiC or DIS/G ...

    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 ...

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