Very similar experience. New Plaid purchased this past Saturday, drove the 1.5 hours home from Raleigh, cameras stated they calibrated but it would not go into traffic aware cruise (or auto steer of course). Reset once I got home, took the car out again, same exact result. Car says cameras are calibrated but cruise/autopilot will not engage. Called Tesla help line, they said 2 of my cameras are not calibrating and I will have to get it serviced. Next day my family is going out of town, and there's no way we are NOT driving the new Plaid. So took the 4 hour trip out of town with no cruise control to speak of--arrived with zero speeding tickets. That's the good ending to my story.