Crankshaft Position Sensor: Service and Repair

12 14 521 - Replacing crankshaft pulse generator (N54)





Important!
Read and comply with notes on protection against electrostatic damage (ESD protection) 61 35 ... Notes on ESD Protection (Electro Static Discharge).





Important!
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:
Jointing torque and angle of rotation must be observed without fail (risk of damage).





Necessary preliminary tasks:
- Read out fault memory of DME control unit
- Switch off ignition





Note:
Installation location of pulse generator for crankshaft is underneath starter motor.

Detach plug (1) from crankshaft pulse generator (2).

Release screw.

Installation Note:
Replace aluminium screws.
Tightening torque 13 62 4AZ 13 62 Senders for Control Unit.

Withdraw pulse generator (2) from crankcase.

Installation Note:
Replace sealing ring.





Note:
Check stored fault messages.
Now clear the fault memory.