BMW Installing Older (used) Control Units

Before installing an ECU in vehicle, please make sure part number and coding identifier matches original ECU.

First it is necessary to read configuration from old ECU and transfer it to newly installed ECUs (applies also to new "unused" ECUs purchased at BMW dealer).

On E6x, E7x, R6x, Fxx chassis programming correct VIN may be necessary (available in BimCOM under "Coding / Command" functions)