Remove/install knock sensors - AR15.12-P-2184F

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

ENGINE 120.98

Fig 1: Identifying Knock Sensors

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig. item, etc.	Work instructions
	Remove fuel distributor with injection valves	Engine 120.980/981	AR07.03-P-1452F
	Remove fuel distributor with injection valves	Engine 120.982/983	AR07.03-P-1451F
	Remove air cleaner, install		AR09.10-P-1050F
	Remove/install intake manifold	Engine 120.980/981	AR09.20-P-1310F
	Remove/install intake manifold	Engine 120.982/983	AR09.20-P-1310FA
A29g1, A29g2, A30g1, A30g2	Knock sensors	Unbolt
A29g1, A29g2, A30g1, A30g2	Knock sensors	Both cables (A29, A30) join together on the left and right the knock sensors in a protective hose (shaft tube) They can only be replaced as one device	*BA15.10-P-1001-02A

KNOCK SENSORS

Number	Designation		Engine 112.910/911/912/ 913/914/915/ 916/917/920/ 921/922/923/ 940/941/942/ 943/944/945/ 946/947/949/ 951/953/954/ 955/960/961/ 970/972/973/975	Engine 119, 120
BA15.10-P-1001-02A	Bolt securing knock sensor to cylinder block	Nm	20	20