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

WARNING: This page is about a different car, the 2011 Mercedes-Benz C300, 2010 Mercedes-Benz C300, 2009 Mercedes-Benz C300, and 2008 Mercedes-Benz C300. However, it is still accessible from the selected car via links, so may be relevant.

MODEL 204.0/2 up to model year 2012/YoM 11

MODEL 204.9

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
	Notes on performing repair, body work and welding on vehicles with airbags or emergency tensioning retractor units		AH91.00-P-0002-01M
	Assessment of airbag and emergency tensioning retractor units in accident vehicles		AH91.00-P-0006-01B
	Legal regulations 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).	*BA91.60-P-1005-01M
		Screwdriver bit	Fig 2
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 paddles.
	Coding on coupling housing changed		BT54.18-P-0002-01CW
6	Disconnect electrical connector (6)
7	Release lock tabs (4) and disconnect electrical connectors (5)	Never disconnect electrical connectors (3) with electrical connectors (5) connected, because otherwise the driver airbag unit (1) may be triggered.
		Removal lever Installation: The electrical connectors (5) must audibly engage when being plugged onto driver airbag squib 1 (R12/13) and driver airbag squib 2 (R12/14).	Fig 3
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.
	Notes on disposing of airbag and emergency tensioning retractor units		OS91.00-P-0001-01A
9	Install in the reverse order
10	Check supplemental restraint system (SRS) with STAR DIAGNOSIS	After replacing the driver airbag unit (1).
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A

AIRBAG

Number	Designation		Model 204.0/2/9
BA91.60-P-1005-01M	Bolt, airbag to steering wheel	Nm	7

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