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Okay there is a little update.
Firstly I give power directly to the DME and it also shown no communication.
Then I put a 2nd hand DME from a 130i which is MSV80 and the comunication is back!
Therefore I think the old DME is dead.
Now the problem is can I code the MSV80 to my 320i?
The DME from 320i do not tell what version it is.
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