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Home >> BMW >> 2012 >> 335xi Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Engine Electrical System - Repair - E92 >> Electronic Switching Or Control Units >> 12 14 521 Replacing crankshaft pulse sensor (N55)

12 14 521 Replacing crankshaft pulse sensor (N55)

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

Necessary preliminary tasks: 

Unlock connector (1) and remove.

Release screw (2).

Tightening torque: 13 62 6AZ .

Remove connector housing from crankcase.

Release screw (3).

Tightening torque: 13 62 7AZ .

Pull pulse sensor from crankcase and remove.

Fig 1: Identifying Pulse Sensor And Screw
G09846471Courtesy 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
G09846472Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Assemble engine.

Check stored fault message.

Delete fault memory.