To cancel or reset the Auto Defogging System
Press the front windshield defroster button for 3 seconds when the ignition switch is in the ON position. When the Auto Defogging System is canceled, ADS OFF symbol will blink 3 times and the ADS OFF will be displayed on the climate control information screen.
(I did this and the "issue" has been largely resolved. You need to keep this ADS OFF or the car would automatically keep trying to shift to fresh air to keep the wind screen clear of any potential fog buildup.)