On my M3 P3D
Yup. Gone. Rear camera black too. Of course I rebooted. Camera returned. No TACC or AP. Disabled & re-enabled. Nothing.
Did you try a full “power off”. I had the same problem and powered off for 3 minutes / under “safety & security” and it was back when I started back on my trip
Sounds like the “inattentive at wheel” subroutine triggered. That’s a weird bug, be curious to see what it takes to clear.