12 14 600 Replace the knock sensor (N14, N16, N18)

Necessary preliminary tasks: 

• Switch off ignition.
• Read out the fault memory of the DME control unit.
• Check stored fault messages.
• Disconnect NEGATIVE BATTERY CABLE .
• All-wheel drive vehicles only: 

Remove INTAKE PLENUM .

Installation location:

The knock sensor is located under the intake plenum next to the starter motor.

Use a reversible ratchet (1) and extension to release the screw of the knock sensor from below.

Release screw and remove knock sensor (2).

Pull knock sensor slightly downwards until the connector of the knock sensor is accessible. Unlock connector (1) and remove.

Installation note: 

Clean contact surface of knock sensor on engine block.

Tightening torque 13 62 2AZ .