Handling Electrical System And Electronics Rep-Alg-RAGRP41-4104100 - V.3 (M4 2021-2023)
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.
1.0 Battery
- Explosion hazard in the vicinity of the battery during welding and grinding work. The battery must be REMOVED .
2.0 Control units
- Control units with visible mechanical damages and/or electrical damages caused by accidents must be replaced.
- The following risks exist when the battery is connected:
- Damage to control units resulting from welding work on the body or a line short circuit.
- Accidental activation of airbags during straightening work on the body.
Because of these risks the ground cable must be DISCONNECTED prior to all repair work.
- Control units are designed for a temperature of 65°C. The temperatures in a spray booth do not pose any problems. If a vehicle is in the spray booth at a displayed temperature of 80°C, the current temperature of the vehicle is ≤ 60°C (object temperature).
- Protect control units against the influence of heat >65°C (e.g. during welding and drying work with infrared beams or hot air blowers).
3.0 Electrical wires and wiring harnesses
- Protect electrical wires and wiring harnesses against damage (e.g. during straightening and grinding work).
- Protect electrical wiring and wiring harnesses against the influence of heat ≥65°C (e.g. during welding and drying work with infrared beams or hot air blowers).
- Do not kink electrical wiring.
4.0 Optical fibers
- Follow instructions for handling OPTICAL FIBERS .