Remove/install SAM control unit with fuse and relay box, right front - AR54.21-P-1261GM

MODEL 463.202/222/236/237/243/244/245/246/247/248/249/250/254/270/271/303/306/309/322/323/332/333/336/340/341/346

Illustrated on model 463.333

Fig 1: Identifying SAM Control Unit Remove/Install Components (Right Front)

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Activate service mode in Telematic Alarm Identification on Demand (emergency call system) (TELE AID)	Only on model 463.243/244/245/250/309/322/323/332/333 with code (ET2) Tele-Aid -car telephone emergency call system, 463.247/248/254/270 up to 1.04.07 with code (ET2) TeleAid car telephone emergency call system	AR82.95-P-0005-03GR
	Notes regarding the Tele-Aid emergency call system	Model 463.243/244/245/250/309/322/323/332/333, Model 463.247/248/254/270 up to 1.04.07	AH82.95-P-0001-01GA
	Risk of explosion caused by oxyhydrogen gas. Risk of poisoning and caustic burns caused by swallowing battery acid. Risk of injury caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries	No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers.	AS54.10-Z-0001-01A
2	Disconnect battery ground line	Except model 463.236/248 with code (979) Special protection version.	AR54.10-P-0003G
		Model 463.236/248 with code (979) Special protection version, with code (ZS6) Special protection version FB6, with code (E26) 100 Ah additional battery incl. cutoff relay,	AR54.10-P-0003PM
		Model 463.236/248 with code (979) Special protection version, with code (ZS7) Special protection version FB7, with code (E26) Additional battery 100 Ah incl. cutoff relay
	Notes on battery	All models	AH54.10-P-0001-01A
3	Remove glove compartment	Required for routing cables correctly.	AR68.10-P-1400GM
4	Remove cover below dashboard		AR68.10-P-1520GM
5	Unscrew nut (1)
6	Unscrew nut (2)
7	Remove front signal acquisition and actuation module (SAM) (N10/1)	Pull down and out of the dashboard. Installation: Ensure the cables are correctly routed otherwise this may cause problems when installing.
8	Disconnect electrical connectors (3, 4) from front signal acquisition and actuation module (SAM) (N10/1)	Mark the installation position of the electrical connectors (3, 4). For disconnecting the electrical connector (3, 4) see: ↓
		Disconnecting lines from control units and fuse and relay boxes Installation: Note marking. Connect the electrical connectors (3, 4); see: ↓	AR54.18-P-1261-01P
		Connecting cables to control units and fuse and relay boxes.	AR54.18-P-1261-02P
9	Install in the reverse order
10	Deactivate service mode in TELE AID	Only on model 463.243/244/245/250/309/322/323/332/333 with code (ET2) Tele-Aid -car telephone emergency call system, 463.247/248/254/270 up to 1.04.07 with code (ET2) TeleAid car telephone emergency call system	AR82.95-P-0005-03GR
	Notes regarding the Tele-Aid emergency call system	Model 463.243/244/245/250/309/322/323/332/333, Model 463.247/248/254/270 up to 1.04.07	AH82.95-P-0001-01GA
11	Read out fault memory and erase	STAR DIAGNOSIS Stored faults which can result from cables being disconnected or from simulation during removal and installation or test work, have to be processed and erased in the fault memories after completing the work.
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
12	Perform basic programming		AR00.19-P-0200P