12 31 020 Removing and installing/replacing alternator (N57 D30 O/T 1)

WARNING: This page does not describe the selected car, but rather 50 other vehicles, including the 2016 BMW M5, 2016 BMW ActiveHybrid 5, 2016 BMW 550i xDrive, 2016 BMW 550i, and 2016 BMW 535i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Read out the fault memory of the DDE control unit.
Switch off ignition.
Disconnect BATTERY EARTH LEAD .
REMOVE intake plenum.
Remove DRIVE BELT FOR ALTERNATOR .

Release connector (1) and remove.

Slacken nut (2).

Tightening torque 12 52 2AZ .

Disconnect positive battery cable from alternator.

Fig 1: Identifying Connector And Slacken Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (1).

Remove cover from deflecting element and undo bolt (1) beneath it.

Tightening torque 12 31 2AZ .

Remove deflecting element.

Fig 2: Identifying Deflecting Element Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque 12 31 1AZ .

Feed out alternator upwards and remove.

Fig 3: Identifying Screws Of Alternator

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check stored fault messages.
Delete fault memory.