For A/C people in the know
I live in the Tampa area, and it has been very hot this year. I notice that when in "auto" mod of the A/C system, the air is always in recycle mode. The recycle light is not on. If I take it out of "auto" mod, and push the A/C switch, it stays in recycle mode until I cycle the recycle button a few times. If I turn on recycle, mode, it will come on, but it takes a few pushes of the button to get it to shut off.
I understand the principle of helping the cooling, but in recycle it does get pretty noisy in the cabin.