RECIRCULATION (Rec) Switch
WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
OFF position: Outside air is drawn into the passenger compartment.
ON position: Interior air is recirculated inside the vehicle. The indicator lamp will also light.
Recirculation is canceled when or is selected, and resumes when another mode is chosen.
If the refrigerant pressure sensor input signal is high, recirculation is canceled, when and mode is selected.