12 31 020 Removing and installing or replacing alternator (S63 B44 T 0)

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Necessary preliminary tasks:

Switch off ignition.
Disconnect BATTERY EARTH LEAD .
Remove DRIVE BELT FOR ALTERNATOR .
Remove FUEL DELIVERY LINE .

IMPORTANT: Risk of damage!
Cover radiator.

Unclip all cables (1) and coolant lines from brackets.

Fig 1: Identifying Cables

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Place auxiliary water pump to one side.

Unfasten screws (2).

Tightening torque 12 31 1AZ .

Put cable clip aside.

Feed out alternator and remove.

Fig 2: Identifying Auxiliary Water Pump Screws

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check stored fault message.
Reassemble the vehicle.
Delete fault memory.