12 14 600 Replacing knock sensor(s) (S54): Installation:

WARNING: This page is about a different car, the 2002 BMW M Roadster, 2002 BMW M Coupe, 2001 BMW M Roadster, and 2001 BMW M Coupe. However, it is still accessible from the selected car via links, so may be relevant.

Clean contact surface of knock sensors on engine block.

Fig 1: Installing Knock Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Interrogate fault memory of DME control module.
Check stored fault messages.
Rectify faults.

Then clear fault memory.