Inter01fan

What do you mean manual system vs auto? Coolant maintenance has been good - its full right now. Filled it up earlier this year. What do you mean temps at the heater core inlet/outlet?

Yep - I've tried the reset a few times and unfortunately, it does nothing.

Hi all, I've got a 2013 Ford Edge 3.5L SE. Recently, my drivers side started to not get heat but my passenger side does. My car is NOT a dual zone climate car and more interestingly, its not that I'm getting cold air, I'm getting room temperature air on my drivers side (feet, dash, and defrost same) but my passenger side is proper heat. I took it to the mechanic and he said it was the blend door, but replacing that that didn't do anything. I tried looking into the build of the HVAC system and I'm wondering whether a single zone climate car has 2 blend doors (Right and Left) or just one? Also, it looks like there are two other doors that could be causing the issue - the airflow mode door (I don't think this is it since I can control airflow) and the air inlet mode door (no clue what this does). If anyone could provide some advice or suggestions, would be greatly appreciated!