12 42 500 Removing and installing or replacing battery positive lead (between starter motor, alternator and battery positive support point) (M62)

Interrogate fault memory of DME control unit.

Switch off ignition.

Disconnect battery negative lead from battery.

Observe safety instructions for handling vehicle battery.

Disconnect negative battery lead.

Remove reinforcement plate.

Release screws.

Remove underbody paneling (1).

Fig 1: Removing Underbody Paneling

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Remove protective cap (1) of battery positive lead from starter motor.

Release nut (2).

Tightening torque, refer to 12 41 4AZ in ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES - X5 4.6L .

Disconnect battery positive lead from starter motor.

Unclip battery positive lead from holders.

Fig 2: Removing Protective Cap From Starter Motor

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Unclip battery positive lead from holders (1) on upper oil sump section.

Fig 3: Removing Battery Positive Lead From Holders

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Release nut (1).

Disconnect battery positive lead (2) from alternator. Tightening torque, refer to 12 31 1AZ in ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES - X5 4.6L .

Fig 4: Disconnecting Connector Plug Alternator

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Turn fasteners on acoustic cover 90° counterclockwise.

Remove acoustic cover.

Fig 5: Removing Acoustic Cover

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Release cable ties (1).

Fig 6: Removing Cable Ties

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Remove sealing caps on cover of ignition coils on left.

Release nuts.

Remove cover on ignition coils on left.

Fig 7: Removing Ignition Coil Cover

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Installation: 

Check profile seal (1) for damage and correct seating, replace if necessary.

Fig 8: Identifying Profile Seal

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Release nut.

Fold down protective cap (1).

Fig 9: Installing Protective Cap

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Release nut (2).

Tightening torque, refer to 12 51 4AZ in ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES - X5 4.6L

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

Fig 10: Removing Jump Starting Lead

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