12 90 100 Replacing fan for electronics box

WARNING: This page is about a different car, the 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. See 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD .
Detach fuse box in passenger compartment and pull back.

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: Locating Lower Nut On Fuse Carrier Holder

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Disconnect plug connections for fan motor (1).

Release screws (2). Remove fan.

Fig 2: Identifying Fan Motor And Screws

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Add final details to vehicle.

Read fault memory.