12 14 611 Replacing left knock sensors (cylinder bank 5 to 8) (M60, M62)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 BMW 540i, 2002 BMW 540i, 2001 BMW 540i, 2000 BMW 540i, and 1999 BMW 540i. However, it is still accessible from the selected car via links, so may be relevant.

Interrogate fault memory of DME control unit.

Switch off ignition.

Disconnect intake air manifold,

refer to 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (M62) .

CAUTION: Mixing up the knock sensor plug connections will result in engine damage!
The wiring and plug connections must correspond to the original routing. This eliminates the risk of mix-ups.

Knock sensor (3) monitors combustion in cylinders 5 and 6.

Knock sensor (4) monitors combustion in cylinders 7 and 8.

Release screws.

Tightening torque, refer to ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUE .

Fig 1: Identifying Screws Of Left Knock Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Interrogate fault memory of DME control unit.
Check stored fault messages.
Rectify faults.
Now clear the fault memory.