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Remove/install knock sensor - AR15.12-P-2185MCU

ENGINE 132.910 in MODEL 451.3/4 

Fig 1: Identifying Knock Sensor Remove/Install Components
G10978145Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
DANGER Risk of death  caused by vehicle slipping or toppling off the lifting platform. Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. AS00.00-Z-0010-01A
1 Raise vehicle with vehicle lift    
2 Disconnect electrical connector (1) at knock sensor (A16)    
3 Unscrew screw (2) and remove knock sensor (A16) IMPORTANT Observe installation position of knock sensor (A16).
INSTALLATION IMPORTANT : The contact surface for the knock sensor (A16) on the cylinder crankcase must be clean and flat.
TORQUE SPECIFICATION
*BA15.12-P-1001-01G 
4 Install in the reverse order    
5 Read out fault memory, erase if necessary When installing new a knock sensor (A16).  
REFER TO SELF-DIAGNOSTIC SYSTEMS Connect STAR DIAGNOSIS and read out fault memory   AD00.00-P-2000-04MCC
ECI IGNITION SYSTEM

Number Designation ENGINE 132.9
BA15.12-P-1001-01G Bolt, knock sensor to crankcase Nm 20