Remove/Install Left Front Knock Sensor - AR15.12-P-2186MSC

Engine 256.9 In Model 167 

Fig 1: Left Front Knock Sensor Components Location - Engine 256.9 In Model 167

Courtesy of MERCEDES-BENZ USA

Notice	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Remove upper Engine cover.		AR01.10-P-2405MSC
2	Remove intake air duct upstream of air filter.
3	Remove oil filter element and seal opening with suitable protective cover.
			AP18.00-P-0101MRT
		: Replace O-ring.
		Set of protective covers	Fig 2
4	Release and disconnect electrical connector (2).
5	Remove screw (1) and remove knock sensor 2 (A16/2).	: The contact surfaces must be free from soiling.
		Bolt, knock sensor to crankcase	*BA15.10-P-1001-02B
6	Install in the reverse order.
7	Read out and delete fault memory.
			AD00.00-P-2000-06ME

KNOCK SENSORS

Number	Designation		Engine 256
BA15.10-P-1001-02B	Bolt, knock sensor to crankcase	Nm	18

Fig 2: Identifying Set Of Protective Covers (001 589 12 91 00)

Courtesy of MERCEDES-BENZ USA