Warm air from under the seats...

[Duc Hunter]

I have been noticing this for a while, but just finished 2x10 hour days in my car over the weekend and it really began to bother me. As I drive the car down the highway I tend to get a lot of heat up between the front seats, like it’s coming out of our around the transmission tunnel. Today I was driving an air temperatures in the forties to 50s outside, had the thermostat control set to 64, and was cool in the car… Except for the significantly warm air coming up between the center console and both front seats. Anyone anyone have any idea what this is? Are used to think it was related to my diesel particulate filter doing a region cycle, but I know there’s plenty of heat shielding under the car, and it’s on both the passenger and driver side. My air conditioning system does not seem to have any issues, so I’m not suspecting that. I live in turn the entire climate control system off, and this still occurs.