I had the cabin temp on 75 degrees today and was very surprised to find that the cabin was getting colder, (outside temp - 43).
Turning the fan up only produced cold air and it didn't matter if the heater was set on re-circulate or blend.
I could hear the fan making more noise as I turned the fan setting up, but the air flow was minor to none. I checked the center vents and the air was coming out but not as fast as it should on 11!
I switched the air flow to the floor and the flow was almost zero. I switched it to the defroster and it was a medium flow but not an 11.
I could feel the cabin was producing a sense of heat around my head but certainly wasn't producing any heated air from any vents, especially the floor.
As noted, the air speed was changing rates but it didn't change any of the vent selections, at least, not that I could sense it because the air flow was so weak. Even the air flow from the console, to back seat vents was very weak.
The air conditioner worked very good this summer, so this part of the HVAC system worries me.
My feet and legs were telling me that riding in the Tesla this winter, isn't going to be very comfortable, so until Tesla fixes this issue, it looks like I better bundle up!!
- - - Updated - - -
It's weird how it works now. When I get in the car in the morning, I can feel the heat, but the fan speed is quite low. It almost feels like there is a radiant heater under the dash. Then, as I drive, it actually starts getting colder. I can feel the cold in my legs and feet. Usually, turning the fan speed up manually helps, but I do wonder how it's going to be when it starts getting really cold.
Exactly! I thought I was imagining the 'radiant heat' thing. I couldn't tell where the heat was coming from all I knew was my feet and legs were very uncomfortable.