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

Necessary preliminary tasks:

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 of 3.

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

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

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

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Installation:

Clean support face of knock sensors on engine block.

Fig 4: Cleaning Support 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.