[Merc6]

I believe if you run the A/C temp dial to maximum mode the car goes into recirculate without lighting the recirc lamp.

So, once at a decent level of temp I rotate it back.....you can feel a detent btw, and leave it there......I'm confident this is the case cause the fan quiets down as it it begins to pull outside only air.

And definitly get the afterblow enabled if you havent yet.....kind of weird the way it works/cycles/times on/off several times over a one hour period.

Rob

I also have reason to believe A/C is on(in warmer temps where the compressor is not locked out) when you hit defrost button but does not light up or show up on the touch screen.

As for recirc, it still lets in outside air just not as much as regular mode.