Defogging And Defrosting - Buick Enclave 2008 Owner's Manual

The climate control system uses the information from
these sensors to maintain your comfort setting by
adjusting the outlet temperature, fan speed, and the air
delivery mode. The system may also supply cooler
air to the side of the vehicle facing the sun. The
recirculation mode will also be used as needed to
maintain cool outlet temperatures.

Defogging and Defrosting

Fog on the inside of the 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. There are two modes to clear
fog or frost from your windshield.
Use the mode up and down arrows to select the defog
mode. Use the defrost button to select the defrost mode.
-
(Defog): The defog mode is used to clear the
windows of fog or moisture and warm the passengers.
This mode directs air to the windshield, floor outlets,
and side window vents. When this mode is selected, the
system turns off recirculation and runs the air
conditioning compressor unless the outside temperature
is close to freezing. The recirculation mode cannot be
selected while in the defog mode. Do not drive the
vehicle until all the windows are clear.
3-28
To clear fog from the rear seat side windows, select the
bi-level mode on the rear climate control system and
direct the headliner outlets toward the side windows.
0
(Defrost): Press this button to remove fog or frost
from the windshield more quickly. This mode directs
most of the air to the windshield and side window vents
and some to the floor vents. In this mode, the system
automatically forces outside air into the vehicle.
The recirculation mode cannot be selected while in the
defrost mode. The air conditioning compressor runs
automatically in this setting, unless the outside
temperature is close to freezing. Do not drive the
vehicle until all the windows are clear.
While in defrost mode, if the PASS button is pressed,
the PASS button indicator will flash three times to let you
know that the passenger climate control system
cannot be activated. If the passenger temperature
buttons are adjusted while in defrost mode, the driver
temperature indicator will change. The passenger
temperature will not be displayed.
AUX (Auxiliary): Press this button to turn the rear
heating and air conditioning on. See Rear Air
Conditioning and Heating System on page 3-30 or Rear
Air Conditioning and Heating System and Electronic
Climate Controls on page 3-31.