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Home >> BMW >> 2013 >> 135i 2D Convertible, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Electrical System - Repair >> 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 Connector 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 Guide Pin And Groove
G09846472Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Assemble engine.
Check stored fault message.
Delete fault memory.