Just interested--where is your cabin temperature sensor? Mine is on the bottom of a row of upper cabinets. The sensor works fine, but if the sun is on the same side it reads really high! I was wondering why the air was coming on when it felt like the van was in the 70s, and the sensor was reading about 90.
On the chance it was reading from the wood cabinetry, I lowered it just a bit with a couple of rubber grommets.
It would make more sense on the interior divider wall between the cabin and the rear bath, but I'm not sure I'm up to fishing wires in this thing.
Right now depending upon how I park I can alleviate the effect with a small USB fan aimed at the sensor, but I am interested to see if any of you have noticed the same.