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 12 002 Replacing positive battery cable (from battery to luggage compartment connector)
Necessary preliminary tasks:
- Remove LEFT LUGGAGE COMPARTMENT WHEEL ARCH TRIM
- Remove RIGHT LUGGAGE COMPARTMENT WHEEL ARCH TRIM
- Disconnect battery negative lead
Security version:
- Remove protective cover from distribution box/battery positive terminal (luggage compartment)
Lever out clips (1).
Release plastic nuts (2).
Remove underlay for luggage compartment floor panel (3).
Disconnect plug connection (1).
Disconnect plug connection (3) of IBS cable.
Unlock cable lug mounting and fold back.
Unscrew nut (2).
Tightening torque 61 21 4AZ .
Remove positive battery cable.
Unscrew nut (5).
Tightening torque 61 21 1AZ .
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.