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No, not part of any german forum. Only bought the car the other day. Got it back from garage yesterday, hence the post. Was there an outcome from the german forum?

Went to a very experienced garage for a remap. Turns out it cannot be done, my ecu is not locked, but it does not allow them to access or input anything. He said hes never seen anything like this in his life. Does anyone know what could be wrong with it? Car drives fine. 2015 MK4. He advised...