72 11 041 Removing and installing/replacing front left or right lower belt fitting (seat belt pretensioner) (convertible)

WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 328xi, 2012 BMW 328i, and 2011 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove front seat

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

Improper handling can lead to triggering of the pyrotechnical seat belt tensioner or side airbag, resulting in injuries.

Switch off ignition!

Installation:

Microencapsulated screws (Loctite) must be replaced and may not be reused
Screw connection must be completed within 20 minutes (start of curing)
Microencapsulated screws must not be retightened
Clean thread of nut beforehand in event of repeated use

IMPORTANT: Ensure exact cable routing of airbag wiring harness and belt tensioner.

Release connector housing (1) from bracket on seat mechanism.

Unclip cable (3) from seat mechanism.

Cut open cable tie (2).

Unlock plug connection and pull all plugs out of plug housing (1).

Removing wiring harness.

Fig 1: Identifying Connector Housing, Cable, And Cable Tie

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Always feed in cable tie (1) at narrow end of plug housing in direction of arrow.

Cables must be secured with insulation under cable tie.

Firmly tighten cable tie (1) to relieve strain. It must not be possible to move the cable.

Make sure plug (2) is correctly locked in plug housing (3).

Fig 2: Feeding In Cable Tie At Narrow End Of Plug Housing In Direction Of Arrow

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque: see 6AZ in 72 11 SEAT BELTS .

Remove belt pretensioner (3).

Installation:

Replace screw (1).

Seat belt pretensioner (3) is coded to prevent incorrect installation (2).

Fig 3: Removing Belt Pretensioner

Courtesy of BMW OF NORTH AMERICA, INC.