Removing and installing combination switch - AR54.25-P-2800GS

MODEL 463.243/246 up to 31.5.04, 463.244/245/247/248/249/250/254/309/322/323/332/333 as of 1.7.02 up to 31.5.04 

Fig 1: Identifying Combination Switch Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Removal/installation
1.1	Activate Service mode in Tele-Aid emergency call system	Only for models 463.243/244/245/247/248/250/254/309/322/323/332/333 with TeleAid -car telephone emergency call system, code ET2	AR82.95-P-0005-03GR
	Notes regarding the Tele-Aid emergency call system		AH82.95-P-0001-01GA
2	Connect no load current retention unit		AR54.10-P-1030-07I
			*WH58.30-Z-1012-09A
	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 safety glasses. Pour battery acid only into suitable and appropriately marked containers.	AS54.10-Z-0001-01A
3	Disconnect battery ground cable	All models except 463.248 with special protection version, code 979	AR54.10-P-0003G
		Model 463.248 with special protection version code 979	AR54.10-P-0003PM
	Notes on battery	All models	AH54.10-P-0001-01A
4	Removing jacket tube module (N80)		AR54.25-P-2802GS
5	Remove combination switch (S4) from steering column module (N80)
6	Install in the reverse order
7.1	Deactivate service mode in TELE AID emergency call system	Only for models 463.243/244/245/247/248/250/254/309/322/323/332/333 with TeleAid -car telephone emergency call system, code	AR82.95-P-0005-03GR
	Notes regarding the Tele-Aid emergency call system		AH82.95-P-0001-01GA
8	Read out fault memory and erase	STAR DIAGNOSIS Stored faults which can result from lines 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
			*WH58.30-Z-1048-13A
9	Perform basic programming		AR00.19-P-0200P
	Check
10	Perform a function test	Check all functions of the multifunction steering wheel and switch on the jacket tube.
11	Conduct a road test	Check the turn signal indicator reset during a road test: The correct turn signal indicator reset is no longer guaranteed if the steering wheel is offset by more than one tooth. Airbag indicator lamp: The SRS indicator lamp must not light up at full steering angle in both directions. Position of steering wheel: If the steering wheel is not on straight, offset it by a maximum of one tooth, in the event of a larger deviation: ↓
		Check and adjust toe on front axle	AR40.20-P-0323GG