72 12 045 Removing And Installing/Replacing Left Or Right AHPS2 Head Airbag

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2008 BMW 750i, 2008 BMW 750Li, 2007 BMW 750i, 2007 BMW 750Li, and 2006 BMW 750i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

Read and comply with safety regulations for handling airbag modules and pyrotechnical belt tensioners.

See SAFETY REGULATIONS FOR HANDLING COMPONENTS WITH GAS GENERATORS and NOTES ON SCRAPPING VEHICLES WITH GAS GENERATORS (AIRBAG SYSTEM) .

Incorrect handling can activate head airbag and cause injury.

Necessary preliminary tasks:

Disconnect negative lead from battery.
Follow instructions for disconnecting and connecting battery.
Remove roofliner. See REMOVING AND INSTALLING/REPLACING HEADLINER (WITHOUT SLIDE/TILT SUNROOF) or REMOVING AND INSTALLING / REPLACING HEADLINER (WITH SLIDE/TILT SUNROOF) .

Fig 1: Identifying Left Or Right AHPS2 Head Airbag
Courtesy of BMW OF NORTH AMERICA, INC.

Release screws of holders (2).

Installation:

Tightening torque: 72 12 03AZ . See AIRBAG MODULES for specs.

Pull holder (2) out of body.

NOTE:

Retainers on holder may break off. These retainers serve as an installation aid during series production and are not important for repairs.

Release screws (3).

Installation:

Tightening torque: 72 12 04AZ . See AIRBAG MODULES for specs.

Remove AHPS2 (1).

Pull felt strip (1) off gas generator.

Installation:

Replace felt strip (1) in event of damage or poor adhesion.

Unlock plug (2) on gas generator of AHPS2 head airbag and detach.

Fig 2: Identifying Felt Strip And Plug

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE:

To release nut (1), use joint socket 10 A/F, drive 1/4".

Nuts can easily drop down after they have been released. If necessary, place some butyl in socket.

Insert joint socket from below between gas generator and instrument panel trim and fit on nut (1).

Fig 3: Identifying Instrument Panel Trim And Fit Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Release nuts (1 and 2).

Pull gas generator (3) out of mounting.

Fig 4: Identifying Gas Generator And Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace self-locking nuts.

Initially tighten nut (1) at threaded pin and turn back two turns.

Insert gas generator in mounting (2).

Fig 5: Identifying Gas Generator Into Mounting

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Install gas generator (2) with slotted section of holder below nut (1) on threaded pin.

Turn gas generator (2) in direction of rotation until holder with opening (3) slides over threaded pin.

Screw in second nut partially.

Set tightening torque of 8 Nm on torque wrench.

Tighten down both nuts.

Nut (1) is tightened to lower torque due to joint socket. This torque is nevertheless sufficient for mounting the gas generator securely.

If necessary, prime scratches made on body.

Fig 6: Turning Gas Generator Holder With Opening Slides

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE:

View of retaining screw with anchor fitting of AHPS2 head airbag:

Anchor fitting, AHPS2 head airbag
Lock washer
Retaining screw

Fig 7: Identifying AHPS1 Head Airbag Lock Washer And Retaining Screw

Courtesy of BMW OF NORTH AMERICA, INC.