Rear Window Defogger; Defogging And Defrosting - Cadillac 2008 XLR Owner's Manual

These delays prevent false readings. If the temperature
goes down, the outside temperature will be shown
when you start the vehicle. If it has been turned off for
less than three hours, the temperature will be recalled
from the previous vehicle operation.
There is also an inside temperature sensor located to
the left of the ignition button. The automatic climate
control system uses this sensor to receive information,
so if you block or cover it, the system will not function
properly.

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. There are two modes to clear fog or
frost from your windshield. Use the floor/defog mode
to clear the windows of fog or moisture and warm
the passengers. Use defrost to remove fog or frost
from the windshield more quickly.
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(Floor/Defog): Press the mode button until the
defog mode appears on the display. This mode directs
the air between the windshield, floor outlets and
side windows. When you select this mode, the system
turns off recirculation and runs the air conditioning
compressor unless the outside temperature is near
or below freezing.
1
(Defrost): Press this button to direct most of the
air to the windshield, with some air directed to the side
windows. In this mode, the system will automatically
turn off the recirculation and run the air conditioning
compressor, unless the outside temperature is near or
below freezing. Do not drive the vehicle until all the
windows are clear.

Rear Window Defogger

The rear window defogger uses a warming grid to
remove fog or frost from the rear window.
The rear window defogger will only work when the
engine is running.
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(Rear Window Defogger): Press this button to
turn the rear window defogger on or off. Be sure to
clear as much snow from the rear window as possible.
The rear window defogger will turn off about 10 minutes
after the button is pressed when traveling less than
30 mph (48 km/h). If turned on again, the defogger
will only run for about five minutes before turning off.
The defogger can also be turned off by pressing
the button again or by turning off the engine.
The heated outside rearview mirrors will heat to
help clear fog or frost from the surface of the
mirrors when the rear window defogger is on.
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