12 90 100 Replacing fan for electronics box (N62)

WARNING: This page is about a different car, the 2005 BMW 545i and 2004 BMW 545i. 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. Refer to 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .
Disconnect battery ground terminal. Refer to 61 21 010 REMOVING AND INSTALLING BATTERY .
Remove right fresh air duct. Refer to 64 31 053 REMOVING AND INSTALLING OR REPLACING FRESH AIR DUCT .

IMPORTANT: Follow instructions for removing and installing electronic control units.

Unscrew bolt (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: Locating Equipment Box Cover Retaining Screws

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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: View Of Fan Plug Connection

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Release screws (1).

Remove fan (2) in direction of arrow.

Fig 4: Locating Fan Retaining Screws

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Check function of DME.