12 90 100 Replacing fan for electronics box

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  . See 61 13 050 REMOVING AND INSTALLING OR REPLACING FUSE BOX IN PASSENGER COMPARTMENT (BUILT AFTER 03/2007) .

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.