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.
61 12 013 Replacing battery negative lead
Read and comply with notes and instructions on INTELLIGENT BATTERY SENSOR .
Necessary preliminary tasks:
- Partially remove LUGGAGE COMPARTMENT WHEEL ARCH TRIM ON RIGHT
Slacken nut (1) on negative battery terminal.
Tightening torque 61 21 1AZ .
Detach battery negative lead with intelligent battery sensor (IBS) in upward direction, lay to one side and secure.
Disconnect plug connection (2).
Remove nut (1) and battery negative lead (2).
Tightening torque 61 21 6AZ .
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.