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Home >> BMW >> 2015 >> Z4 sDrive28i, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Engine Electrical System - Repair (N54) -- Z4_E89) >> Starter And Alternator Cables >> 12 42 500 Replacing the positive battery cable between the starter motor, alternator and positive battery connection point (N54)

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

WARNING: This page is about a different variant/trim than selected.

Necessary preliminary tasks: 

Open cover.

Slacken nut (1).

Tightening torque 12 42 3AZ .

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

Fig 1: Identifying Positive Battery Cable Lead And Nut
G06904082Courtesy of BMW OF NORTH AMERICA, INC.

Release nut (1) on starter motor.

Tightening torque 12 42 2AZ .

Disconnect positive battery cable from starter motor.

Release nut (2) on alternator.

Tightening torque 12 42 1AZ .

Feed out positive battery cable from clamp (3) and remove.

Fig 2: Identifying Positive Battery Cable Clamp, Starter Motor And Alternator Nuts
G06905182Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Reassemble the vehicle.
Check stored fault messages.
Delete fault memory.