I need some advise on this problem on my 04 Rs:

- even though rear-defrost and recirc vent buttons lights up they don't function! Rear glass panel does NOT defrost and interior vent/fan does NOT recirculate - I smell exhaust from outside.

- I feel the vacumn of air being sucked in even when recirc is lid. the only thing that works from the climate panel button is the A/C.

- Is there a fuse or switch that I can check? I found none but maybe there's some other fix?

- and no I saw nothing blocking the vent hole. actually you can't see anything up there, pretty much inaccessable.

thanks!