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Home >> BMW >> 2016 >> 535d >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Engine Electrical System - Repair >> Starter Lead >> 12 42 500 Replacing positive battery cable between starter motor, alternator and positive battery connection point (N20)

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

Necessary preliminary tasks: 

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
G08469644Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 2: Identifying Positive Battery Cable And Brackets
G09914286Courtesy of BMW OF NORTH AMERICA, INC.

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
G09914287Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Reassemble the vehicle.
Check stored fault messages.
Clear diagnostic fault entries from fault memory.