Remove/install left front SAM control unit with fuse and relay box - AR54.21-P-1260CW

MODEL 172.4, 204, 207, 212, 218 

Shown on model 204.0 

Fig 1: Identifying Left Front SAM Control Unit With Fuse And Relay Box Remove/Install Components (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Left Front SAM Control Unit With Fuse And Relay Box Remove/Install Components (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Connect Star Diagnosis and perform initial startup of front SAM control unit with fuse and relay module (N10/1)	When replacing the front SAM control unit with fuse and relay module (N10/1).	AD00.00-P-2000-04A
2	Switch off ignition and remove transmitter key or KEYLESS-GO start/stop button from electronic ignition lock control unit	KEYLESS-GO start/stop button only on vehicles with code (889) Keyless-Go.
3.1	Unclip washer fluid hose (2) and remove cover (1)	Model 204, 207, 212, 218
3.2	Remove cap (1)	Model 172.4
4	Disconnect electrical connector (4) and guide electrical line out of fuse box
5	Remove bolts (arrows A) and guide out front SAM control unit with fuse and relay module (N10/1) until electrical connectors are accessible	Installation:  Ensure that no electrical lines are pinched otherwise there is the danger that the electrical system will be damaged. Remove the bolts (arrows A) using a 50 mm long Torx bit T20. The bolts (arrows A) remain in the housing of the front SAM control unit with fuse and relay module (N10/1). On model 204.9, 212, 218 press the water collector back into the area above the cover (1) until the front SAM control unit with fuse and relay module (N10/1) can be removed.
6	Disconnect all the electrical connectors from the front SAM control unit with fuse and relay module (N10/1), then remove the front SAM control unit with fuse and relay module (N10/1)	The terminal 30 conducting electrical connectors (5, 6, 7) must be disconnected first and contacted last in order to avoid short circuits. The number of electrical connectors depends on the vehicle equipment. Unlock the electrical connectors (5, 6) by pushing back the tabs using an extraction hook (arrows B, C) and disconnect. Pulling hook Installation:  The contact blade (8) must make contact fully forwards in the connector housing of the electrical connectors (5, 6).	Fig 3
7	Compare fuse and relay assignments of the new front SAM control unit with fuse and relay module (N10/1) with those of the old front SAM control unit with fuse and relay module (N10/1) and match the assignments if necessary	When replacing the front SAM control unit with fuse and relay module (N10/1).
8	Install electrical wiring harness for actuation of starter relay between connector 6I, pin 4 and connector 2I, pin 12 on the front SAM control unit with fuse and relay module (N10/1)	For model 204 with code (807) Model year 2007 or with code (808) Model year 2008 or with code (809) Model year 2009 When replacing the front SAM control unit with fuse and relay module (N10/1).
9	Install in the reverse order

Fig 3: Identifying Pulling Hook (140 589 02 33 00)

Courtesy of MERCEDES-BENZ USA