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Home >> BMW >> 2011 >> 740i >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Engine Electrical System - Repair (N54, 2011-2012) >> Electronic Switching Or Control Units >> 12 14 521 Replacing crankshaft pulse generator (N54)

12 14 521 Replacing crankshaft pulse generator (N54)

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

Necessary preliminary tasks: 

NOTE: The installation location of the crankshaft pulse generator is underneath the starter.

Preparatory tasks:

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

Release screw.

Tightening torque 13 62 4AZ .

Withdraw pulse generator (2) from crankcase.

Installation: 

Replace sealing ring.

Fig 1: Detaching Plug From Crankshaft Pulse Generator
G04751285Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Assemble engine.

Check stored fault message.

Now clear the fault memory.