12 42 550 Removing and installing/replacing between battery positive lead between starter motor and jump start terminal (M54)

WARNING: This page is about a different car, the 2003 BMW X5, 2002 BMW X5, and 2001 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Interrogate fault memory of DME control unit.

Switch off ignition.

Observe instructions for disconnecting and connecting battery. Refer to 12 00... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Disconnect negative battery lead.

Release nut.

Fold down protective cap (1).

Release nut.

Tightening torque, (21 N.m).

Remove battery positive lead from positive support point for jump starting.

Fig 1: Folding Down Protective Cap

Courtesy of BMW OF NORTH AMERICA, INC.

Remove cover from fuel injectors.

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

Fig 2: Unclipping Battery Positive Lead From Holder

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Release nut (2).

Tightening torque, refer to 12 41 4AZ in ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES .

Detach battery positive lead (2) from starter motor and remove.

Fig 3: Removing Battery Positive Lead From Starter Motor

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For purposes of clarity, reinforcement plate is now shown.

Do not remove reinforcement plate.

NOTE: Interrogate fault memory of DME control unit.

Check stored fault messages.

Rectify faults.

Then clear fault memory.