Installing the rear upper seat belt
WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Airbag unit.
Danger! Immobilization period-threatening injuries!
Danger! Immobilization period-threatening injuries!
- Before performing any work on the airbag, always disconnect the battery ground lead from the battery.
- Airbag unit may only be set down with the cushion (airbag itself) facing upwards.
- For additional information see: SAFETY REGULATIONS FOR HANDLING COMPONENTS WITH GAS GENERATORS .
WARNING:
Pyrotechnic components.
Danger! Immobilization period-threatening injuries!
Danger! Immobilization period-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: SAFETY REGULATIONS FOR HANDLING COMPONENTS WITH GAS GENERATORS .
NOTE:
TECHNICAL INFORMATION
Clean all threaded belt connections with micro-encapsulated outer and internal threads.
Shavings or other debris must not remain in the components.
If a microencapsulated screw is reused, it must be coated with the following screw locking agent: Loctite 243, medium strength.
The screw connection must be completed within 10 minutes as hardening begins after this period.
Clean all threaded belt connections with micro-encapsulated outer and internal threads.
Shavings or other debris must not remain in the components.
If a microencapsulated screw is reused, it must be coated with the following screw locking agent: Loctite 243, medium strength.
The screw connection must be completed within 10 minutes as hardening begins after this period.
- Feed the seat belt retractor (1) into the foam part (2).
- Feed in and position the seat belt retractor with the foam part (4).
- Replace the screw (3).
Parts: Screw
- Tighten down screw (3).
TIGHTENING TORQUES SPECIFICATION
| Rear seat belt retractor to body | ||
| M10 Replace screw. |
Tightening torque | 42 Nm |
- Tighten the screws (2).
TIGHTENING TORQUES SPECIFICATION
| Additional connection of rear seat belt retractor to body | ||
| Hexagon screw M6 | Tightening torque | 4.5 Nm |
- Connect connectors (1) and lock.
Follow-up work
- Refer to INSTALLING THE TRIM PANEL FOR THE REAR SHELF .
- Refer to INSTALLING LEFT AND RIGHT REAR SIDE TRIM PANEL .
- Refer to INSTALLING THE LEFT AND RIGHT C-PILLAR TRIM PANEL .
- Refer to INSTALLING THE LEFT AND RIGHT BACKREST SIDE SECTION .
- Refer to INSTALLING THE REAR SEAT .
- Refer to CONNECTING ALL BATTERY GROUND LEADS .
- Refer to ACTIVATING THE 48 V ELECTRICAL SYSTEM .