12 14 550 Replacing control module (DME)

WARNING: This page does not describe the selected car, but rather 17 other vehicles, including the 2006 BMW 330Ci, 2006 BMW 325Ci, 2005 BMW 330xi, 2005 BMW 330i, and 2005 BMW 330Ci. However, it is still accessible from the selected car via links, so may be relevant.

Follow instructions for removing and installing electronic control units. See 61 35... Note on replacing codable/programmable control units

Before replacing the control module, always follow the instructions listed below:

Code control unit. See 12 14 700 Coding control module (DME / DDE)
Program control unit. See 12 14 705 Programming control unit (DME / DDE)

CAUTION: It is absolutely essential to read out the fault memory with the MoDiC or the BMW DIS and to create a fault memory printout.

Turn off ignition.

Release screws (1).

Remove cover.

Fig 1: Releasing Screws

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Installation:

Correctly install wiring harness with grommet in cover (water tightness).

Hook cover (3) into hinges of underside of electronics box (1). Make sure upper stop (2) is correctly installed above hinges on underside of electronics box.

Fig 2: Checking Upper Stop

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Assignment of electronics box (with automatic transmission):

1 = Control unit, Digital Motor Electronics (DME)

2 = Control unit for automatic transmission

Fig 3: Identifying Control Unit For Automatic Transmission

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Disconnect plug connections (1).

Remove control unit (2).

Installation:

Replacement:

Observe equipment no. and coding.

Fig 4: Disconnecting Plug Connections

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NOTE: Interrogate fault memory of DME control module.
Check stored fault messages.
Rectify faults.
Then clear fault memory.