12 42 500 Replacing the positive battery cable between the starter motor, alternator and positive battery connection point (N54, N55)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary work:

Read out fault memory of DME control unit.
Switch off ignition.
Disconnect BATTERY NEGATIVE LEAD .
Remove INTAKE PLENUM .

Open cover.

Release nut, remove positive battery cable (1) from positive battery connection point.

Tightening torque: 12 42 3AZ .

Fig 1: Identifying Positive Battery Cable

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut and remove positive battery cable (1) from alternator.

Tightening torque: 12 42 1AZ .

Fig 2: Identifying Battery Positive Lead From Alternator

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip positive battery cable (1) from holder (2).

Fig 3: Identifying Positive Battery Cable From Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten nut.

Tightening torque: 12 42 2AZ .

Detach positive battery cable (2) from starter motor and remove.

Fig 4: Identifying Plug And Battery Positive Lead

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Reassemble the vehicle.
Check stored fault messages.
Delete fault memory.