Remove/install airbag unit on the steering wheel up to model year 2009 - AR91.60-P-0660GZ

MODEL 164 

Fig 1: Identifying Airbag Unit On The Steering Wheel Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	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 safety glasses. Only pour battery acid into suitable and appropriately marked containers.	AS54.10-Z-0001-01A
	Notes on performing repair, body work and welding on vehicles with airbags and ETR units		AH91.00-P-0002-01M
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Assessment of airbag and belt tensioner units in accident vehicles		AH91.00-P-0006-01B
	Legal regulations on handling and storing airbags and emergency tensioning retractors		AH91.00-P-0004-01A
1.1	Disconnect jump-start sources or battery charger	If connected.
2	Move steering wheel (1) to straight-ahead position, disconnect battery ground line		AR54.10-P-0003GZ
3	Insert screwdriver bit into openings (arrows) at back of steering wheel (1) and remove screws from driver airbag unit (2)		*BA91.60-P-1003-01H
		Screwdriver bit	Fig 2
4	Lift driver airbag unit (2) from steering wheel (1) and disconnect electrical connector (3, 4)	Installation:  The electrical connector (3, 4) must audibly latch into place when being plugged in.
5	Remove driver airbag unit (2) from steering wheel (1)	If the driver airbag unit (2) is replaced, the defective unit must be disposed of properly. ↓
	Notes on disposing of airbag and emergency tensioning retractor units	All models	OS91.00-P-0001-01A
6	Install in the reverse order
7	Check restraint system using STAR DIAGNOSIS diagnostic system
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
		STAR DIAGNOSIS diagnosis system	*WH58.30-Z-1048-13A

AIRBAG

Number	Designation		Models 164.1/8
BA91.60-P-1003-01H	Bolt, airbag to steering wheel	Nm	8

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

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

COMMERCIALLY AVAILABLE TOOLS

Number	Designation
WH58.30-Z-1048-13A	STAR DIAGNOSIS diagnosis system, Compact Passenger Car	6511 1801 00