I had a question about “parking assist unavailable “ in a 2015 tesla 85D. It results in me not being able to use autopilot, yet it appears “all” sensors work when cars pass by on the road, so why would this alert be in place anyways? To note, sometimes they work and autopilot shows cars around me and has no errors, however more often, the car seems so show when I first start the car that the errors are there there, as well as all autopilot graphics shut off and I have no parking sensor assist or anything related to it. Any clues by chance?