12 14 600 Replacing the knock sensor at cylinders 1-2 (230i and 230i xDrive coupe/convertible)

Necessary preliminary tasks: 

• Remove ALTERNATOR .

Removal: 

Unlock and disconnect plugs (1).

Release screw (2).

Remove knock sensor (3).

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Preparation for installation: 

Clean contact surface of knock sensor on engine block.

Installation: 

Install knock sensor (3).

Tighten screw (2).

Observe tightening torque without fail!

Tightening torque 13 62 5AZ .

Attach and lock connector (1).

Connector (1) must engage audibly.

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Required follow-up work: 

• Install ALTERNATOR .