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.
2017 BMW i3 BaseFACTORY OEM SERVICE PROCEDURE
61 12... Completely replace positive battery cable (range extender)
Necessary preliminary tasks:
- Disconnect NEGATIVE BATTERY LEAD
- Remove FRONT RIGHT WHEEL ARCH COVER
- Remove RIGHT REAR WHEEL ARCH COVER
- Remove TRIM PANEL FOR COVER ON RIGHT SIDE MEMBER
- Remove UPPER SERVICE CAP
Take off cover and release nut (1) from positive battery cable on electrical machine electronics.
Tightening torque 12 36 3AZ .
Release positive battery cable from brackets.
Unfasten cable strap.
NOTE:
Replace cable straps.
Factory Service Tools
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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.