Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW2023M8 2D CONVERTIBLEREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTWIPER/WASHER SYSTEMSGENERAL ELECTRICAL SYSTEM -- REPAIR (F91, F92 & F93)61 35 CONTROL UNITS, MODULES61 35 278 REMOVING/INSTALLING BODY DOMAIN CONTROLLER (BDC) CONTROL UNIT (WITH HOLDER)INSTALL THE BDC CONTROL UNIT
2023 BMW M8 2D Convertible
Install the BDC control unit
2023 BMW M8 2D ConvertibleSECTION Install the BDC control unit
WARNING:
Work on components with requirements for a secure energy supply
Ensure proper function after a repair
Ensure proper function after a repair
- Lines are allowed to have only one repair area.
- Notices in the diagnostic system circuit diagrams must be observed.
Refer to ADDITIONAL INFORMATION .
- When components are replaced, the notices in the applicable BMW parts catalogue must be observed.
- Connect the connector of the positive battery cable (1)
to the BDC control unit (4)
.
The following order must be maintained:
- Install the connector of positive battery cable (1) in the arrow direction.
- Check that retaining lug (2) is correctly engaged in the detent.
- Close lock (3) in the arrow direction.
- Guide in the BDC control unit (1)
.
- Connect all connectors (1)
and lock.
- Maneuver BDC control unit (2) in the arrow direction.
- Connect all connectors (1)
and lock.
- Guide in cover (2) in the arrow direction.
- Check the detents (1)
.
- Tighten screw (2)
at cover (3)
.TIGHTENING TORQUE SPECIFICATION
Body Domain Controller (BDC) Sheet metal screw 4.8X16 tightening torque 1.2 Nm - Position the carpet (1) .
Follow-up work
- Refer to INSTALLING SIDE TRIM PANEL IN FOOTWELL ON RIGHT A-PILLAR .
- Refer to INSTALLING THE INNER DOOR SILL COVER STRIP .
- Refer to INSTALLING RIGHT FOOTWELL TRIM .
- Refer to ACTIVATING VEHICLE ELECTRICAL SYSTEM .
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.