Does the cluster beep and flash the car/lock icon? Does it run for 2 seconds every time? If so the immobilizer is confused. Take the battery connections off, touch them together for 10 min, then try starting again. The radio will probably go into safe mode, but after a while should come out on its own.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.