Defogging and Defrosting

Fog on the inside of windows is a result of high humidity (moisture) condensing on the cool window glass. This can be minimized if the climate control system is used properly. You can use either defog or front defrost to clear fog or frost from your windshield.

to clear the windows (Defog): Use this setting to clear the windows of fog or moisture. This setting will deliver air to the floor and windshield outlets.

the front defrost button (Front Defrost): Press the front defrost button to clear the windshield and side windows of frost or fog quickly. The system will automatically control the fan speed if you select defrost from AUTO mode. If the outside temperature is 40°F (4°C) or warmer, your air conditioning compressor will automatically run to help dehumidify the air and dry the windshield. Do not drive the vehicle until all the windows are clear.

    See also:

    Power Windows
    Power Windows Press the switch to lower the window. Pull the switch up to raise it. The switches work when the ignition is in ON/RUN or ACC/ACCESSORY, or in Retained Accessory Power (RAP). ...

    Overview
    The Buick Rendezvous, introduced in the spring of 2001 as a 2002 model year vehicle and produced through the present, is a sport utility vehicle produced by the Buick division of General Motors. ...

    Driving Characteristics and Towing Tips
    WARNING! The driver can lose control when pulling a trailer if the correct equipment is not used or the vehicle is not driven properly. For example, if the trailer is too heavy, the brakes ...