Remove upper seat belt on rear center

WARNING: Pyrotechnic components.
Danger! Life-threatening injuries!

All work on pyrotechnic parts may be carried out by technically experienced and appropriately trained personnel only.
Replace any damaged part or ones that have been dropped.
For additional information see: 72 00 SAFETY REGULATIONS on handling components with gas generators.

Preliminary works

Deactivate the 48 v ELECTRICAL SYSTEM .
Disconnect all battery EARTH LEADS .
Remove both c-pillar trim PANELS
Remove left and right backrest SIDE SECTION .
Remove rear SEAT and rear seat backrest (not in case of SA465 through-loading system)
Remove the storage shelf TRIM PANEL .

Loosen screw (1).
Feed the inertia reel (2) out towards the front top.

Courtesy of BMW OF NORTH AMERICA, INC.