Update from Vienna, Austria
They checked the harness from the front triple cam down to the Autopilot-Computer and found at least two problems, first they found a strong bended coax cable in between that may have been damaged, and second, the connector on the autopilot computer side for the maincam was not properly assembled, the technician said it looked deformed somehow
They ordered the needed coax cables and the triple cam again
BUT it works now, moments after he corrected the Problems as a first aid solution. He restarted the car and everything works fine.
When i got there, the car was not working properly since at least 10 days. So the fault is definitely between the cam and the autopilot-computer.
It seems like a partial win for me so far, Stuff is ordered, but it works for now
Will post again if it starts to fail again.
Thanks for every input in this thread and i hope that other people will also find their solution (including me on a long term
)