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Home >> BMW >> 2018 >> X5 xDrive40e >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Engine Electrical System - Repair >> Starter And Alternator Cables >> 12 42 500 Replacing positive battery cable between starter motor, alternator and positive battery connection point (N55)

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

Necessary preliminary tasks: 

Open cover.

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

Tightening torque 12 42 3AZ .

Fig 1: Locating Nut And Positive Battery Cable
G04793923Courtesy of BMW OF NORTH AMERICA, INC.

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

Tightening torque 12 42 1AZ .

Fig 2: Locating Battery Positive Lead Nut
G04751341Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 3: Identifying Positive Battery Cable And Holder
G04755156Courtesy 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: Locating Positive Battery Cable Nut
G04751335Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Reassemble the vehicle.
Check stored fault messages.
Clear diagnostic fault entries from fault memory.