Positive: Service and Repair

2008 BMW M5 (E60) V10-5.0L (S85)SECTION Service and Repair



61 12 002 - Replacing positive battery cable (from battery to luggage compartment connector)





Warning!
Observe safety instructions Technician Safety Information for handling vehicle battery.





Necessary preliminary tasks:
- Remove left luggage compartment wheel arch trim
- Remove right luggage compartment wheel arch trim
- Disconnect battery negative lead Disconnecting and Connecting 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 [1][2]Specifications.
Remove positive battery cable.
Unscrew nut (5).
Tightening torque 61 21 1AZ [1][2]Specifications.

Important!
Do not under any circumstances pull/lever safety battery terminal (4) off by force.

Pull safety battery terminal (4) upwards and remove.





Open cable lug mounting (1).
Release screw (2).
Tightening torque 61 12 3AZ [1][2]Battery Cable.
Unclip and remove positive battery cable (3).

Warning!
Risk of short circuits!
During installation, make sure that
- Cable lug mounting (1) is correctly seated on positive battery cable (3)
- Screw is properly connected.





Unclip positive battery cable (1) from cable guides (2) and remove.
RENDER: 1.0x

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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.