12 14 550 Replacing control unit (DME)

WARNING: This page is about a different car, the 2005 BMW 530i, 2005 BMW 525i, 2004 BMW 530i, and 2004 BMW 525i. 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).

Necessary preliminary tasks:

Follow instructions for Removing And Installing Electronic Control Units .
Read fault memory.
Switch off ignition
Remove lower section of microfilter housing on right. See CABIN AIR FILTER .

Unlock cover (1) with slide (3).

Release screws (2).

Remove electronics box cover (1).

Installation:

Engage electronics box cover (1) correctly in hinges.

Fig 1: Engaging Electronics Box Cover

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Unlock and detach all plug connections on DME control unit (1).

Unlock DME control unit (1) and remove.

Fig 2: Removing DME Control Unit

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Carry out coding/programming.

NOTE: Read out fault memory of DME control unit.

Check stored fault messages.

Now clear the fault memory.