12 31 020 Removing and installing/replacing alternator (COOPER S)

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Special tools required:

11 8 401
11 8 402

Necessary preliminary tasks:

Read out fault memory of EMS / DME control unit
Check stored fault message
Switch off ignition
Disconnect battery, refer to 12 00 Disconnecting and connecting battery
Remove alternator drive belt, refer to 11 28 050 REMOVING A/C COMPRESSOR DRIVE BELT (COOPER S)
Remove front bumper trim, refer to 51 11 156 REMOVING AND INSTALLING FRONT BUMPER TRIM

Lower front end module and install special tools 11 8 401 and 11 8 402.

Fig 1: Installing Special Tools

G03309861

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut and remove positive lead (1).

Fig 2: Unlocking Plug

G03309862

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque 12 31 2AZ. Refer to ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES .

Unlock plug (2) and remove.

Release screws (1) and remove alternator.

Fig 3: Removing Alternator

G03309863

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque 12 31 1AZ. Refer to ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES .

NOTE: Now clear the fault memory.