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
Release plastic nuts (1).
Remove underlay for floor panel at rear left (2).
Remove underlay for luggage compartment floor panel (3).
Disconnect battery negative lead (1).
Disconnect plug connection (2) of one-pin IBS cable (3).
Release nut (5) of safety battery terminal (4), tightening torque, refer to 61 21 1AZ in GENERAL ELECTRICAL SYSTEM - TIGHTENING TORQUES - 645CI .
Detach safety battery terminal (4) towards top, lay to one side and secure.
Unlock cable lug mounting (1) and fold back.
Unscrew bolt (2).
Unclip cable lug mounting (1) from positive battery cable (3) and remove.
- Correct seating of cable lug mounting (1) on positive battery cable (3)
- Correct screw connection
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.