12 14 611 Replacing left knock sensors (N62, N62TU)

WARNING: This page is about a different car, the 2005 BMW 545i and 2004 BMW 545i. However, it is still accessible from the selected car via links, so may be relevant.

(cylinder bank 5 to 8)

Necessary Preliminary Tasks:

Read out fault memory of DME control unit.
Check stored fault messages.
Switch off ignition.
Remove intake air manifold. Refer to 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (N62) .

IMPORTANT: Mixing up the knock sensor plug connections will result in engine damage! Routing of wires and plug connections must conform to the original routing. This eliminates the risk of confusion and mix-ups

Unfasten screws.

Tightening torque, refer to 12 14 2AZ in ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES .

Remove knock sensors (1).

Fig 1: Identifying Knock Sensors

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Now clear the fault memory.