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12 42 510 Replacing battery positive lead (between starter motor and B+ support point) (S54)

Read fault memory. Switch off ignition.

Follow instructions for disconnecting and connecting battery.  (See 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY )

Disconnect battery negative lead from battery and lay to one side.

Remove reinforcement plate  (See 51 71 374 REMOVING AND INSTALLING/REPLACING REINFORCEMENT PLATE ON FRONT AXLE SUPPORT )

Release nut, remove battery positive lead (1) from battery positive terminal.

Tightening torque 12 42 1AZ.  See ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES article.

Fig 1: Locating Battery Positive Lead
G04748604Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten nut.

Remove battery positive lead (1) from holder.

Fig 2: Locating Battery Positive Lead
G04748605Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: For a better overview, this work step is shown without the intake air manifold and from above. Carry out the work from below.

Unfasten nut.

Installation: 

Tightening torque, 12 41 4AZ.  See ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES article.

Detach battery positive lead from starter motor and remove.

Fig 3: Locating Battery Positive Lead From Starter Motor
G04748597Courtesy of BMW OF NORTH AMERICA, INC.
NOTE:

Check stored fault messages.

Now clear the fault memory.

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