12 14 600 Replacing knock sensor (M52TU, M54, M56)

WARNING: This page is about a different car, the 2003 BMW X5, 2002 BMW X5, and 2001 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Necessary Preliminary Tasks:

Check stored fault messages.
Switch off ignition.
Remove intake air manifold. Refer to 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (M54) .

Unclip plug connection (1) from holder of cable duct (2) and disconnect.

Fig 1: Disconnecting Plug Connection From Holder Of Cable Duct

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Release screw (1) and remove knock sensor for cylinder bank 1-3.

Fig 2: Removing Knock Sensor For Cylinder Bank 1-3

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Release screw (2) and remove knock sensor for cylinder bank 4-6.

Fig 3: Removing Knock Sensor For Cylinder Bank 4-6

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Installation:

Clean support face of knock sensors on engine block.

Tightening torque, (20 N.m.).

Fig 4: Identifying Face Of Knock Sensors On Engine Block

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Installation:

Read out fault memory of control unit of Digital Motor Electronics (DME).

Now clear the fault memory.