For some reason, my Highlander seems to trap moisture inside the car. When I turn it off, after a minute or so, I hear some things moving around the vents (dampers or gates or something, maybe?), and then when I return and it’s anywhere close to freezing or colder, then I have heavy fog and possibly ice on the inside window. When the air kicks on, the fog gets even worse before finally clearing up.
I can scrape ice on the outside of my window, but this is thr only car I’ve had that freezes I side, and I hate it. Does anybody know why it does this? What was the point of designing the vents to close shortly after turning off thr car? Why are things this way?!
Turn your A/C on. It dehumidifies the cabin, helps during the winter time.
Otherwise, check your passenger’s side floor underneath the floor mat. If there’s water there then your evaporator drain hose is clogged and needs to be cleared.
I’ll try the AC - I thought the defrost setting automatically engaged the AC, so I’ll try it manually.
I’ll also check the floor - I didn’t know about that.