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 negative lead .
Remove right fresh air duct . See 64 31 053 REMOVING AND INSTALLING OR REPLACING FRESH AIR DUCT .

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: Identifying Electronics Box Cover, Slide And Bolts

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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 Screws And Control Unit Carrier

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Remove fan (2) in direction of arrow.

Fig 4: Identifying Fan And Screws

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Check function of DME.