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i believe its because my radio aint working so i am guessing dats why i cant communicate with my ecu now my second question once my kit comes in for the radio is there anything else other then the radio that wont let me communicate with the ecu?
I don't know if this will help but I have a 2000 A6 2.7T and on my car I could not communicate with the ecu either. I discovered it was a bad ABS module, if I unplugged it I could communicate with the ecu just fine.