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Home >> BMW >> 2025 >> M240i >> Repair and Diagnosis >> External Pages >> Different car >> Section 248 (Engine Electrical System -- Repair M4 (G82 & G83)) >> 12 42 Starter Line >> 12 42 651 Removing and installing/replacing the positive battery cable remote positive terminal alternator (after vehicle diagnosis) (M4 RWD models, 2021-2023) >> Installing the positive battery cable from the alternator to the auxiliary terminal for jump starting

Installing the positive battery cable from the alternator to the auxiliary terminal for jump starting

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Positive battery cable of the alternator 

G15296975Courtesy of BMW OF NORTH AMERICA, INC.

Precondition 

CAUTION: Improper routing of the positive battery cable  .
Risk of short circuits! 
  • Route the positive battery cable without abrasions and do not trap.
TIGHTENING TORQUE SPECIFICATIONS

Positive battery cable to the alternator
M8 Tightening torque  19 Nm
G14927393Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATIONS

Battery positive lead to battery positive terminal
M8 Tightening torque  19 Nm
G14927392Courtesy of BMW OF NORTH AMERICA, INC.

The locks (1)  must engage audibly.

G14927391Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work