Welcome onboard.

Defrost setting is default mode on our vacuum operated heater control system. If you have had any work done recently in engine compartment, you may want to check vacuum hoses at rear of engine compartment around the firewall.

p.s. You don't provide car info so I'm assuming v6.


98 Mystique LS v6 atx 110,000km
97 Contour LX v6 atx 125,000km
stock CD on LS, cass on LX
spoiler, tinted windows on LS only
4 wheel discs on LX only
All other available options on both