12 14 550 Replacing the control unit of the Digital Motor Electronics (After vehicle diagnosis): Notes

WARNING: This page is about a different car, the 2018 BMW 340i, 2017 BMW 340i, and 2016 BMW 340i. However, it is still accessible from the selected car via links, so may be relevant.

Prerequisite

Ignition is switched off.

WARNING: Working on 12 V electrical system.
Risk of short circuits! Risk of fire!

Make sure that there is no charger connected to the jump start terminal in the engine compartment.
Detach battery ground lead from battery.
For auxiliary batteries: Detach battery minus cables from all auxiliary batteries.

Preliminary work

Refer to REMOVING RIGHT LUGGAGE COMPARTMENT TRIM PANEL
Disconnecting the battery earth lead
Refer to UNINSTALL COVER FOR THE DME CONTROL UNIT
Refer to DISCONNECTING CONNECTOR FROM DME CONTROL UNIT AND FROM POWER DISTRIBUTION MODULE (PDM)

Follow-up work

Refer to CONNECT THE CONNECTOR TO THE DME CONTROL UNIT AND THE POWER DISTRIBUTION BOX (PDM)
Refer to INSTALL COVER FOR THE DME CONTROL UNIT
Connecting the battery earth lead
Install right luggage compartment trim panel
If the DME control unit is replaced, perform PROGRAMMING/ENCODING of the control unit.
Refer to RESET ULTRA-SMALL QUANTITY ADAPTATION