Remove/Install Left Or Right Rear Axle Speed Sensor - AR42.40-P-0820V

Model 171, 172 

Courtesy of MERCEDES-BENZ USA

Shown on Model 171.442 

Model 172 

Fig 1: Rear Axle Speed Sensor Components Location - Model 172

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Notes on self-locking nuts and Bolts		AH00.00-N-0001-01A
1	Switch off ignition
2	Remove left or right rear wheel		AP40.10-P-4050V
3	Detach left rear axle RPM sensor electrical connector (L6/3) or right rear axle RPM sensor electrical connector (L6/4) from rear axle electrical distributor electrical connector (X62/8)
4	Unclip electrical line of left rear-axle RPM sensor (L6/3) or right rear-axle RPM sensor (L6/4) from line bracket.	: Observe routing of electrical line.
5	Unscrew Screw (6a)	Model 171	*BA42.30-P-1001-02A
6	Pull left rear axle RPM sensor (L6/3) or right rear axle RPM sensor (L6/4) out off wheel carrier (7)	For Model 172, pull line bracket (2) away from wheel carrier (7).
7	Install in the reverse order
8	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A

REAR AXLE RPM SENSOR

Number	Designation		Model 171
BA42.30-P-1001-02A	Self-locking Bolt of rear axle RPM sensor to wheel carrier	Nm	8