12 42 500 Replacing positive battery cable between starter motor, alternator and positive battery connection point (N20)

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Necessary preliminary tasks:

Switch off ignition.
Disconnect BATTERY EARTH LEAD .
Remove INTAKE PLENUM .

Fold back cover (1).

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

Tightening torque 12 42 3AZ .

Fig 1: Identifying Positive Battery Cable Lead And Cover

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Unclip positive battery cable (1) from brackets (2) at rear of engine block.

Fig 2: Identifying Positive Battery Cable And Brackets

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Remove protective cap (1) and release nut underneath.

Tightening torque: 12 42 1AZ .

Release nut (2) on starter.

Tightening torque 12 42 2AZ .

Disconnect positive battery cable (3) from alternator and starter motor. Feed out positive battery cable (3) and remove.

Fig 3: Identifying Protective Cap, Positive Battery Cable And Nut

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Reassemble the vehicle.
Check stored fault messages.
Clear diagnostic fault entries from fault memory.