Remove/install knock sensors (Engine 272, 273) - AR15.12-P-2184GZA

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ENGINE 272, 273 in MODEL 164, 251

Fig 1: Identifying Knock Sensors Remove/Install Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/install
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Remove air filter housing		AR09.10-P-1150GZA
2	Remove resonance intake manifold		AR09.20-P-1961GZA
3	Disconnect electrical connector at right knock sensor 1 (A16/1) or left knock sensor 2 (A16/2)
4	Remove bolt (1) and take out right knock sensor 1 (A16/1) or left knock sensor 2 (A16/2)		*BA15.10-P-1001-02B
5	Install in the reverse order
6	Connect STAR DIAGNOSIS and read fault memory	Stored faults which may be caused by disconnecting cables or by simulation during test operations, must be erased in the fault memory after completing the work.

KNOCK SENSORS

Number	Designation		Engine 272	Engine 273
BA15.10-P-1001-02B	Bolt, knock sensor to crankcase	Nm	20	20