Remove SAM control unit with fuse and relay box, left front - AR54.21-P-1260V

MODEL 171.4 

Fig 1: Identifying SAM Control Unit With Fuse And Relay Box Left Front Components

Courtesy of MERCEDES-BENZ USA

	Remove/Install
1.1	Connect STAR DIAGNOSIS and store basic data from driver-side SAM control unit with fuse and relay module (N10/1) temporarily in STAR DIAGNOSIS.	When replacing the driver-side SAM control unit with fuse and relay module (N10/1) Installation:  transfer temporarily stored basic data to the new driver-side SAM control unit with fuse and relay module. N10/1
	Connect STAR DIAGNOSIS, interrogate fault memory		AD00.00-P-2000-04A
		Diagnosis system STAR DIAGNOSIS	*WH58.30-Z-1048-13A
2	Disconnect ground cable of battery		AR54.10-P-0003V
3	Unlock cover (1) and remove from fuse and relay box (2)
4	Disconnect electrical connectors (3)	Installation:  Observe form codings.
5	Unscrew bolts (4) and remove driver-side SAM control unit with fuse and relay module (N10/1) from the fuse and relay box (2)	Until the electrical connectors on the underside of the driver-side SAM control unit with fuse and relay module (N10/1) are accessible. Installation:  Pay attention to line routing.
6	Unplug all electrical connectors from driver-side SAM control unit with fuse and relay module (N10/1).	Installation:  Observe form codings.
7	Remove driver-side SAM control unit with fuse and relay module (N10/1)
8.1	Check the fuse and relay assignment of the driver-side SAM control unit with fuse and relay module (N10/1)	When replacing the driver-side SAM control unit with fuse and relay module (N10/1).
	Fuse assignment of fuse and relay box in engine compartment, left		GF54.15-P-1256-03SK
	Relay assignment of fuse and relay box in engine compartment, left		GF54.15-P-1257-03SK
9	Install in the reverse order

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