Quick question on HVAC system. I had no control of motor speed and could not turn on the interior lights tonight until I got home , opened the door to take stuff out of the back seat, then everything was back to normal. any ideas ?

Also here is a really good one.
Every time we tow the car to the track the map lights turn on when towing on the trailer. I will unlock and lock the doors with the remote while towing down the highway and they will stay off for 50-100 miles. Also as soon as I connect or disconnect the trailer, they will come on. It's really just a comical game to us while towing to every event, every rest stop and every connect or disconnect to drive the towing truck by itself. I thought it was a static thing going on so put ground straps on the trailer but did not help. Crazy.