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

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2015 BMW 740i, 2015 BMW 740Li xDrive, 2015 BMW 740Li, 2014 BMW 740i, and 2014 BMW 740Li xDrive. 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 units
Switch off ignition
Disconnect BATTERY NEGATIVE LEAD
Remove INTAKE PLENUM

Fold back cover (1).

Release nut underneath. Remove positive battery cable (2) from positive battery connection point.

Tightening torque: 12 42 3AZ .

Fig 1: Identifying Cover And Positive Battery Cable

G08469644

Courtesy of BMW OF NORTH AMERICA, INC.

Remove protective cap (2) and release nut underneath.

Tightening torque: 12 42 1AZ .

Disconnect positive battery cable from alternator.

Fig 2: Identifying Alternator Connector And Protective Cap

G09875409

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 3: Identifying Battery Positive Lead And Holder

G04755156

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut (2) on starter motor only .

Tightening torque, 12 42 2AZ .

Remove positive battery cable from starter motor and pull out.

Fig 4: Identifying Positive Battery Cable Connector, Nuts And Screws

G06905177

Courtesy of BMW OF NORTH AMERICA, INC.

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