Remove/install left or right rear axle speed sensor - AR42.40-P-0820RT

MODELS 251 

Fig 1: Identifying Left/Right Rear Axle Speed Sensor Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/Install
	Information on preventing damage to electronic components due to electrostatic discharge	All models	AH54.00-P-0001-01A
1	Switch off ignition and remove the transmitter key from the EIS [EZS] control	On vehicles with Keyless Go, code 889: unit Press keyless go start/stop button repeatedly until ignition is switched off Remove transmitter key from vehicle and store it in a location beyond its transmission range (at least 2 m).
	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between the columns of the lifting platform and position the four support plates at the lifting platform support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
2	Raise vehicle with lifting platform		AR00.60-P-1000RT
3	Remove left rear wheel or right rear wheel
	Remove/install wheels, rotate if necessary		AP40.10-P-4050RT
4	Remove screw (3)	Fit new bolt (3).
	Notes on self-locking nuts and bolts	All models	AH00.00-N-0001-01A
			*BA42.30-P-1001-02H
5	Pull the left rear RPM sensor (L6/3) or right rear RPM sensor (L6/4) out of the wheel carrier
6	Unclip line for left rear RPM sensor or line for right rear RPM sensor out of brackets (1)	Make sure that line for left rear RPM sensor or line for right rear RPM sensor is routed correctly.
7	Disconnect electric connector (2)
8	Install in the reverse order
9	Read out fault memory and erase	STAR DIAGNOSIS system	*WH58.30-Z-1048-13A
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A

REAR AXLE RPM SENSOR

Number	Designation		Type 251
BA42.30-P-1001-02H	Self-locking bolt of rear axle RPM sensor to wheel carrier	Nm	8

COMMERCIALLY AVAILABLE TOOLS

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