12 14 521 Replacing crankshaft pulse sensor (N54)

WARNING: This page is about a different car, the 2016 BMW Z4, 2015 BMW Z4, and 2014 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .

IMPORTANT: Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color 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 code memory of the DME control unit.
Switch off ignition

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 aluminum screws.

Tightening torque 13 62 4AZ .

Fig 1: Identifying Crankshaft Pulse Sensor And Plug

Courtesy of BMW OF NORTH AMERICA, INC.

Withdraw pulse sensor (2) from crankcase.

Installation note:

Replace sealing ring.

NOTE: Check stored fault messages.
Delete fault memory.