Remove/install passenger airbag unit - AR91.60-P-0680MCU

MODEL 451.3/4 

Fig 1: Identifying Passenger 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 ETR units		AH91.00-P-0002-01SM
	Legal requirements on handling and storing airbags and emergency tensioning retractor units		AH91.00-P-0004-01A
1	Disconnect ground line of battery		AR54.10-P-0003MCC
2	Remove trim on passenger-side		AR68.10-P-1502MCU
3	Detach electrical connector (yellow) (2) and electrical connector (green) (3) on the front passenger airbag unit (1)
4	Remove screws (4) from passenger airbag (1)		*BA91.60-P-1001-01C
5	Unscrew nuts (5) from front passenger airbag (1) and remove front passenger airbag (1) downward.	No more bolted connections may be opened. Do not disassemble front passenger airbag (1), otherwise it must be replaced. Observe tightening sequence (A to D) of nuts (5). If the front passenger airbag unit (1) is being replaced, the faulty front passenger airbag unit (1) must be properly disposed of. Refer to: ↓	*BA91.60-P-1004-01C
		Notes on disposing of airbag and emergency tensioning retractor units	OS91.00-P-0001-01A
6	Install in the reverse order
7	Check supplemental restraint system using STAR DIAGNOSIS	When installing new front passenger airbag unit (1).
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04MCC

AIRBAG

Number	Designation		Model 451.3	Model 451.4
BA91.60-P-1001-01C	Bolt of front passenger airbag unit to instrument panel mounting	Nm	10	10
BA91.60-P-1004-01C	Nut, front passenger airbag unit to instrument panel	Nm	2	2