Remove/install airbag unit on steering wheel - AR91.60-P-0660P

MODEL 203, 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 

Shown on model 463 as of 01.7.02 

Fig 1: Identifying Steering Wheel Airbag Unit Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury  caused by performing testing or repair work on airbag or emergency tensioning retractor units.	Store airbag units with deployment side facing up; do not expose to temperatures greater than 100 °C. When working on these units, disconnect the power supply.	AS91.00-Z-0001-01A
	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
	Important instructions for performing repair, body work and welding on vehicles with airbags and emergency tensioning retractor units		AH91.00-P-0002-01M
	Legal requirements on handling and storing airbags and emergency tensioning retractor units		AH91.00-P-0004-01A
1	Fully extend steering wheel
2	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, model 463.247/248/254/270 up to 1.4.07 with code (ET2) Tele-Aid 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 1.4.07	AH82.95-P-0001-01GA
3	Disconnect battery ground line	Model 463.243/244/245/246/247/249/250/254/270/271/303/306/309/322/323/332/333/336/340/341/346 Model 463.236/248 except 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) Additional battery 100 Ah incl. cutoff relay 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	AR54.10-P-0003PM
	Notes on battery		AH54.10-P-0001-01A
4	Remove transmitter key	Model 203
5	Remove bolts (2)	Model 203
		Model 463	*BA91.60-P-1001-01A
			*BA91.60-P-1001-01B
			Figure
6	Lift driver airbag unit (1) from steering wheel
7	Lift locks (7)		Fig 3
8	Disconnect squib 2 electrical connector (3) and squib 1 electrical connector (4)		Fig 3
9	Disconnect multifunction steering wheel electrical connectors (5, 6)
10	Remove driver airbag unit (1)	Defective driver airbag units (1) must be made unusable in the proper manner and scrapped in an environmentally acceptable way. In all countries, the valid national and local statutory requirements must be observed.
	Notes on disposing of airbag and emergency tensioning retractor units		OS91.00-P-0001-01A
	Assessment of airbag and belt tensioner units in accident vehicles		AH91.00-P-0006-01B
11	Install in the reverse order
12	Deactivate service mode in Telematic Alarm Identification on Demand	Only on model 463.243/244/245/250/309/322/323/332/333 with code (ET2) Tele-Aid car telephone emergency call system, model 463.247/248/254/270 up to 1.4.07 with code (ET2) Tele-Aid 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 1.4.07	AH82.95-P-0001-01GA
13	Read out fault memory and erase	Stored faults which may be caused by removed cables or by a simulation, must 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
14	Perform basic programming	Model 463	AR00.19-P-0200P

Fig 2: Identifying Screwdriver Bit (126 589 00 10 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Removal Lever (203 589 04 33 00)

Courtesy of MERCEDES-BENZ USA