The auto-revert on air recirculation is a new one for me. I have a Kia and I'm pretty sure the systems are identical, so I'm going to see if mine does the same.
I think the trait I've noticed in my car is that the recirculation turns off if you put the HVAC on "auto".
There's a cool feature where it automatically turns on in certain situations like in tunnels. I wish I could add my own recirculation areas since i often drive by a smelly sewage treatment plant.
