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12 14 521 Replacing pulse generator on crankshaft (M54/M56)

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Necessary Preliminary Tasks: 

NOTE: Installation location of pulse generator for crankshaft is underneath starter motor.
NOTE: For a better overview, this work step is shown on an engine that has been removed.

Unlock plug (1) and remove. Unscrew bolt (2). Remove pulse generator (3).

Fig 1: Unlocking Plug
G03164297Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Check stored fault messages. Now clear the fault memory.