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Home >> BMW >> 2004 >> X3 30i, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Engine Electrical System - Repair (M54) >> Electronic Switching Or Control Units >> 12 14 600 Replacing knock sensor

12 14 600 Replacing knock sensor

Necessary preliminary tasks: 

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

Fig 1: Unclipping Plug Connection From Holder Of Cable Duct
G03310553Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 2: Removing Knock Sensor For Cylinder Bank 1-3
G03310554Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 3: Removing Knock Sensor For Cylinder Bank 4-6
G03310555Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Clean support face of knock sensors on engine block.

Fig 4: Cleaning Support Face Of Knock Sensors
G03310556Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque 12 14 2AZ .

Installation: 

Read out fault memory of control unit of Digital Motor

Electronics (DME).

Now clear the fault memory.