Remove/Install Left Rear Knock Sensor - AR15.12-S-2187EG

Model 447, 448 with engine 274 

Fig 1: Left Rear Knock Sensor Components Location - Model 447 With Engine 274

Courtesy of MERCEDES-BENZ USA

	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
	Risk of injury  . Moving parts can pinch, crush or, in extreme cases even sever extremities.	No parts of the body or limbs should be within the operating area of mechanical components when moving components.	AS00.00-Z-0009-01A
	Remove/install
1	Raise vehicle		AR00.60-S-1000E
2	Disconnect electrical connection (1)
3	Remove knock sensor 2 (A16/9)	Remove screw/bolt (2) to do this. Bolt, knock sensor to crankcase	*BA15.10-Z-1001-02KOC
4	Install in the reverse order
5	Read out fault memory with diagnostic system
	Connect STAR DIAGNOSIS and read out fault memory	Clear existing errors.	AD00.00-S-2000-04E
	Check
	Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
6	Carry out an engine test run

KNOCK SENSORS

Number	Designation		Engine 274 in model 447, 448
BA15.10-Z-1001-02KOC	Bolt, knock sensor to crankcase	Nm	20