Remove/Install Left Front Or Right RPM Sensor - AR42.30-P-0712CW

Model 172, 204 

Shown on Model 204 

Fig 1: Front RPM Sensors Components Location - Model 172 (Shown On Model 204)

Courtesy of MERCEDES-BENZ USA

	Notes on self-locking nuts and Bolts		AH00.00-N-0001-01A
	Remove/Install
1	Switch off ignition
2	Remove left or right wheel and tire assembly
		Model 172	AP40.10-P-4050V
		Model 204	AP40.10-P-4050CW
3.1	Detach fender liner (1) on rear area of fender far enough to gain access to the electrical connection (2)	Model 172	AR88.10-P-1300W
3.2	Remove rear section from fender liner (1) in fender	Model 204
4	Disconnect electrical connector (2)	Model 172	AR33.10-P-0100-06V
		Model 204	AR33.10-P-0100-06CW
5	Unclip electrical line of left front axle RPM sensor (L6/1) or right front axle RPM sensor (L6/2) from line bracket (3)	Pay attention to installation of lines.
6	Remove cable tie (4) from suspension strut (5)	Model 204 (except 204.9) with ENGINE 271, 272, 274, 276, 642, 651 Pay attention to installation position. Pliers	Fig 2
7	Remove Bolt (6) and pull left front axle RPM sensor (L6/1) or right front axle RPM sensor (L6/2) out of steering knuckle (7)	: Model 172, 204 (except 204.9) Replace seal on left front axle RPM sensor (L6/1) or right front axle RPM sensor (L6/2). Otherwise, water can enter and damage the wheel bearing.
8	Install in the reverse order
9	Connect diagnostic system and read out fault memory
			AD00.00-P-2000-04A

Fig 2: Identifying Pliers (164 589 01 37 00)

Courtesy of MERCEDES-BENZ USA