Buick 2004 Century - Manual (Page 126)

Sensors
The solar sensor on the vehicle monitors the solar heat
and the air inside of the vehicle. This information is
used to maintain the selected temperature by regulating
adjustments to the temperature, the fan speed, and
the air delivery system. The system may also supply
cooler air to the side of the vehicle facing the sun. The
recirculation mode will also be activated, as necessary.
Do not cover the solar sensor located in the center
of the instrument panel, near the windshield, or
the system will not work properly.
Passenger Control
The arrow buttons to control the temperature on the
passenger side of the vehicle are located to the right of
the PASSENGER CONTROL window. Press the
DUAL button so that the indicator light is on. Press the
right arrow to raise the temperature and press the
left arrow to lower the temperature on the passenger
side of the vehicle.
• If the indicator light below the arrows is amber this
indicates that the passenger side temperature is
set the same as the driver’s side.
• If the indicator light below the arrows is red, this
indicates that the passenger side temperature is
set warmer than that of the driver’s side.
• If the indicator light below the arrows is blue this
indicates that the passenger side temperature is
set cooler than that of the driver’s side.
Defogging and Defrosting
Fog on the outside of the windows is a result of high
humidity causing moisture to form and condense 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 the windshield and
side windows. Use the WINDSHIELD/FLOOR mode to
clear the windows of fog or moisture and warm the
passengers. Use the defrost mode to remove fog or frost
from the windshield more quickly. For best results,
clear all snow and ice from the windshield before
defrosting.
1
FRONT (Defrost): This setting brings in outside air
and directs most of the air through the defrost outlet.
Some of the air also goes to the floor vents and the side
window outlets. The indicator light on the button will
come on and WINDSHIELD will be seen on the display.
To defrost the windows quickly, press the FRONT
button, set the temperature to 90°F (32°C), select a high
fan speed, and turn the DUAL button off.
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