Crankshaft Position Sensor: Service and Repair

12 14 521 Replacing Crankshaft Pulse Sensor (N52T)







IMPORTANT: Read and comply with notes on protection against electrostatic discharge (ESD protection).







IMPORTANT:
Aluminium magnesium materials.

No steel screws/bolts may be used due to the threat of electrochemical corrosion.

A magnesium crankcase requires aluminium screws/bolts exclusively.

Aluminium screws/bolts must be replaced each time they are released.

Aluminium screws/bolts are permitted with and without colour coding (blue).

For reliable identification:
Aluminium screws/bolts are not magnetic.
Jointing torque and angle of rotation must be observed without fail (risk of damage).







Necessary preliminary work:
- Read out the fault memory of the DME control unit.
- Switch off ignition.
- Remove intake plenum.







NOTE: Installation location of pulse sensor for crankshaft is underneath starter motor.

Detach plug (1) from crankshaft pulse sensor (2).
Release screw.

Installation note:
Replace aluminium screws.
Tightening torque 13 62 2AZ.

Withdraw pulse sensor (2) from crankcase.

Installation note:
Replace sealing ring.







NOTE:
Check stored fault messages.
Delete fault memory.