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

MODEL 204.0/2 up to model year 2012/AEJ11 

MODEL 204.9 up to model year 2013/AEJ12 

Fig 1: Identifying Steering Wheel Airbag Unit Remove/Install 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
	Notes on performing repair, body work and welding on vehicles with airbags and RTE units		AH91.00-P-0002-01M
	Assessment of airbag and belt tensioner units in accident vehicles		AH91.00-P-0006-01B
	Legal requirements on handling and storing airbags and emergency tensioning retractor units		AH91.00-P-0004-01A
1	Place steering column in the central height position
2	Disconnect ground line for on-board electrical system battery (G1)		AR54.10-P-0003CW
3	Insert screwdriver bit into openings (arrows) on steering wheel (2) and unscrew bolts on driver sidebag unit (1)	The screws remain on the steering wheel (2).
		Screw/bolt, airbag to steering wheel	*BA91.60-P-1005-01M
		Screwdriver bit	Fig 3
4	Remove driver airbag unit (1) far enough from steering wheel (2) so that electrical connectors (5, 6, 7) are accessible
5	Disconnect electrical connectors (7)	Only with code (428) Steering wheel shift paddle
			BT54.18-P-0002-01CW
6	Disconnect electrical connector (6)
7	Release lock tabs (4) and disconnect electrical connectors (5)	Never disconnect electrical connector (3) with connected electrical connectors (5). Otherwise the driver airbag unit (1) may be deployed. Electrical connectors (5) must audibly engage when being connected to driver airbag squib 1 (R12/13) and driver airbag squib 2 (R12/14).
		Removal lever	Fig 2
8	Disconnect driver airbag unit (1) from steering wheel (2)	If driver airbag unit (1) is being replaced, the defective driver airbag unit (1) must be disposed of properly.
9	Install in the reverse order
10	Check supplemental restraint system (SRS) with STAR DIAGNOSIS
			AD00.00-P-2000-04A
		After replacing driver airbag unit (1).

Fig 2: Identifying Removal Lever (203 589 04 33 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Screwdriver Bit (126 589 00 10 00)

Courtesy of MERCEDES-BENZ USA