12 14 521 Replacing crankshaft pulse sensor (N55)

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2015 BMW 740i, 2015 BMW 740Li xDrive, 2015 BMW 740Li, 2014 BMW 740i, and 2014 BMW 740Li xDrive. 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) .

Necessary preliminary tasks:

Read out the fault memory of the DME control unit.
Switch off ignition.
Remove STARTER MOTOR .

Unlock connector (1) and remove.

Release screw (2).

Tightening torque 13 62 2AZ .

Remove connector housing from crankcase.

Release screw (3).

Tightening torque 13 62 8AZ .

Pull pulse sensor from crankcase and remove.

Fig 1: Identifying Connector And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

During installation of pulse sensor make sure that guide pin (1) of pulse sensor is inserted in guiding groove (2) of crankcase.

Fig 2: Identifying Pulse Sensor Guide Pin And Crankcase Guiding Groove

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Assemble engine.
Check stored fault message.
Delete fault memory.