VENT Button
WARNING: This page is about a different car, the 2002 Mercury Grand Marquis and 2002 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
Pressing button will display VENT in display window. A/C compressor remains off. Outside air is directed to panel vents. Temperature can be adjusted to heat incoming air but not cooled below outside air temperature.