12 90... Removing and installing/replacing electronics box

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW X5, 2006 BMW X3, 2005 BMW X5, 2005 BMW X3, and 2004 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD PROTECTION) .

NOTE: Follow instructions for REMOVING AND INSTALLING ELECTRONIC CONTROL UNITS

Necessary preliminary tasks:

Read fault memory.
Disconnect NEGATIVE BATTERY CABLE
Remove CONTROL UNIT
Disconnect vehicle wiring harness in engine compartment on left.

Unlock DME control unit and remove.

Slacken If fitted, disconnect plug-in contact for electronics box fan.

Unlock equipment carrier at holder and remove.

Fig 1: Identifying DME Control Unit

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Cut open cable tie (1). Release screws.

Remove rear plate.

Fig 2: Identifying Cable Tie And Screws

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Version with electronics box fan.

Detach cable tie. Release screws.

Remove rear plate with fan.

Fig 3: Locating Engine Control Unit Fan, Cable Tie, And Screws

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Release screws for electronics box.

Fourth screw is hidden by carpet.

Add final details to vehicle.

Read fault memory.

Fig 4: Locating Screws For Engine Control Unit

Courtesy of BMW OF NORTH AMERICA, INC.