The answer is yes. Only to ensure the BMW control unit FEM is completed and dry enough, Xhorse VVDI2 is able to read FEM data after water damage. Besides, BMW key data still can be saved via VVDI2.
Following is an experiment:
This is a BMW FEM module that had been water damaged. It looks completed but dirty and wet. After cleaning and drying the circuit board, connect to VVDI2 BMW & GODIAG FEM Test Platform.
BMW >> Key learn >> FEM/BDC Key Learn >> Get key info
There are 2 enable keys.
Currently no key is in ignition switch.
Read FEM data OK.
Insert a working key into GODIAG BMW FEM Test Platform.
Click “Get key info” again.
It tells “Key 2”.
That means the FEM is still workable for key programming.
That’s it.
Trial is successful!
https://www.vvdishop.com/service/xhorse-vvdi2-read-water-damaged-bmw-fem-data.html