12 90 100 Replacing fan for electronics box (N62)

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. 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 .
Remove right fresh air duct. See 64 31 053 REMOVING AND INSTALLING OR REPLACING FRESH AIR DUCT .
Release control unit holder; if necessary, release CD changer.

Important! Follow instructions for removing and installing electronic control units.

Release screw (2). Remove cover (1) of equipment box in direction of arrow towards right.

Installation: Push on cover (1) of equipment box in direction of arrow towards left into holder (3).

Fig 1: Detaching Cover Of Equipment Box

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Disconnect plug connections (1 to 6). Remove Valvetronic control unit, DME and integrated supply module.

Fig 2: Identifying Plug Connections

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Unlock plug connection (3) on fan for electronics box and disconnect. Release screws (1) on control unit carrier (2). Remove control unit carrier (2) towards top.

Fig 3: Identifying Plug Connection, Control Unit Carrier And Screws

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Release screws (1). Remove fan (2) in direction of arrow.

Fig 4: Removing Fan

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Check function of DME.