Remove/install rear SAM control unit with fuse and relay box - AR54.21-P-1259RK

MODEL 231 

Fig 1: Rear SAM Control Unit With Fuse And Relay Box Remove/Install Components (1 Of 3)

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Fig 2: Rear SAM Control Unit With Fuse And Relay Box Remove/Install Components (2 Of 3)

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Fig 3: Rear SAM Control Unit With Fuse And Relay Box Remove/Install Components (3 Of 3)

Courtesy of MERCEDES-BENZ USA

	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Connect Star Diagnosis and perform initial startup of rear SAM control unit with fuse and relay module (N10/2) Connect STAR DIAGNOSIS and read out fault memory	When replacing the rear SAM control unit with fuse and relay module (N10/2).	AD00.00-P-2000-04A
2	Switch off ignition and remove transmitter key (A8/1) or KEYLESS-GO start/stop button (S2/3) from electronic ignition lock control unit (N73)	KEYLESS-GO start/stop button (S2/3) only with code (889) KEYLESS-GO.
3	Remove right side paneling in rear		AR68.30-P-4780RK
4	Remove frame (3)	Removal:  Carefully unclip the frame (3) upward.
5	Unscrew bolts (1) and remove bracket (2)
6	Unscrew nut (4)
7	Lift out rear SAM control unit with fuse and relay module (N10/2)	Make sure that electrical lines are not pinched. The electrical system can otherwise be damaged.
8	Disconnect electrical connections (8, 9)	The circuit 30 electrical connectors (8, 9) must be disconnected first and connected last. Short circuits can otherwise occur. To do so, unlock and disconnect the electrical connectors (8, 9) by pushing back the tabs using an extraction hook (arrows D, E). The contact blade (10) must make contact all the way forward in the connector housing of the electrical connectors (8, 9). Extraction hook	Fig 4
9	Disconnect remaining electrical connections from rear SAM control unit with fuse and relay module (N10/2)	The number of electrical connectors depends on the vehicle equipment. Pay attention to the installation position; this is indicated by color and mechanical coding.
10	Unclip fuse holder (7) from rear SAM control unit with fuse and relay module (N10/2) (arrows C) and remove rear SAM control unit with fuse and relay module (N10/2)	The number of fuse holders (7) is dependent on the vehicle equipment.
11	Install in the reverse order

Fig 4: Identifying Extraction Hook (140 589 02 33 00)

Courtesy of MERCEDES-BENZ USA