12 14 550 Replacing Control Unit (DME)

IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection). See 61 35... NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE) .

Necessary preliminary tasks:

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

Replacement:

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

Switch off ignition.

Lever out expander rivet.

Remove gasket (1).

Release screws (2).

Feed out partition (3) and remove.

Fig 1: Identifying Expander Rivet Gasket And Screws

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Lever out expander rivet.

Release locks in direction of arrow.

Feed out fresh air duct (1) and remove.

Fig 2: Removing Fresh Air Duct

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Open retainers.

Release lock (1) in direction of arrow.

Remove cover (2).

Fig 3: Locating Retainers Lock And Cover

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Release screws and remove retaining bar (1).

Unlock upper section (2) of partition seal in direction of arrow and remove.

Release grommets (3) for wiring harnesses from lower section of partition seal and from electronics box.

Installation:

Make sure grommets are correctly seated (watertightness).

Fig 4: Unlocking Upper Section Of Partition Seal

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Unlock plugs (1) using slide in direction of arrow and remove. Remove control unit (2).

Installation:

Replacement: Note device identification number and coding.

Fig 5: Identifying DME Control Unit

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NOTE: Check stored fault messages. Now clear the fault memory.