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 36 014 Removing and refitting/replacing electric motor ECU
The following points must be strictly observed prior to starting work:
- DE-ENERGIZE THE HIGH-VOLTAGE SYSTEM
- Observe SAFETY INFORMATION for working with hybrid cars.
- OBSERVE NOTES CONCERNING EARTH BONDING SCREW CONNECTIONS
Necessary preliminary tasks:
- CLAMP OFF BATTERY LEAD FROM NEGATIVE TERMINALNOTE: Before disconnecting the battery cable, it must be ensured that the vehicle goes to sleep. Observe a waiting period of at least 2 minutes.
- Remove REAR LEFT UNDERBODY PROTECTION
- Open sealing cap of coolant expansion tank (high-voltage cooling circuit)
Detach high-voltage cables (1) from protective plate (2).
Detach positive battery cable (3) from protective plate (2).
Unscrew nuts (4).
Tightening torque 12 36 1AZ .
Release screws (5).
Tightening torque 12 36 1AZ .
Unclip coolant hose (6) from holder.
Feed out protective plate (2).
Installation note:
Make sure ventilation duct (7) is correctly seated. Do not pinch ventilation duct (7).
Coolant emerges when coolant lines are detached.
Catch and dispose of escaping coolant.
Observe country-specific waste disposal regulations.
Release and disconnect coolant hoses (1).
Unlock and disconnect high-voltage plug connection (2).
Unfasten plug connection (3) and disconnect.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.