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.
12 63 586 Replacing power distribution module (N55 Hybrid)
The following points must be strictly observed prior to starting work :
- Observe SAFETY INFORMATION for handling hybrid cars.
Necessary preliminary work:
- Switch off ignition.
- Disconnect battery negative lead . See 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD or 61 20 900 DISCONNECTING AND CONNECTING BATTERY EARTH LEAD .
- Disconnect BATTERY EARTH LEAD of auxiliary battery.
Release expanding rivets (1) and remove cover (2).
Installation note:
Replace damaged expanding rivets.
Holder of cover (2) must snap into place in suspension cross-brace during installation.
Remove cover (2).
Release nut beneath it and set positive battery cable aside.
Unlock and pull off all connectors from power distribution module.
Release lock (3) in direction of arrow.
Feed out and remove power distribution module.
Reassemble the vehicle.
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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.