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Home >> BMW >> 2018 >> M2 Standard Trans >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Engine Electrical System - Repair (F87) >> 12 42 Starter Cables >> Replacing positive battery cable between starter motor, alternator and positive battery connection point (N55T0 Engine) (2016-2018)

Replacing positive battery cable between starter motor, alternator and positive battery connection point (N55T0 Engine) (2016-2018)

Necessary preliminary tasks: 

Loosen positive battery cable (1).

Tightening torque 12 42 3AZ .

Release clamp (2).

Feed out positive battery cable.

G10102284Courtesy of BMW OF NORTH AMERICA, INC.

Release positive battery cable from clamp (1).

G10102285Courtesy of BMW OF NORTH AMERICA, INC.

Release rear cable strap (1) on cylinder head cover.

Replace cable straps.

NOTE: Graphic shows engine removed.
G09914338Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (1).

Tightening torque 12 42 2AZ .

Disconnect positive battery cable from starter motor.

Release cable strap (2).

Replace cable straps.

G10102287Courtesy of BMW OF NORTH AMERICA, INC.

Remove protective cap and release nut underneath.

Tightening torque 12 42 1AZ .

Disconnect positive battery cable (1) from alternator.

G13826973Courtesy of BMW OF NORTH AMERICA, INC.

Unclip positive battery cable from holder (1) and remove.

G10102289Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Check stored fault messages.
Clear diagnostic fault entries from fault memory.