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61 12 002 Replacing Positive Battery Cable (From Battery To Luggage Compartment Connector)

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Observe safety instructions  for handling vehicle battery. See 61 00 ... SAFETY INSTRUCTIONS FOR HANDLING VEHICLE BATTERY .

Necessary preliminary tasks: 

Release plastic nuts (1).

Release expansion rivet (3).

Lever floor panel at rear right (2) out of catch (4).

Fig 1: Identifying Expansion Rivet And Plastic Nuts
G04768410Courtesy of BMW OF NORTH AMERICA, INC.

Release nut (1) of safety battery terminal (2).

Tightening torque  . See GENERAL ELECTRICAL SYSTEM - TIGHTENING TORQUES -- ALPINA .

IMPORTANT: Do not under any circumstances pull/lever safety battery terminal off by force.

Detach safety battery terminal (2) towards top, lay to one side and secure.

Fig 2: Identifying Nut And Battery Terminal
G04768411Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug-in contact (1).

Unlock plug (2).

Disconnect cable from power module.

Fig 3: Identifying Plug-In Contact And Plug
G04768412Courtesy of BMW OF NORTH AMERICA, INC.

Unlock connector cover (4) at holder (3) and fold back.

Unclip battery positive lead (2) from cable guides (1).

Fig 4: Identifying Connector Cover, Holder And Cable Guides
G04768413Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (2).

Tightening torque  . See GENERAL ELECTRICAL SYSTEM - TIGHTENING TORQUES -- ALPINA .

Unclip cable lug mounting from positive battery cable (3) and remove.

WARNING: Risk of short circuits!
When installing, ensure:
  • Correct seating of cable lug mounting (1) on positive battery cable (3)
  • Correct screw connection
    Fig 5: Identifying Cable Lug Mounting On Positive Battery Cable
    G04768414Courtesy of BMW OF NORTH AMERICA, INC.