Originally Posted by
JOEMAMA
I was able to fix my issue...
6 months ago the dealer replaced the HVAC control under warranty and they botched the job. I showed the dealer pictures and they agreed to order me a replacement HVAC control unit so I could replace it myself. There were cabling issues (due to poor installation) with both the mode and air mix doors which is why I was getting cold air through the defrost vents but hot air at my feet when in defrost/floor mode.
After installing the new control unit and ensuring the cables were adjusted properly, I now have full heat and no mode issues!