Remove/install knock sensors (Engine 113) - AR15.12-P-2184GZ

WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 2012 Mercedes-Benz GL550, 2012 Mercedes-Benz GL450, 2011 Mercedes-Benz ML63, 2011 Mercedes-Benz ML550, and 2011 Mercedes-Benz ML350. However, it is still accessible from the selected car via links, so may be relevant.

ENGINE 113.964 in MODEL 164.175

Fig 1: Identifying Knock Sensors Remove/Install Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/install
	Risk of injury caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof.	When moving components, ensure that no body parts or limbs are within the operating range of moving parts.	AS00.00-Z-0011-01A
1	Open engine hood		AR88.40-P-1000GZ
2	Remove air filter housing		AR09.10-P-1150GZ
3	Remove intake manifold	The intake manifold must not be disassembled.	AR09.20-P-1310GZ
4	Disconnect electrical connector at right knock sensor 1 (A16/1) and left knock sensor 2 (A16/2)
5	Remove bolts (1)		*BA15.10-P-1001-02A
6	Remove right knock sensor 1, (A16/1) and left knock sensor 2 (A16/2)
7	Install in the reverse order
8	Read out fault memory and erase if required
	Connect up STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
		STAR DIAGNOSIS diagnosis system	*WH58.30-Z-1048-13A
	Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the running engine	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not grasp hot or rotating parts.	AS00.00-Z-0005-01A
9	Carry out engine test run

KNOCK SENSORS

Number	Designation		Engines 113.940/941/942/943/944/945/946/948/960/961/962/963/964/965/966/967/968/969/971/980/981/982/984/986/987/988/990/991/992/993/995
BA15.10-P-1001-02A	Bolt securing knock sensor to cylinder block	Nm	20

COMMERCIALLY AVAILABLE TOOLS

Number	Designation
WH58.30-Z-1048-13A	STAR DIAGNOSIS diagnosis system, Compact Passenger Car	6511 1801 00