Remove the BDC control unit
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.
Preliminary work
- Refer to DEACTIVATING THE 48 V ELECTRICAL SYSTEM .
- Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
- Refer to REMOVING RIGHT FOOTWELL TRIM .
- Refer to REMOVING DOOR SILL COVER STRIP, INTERIOR RIGHT .
- Refer to REMOVING THE SIDE TRIM PANEL IN THE FOOTWELL AT THE RIGHT-HAND A-PILLAR .
- Unlock detents (1) and feed out the power distribution box (2) downward.
- Fold the carpet (1) to the side.
- Loosen the detents (2).
- Guide cover (3) out in arrow direction.
- Unlock all plug connections and disconnect.
- Release detent (1).
- Feed the BDC control unit (2) out of the bracket in direction of arrow (3).