Agreed, it's typically some dirt on the screen in front of the camera, I've started carrying screen cleaner and a cloth so I can stop and sort it out. Twice now I've had the experience you describe, once in my own car, and again after collecting a loaner from Tesla.I love 99% of my model Y. (its my second Tesla) but the windscreen wipers are crap. No problem historically I would just turn them off when they start randomly going, but they caused me to turn to grumpiness yesterday. I drove from the south coast to the Peak district on Friday and back last night. The whole time both ways the wipers kept coming on. Last night (without any rain) the wipers wanted to be on all the way from Matlock to Heathrow. I got to the point of driving the car myself. I know its a 1st world problem! Annoying though. To be honest I thought the wiper off button was broken until a passenger over the weekend told me that the screen said they cant be turned off in autopilot.