12 90 100 Replacing fan for electronics box

WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Switch off ignition.
Follow INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .
Disconnect BATTERY ground terminal.
Detach fuse box in passenger compartment and pull back; to do so, refer to REMOVING FUSE BOX

IMPORTANT: FOLLOW INSTRUCTIONS FOR REMOVING AND INSTALLING ELECTRONIC CONTROL UNITS .

Pull back carpet.

Release lower nut on fuse carrier holder.

Pull holder slightly towards front.

Fig 1: Identifying Lower Nut On Fuse Carrier Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connections for fan motor (1).

Release screws (2). Remove fan.

Fig 2: Identifying Fan Motor With Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Add final details to vehicle.

Read fault memory.