LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2012 >> X3 28i >> 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 (N55)

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

Necessary preliminary work: 

Fold back cover (1).

Release nut underneath. Remove positive battery cable from battery positive terminal.

Tightening torque: 12 42 3AZ .

Fig 1: Identifying Back Cover Of Positive Battery Cable
G09943581Courtesy 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 Protective Cap And Connector
G09875409Courtesy 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.

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 Connector, Starter Motor And Screws
G06905177Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Reassemble the vehicle.
Check stored fault messages.
Delete fault memory.