Defogging And Defrosting; Rear Window Defogger - Cadillac 2005 XLR Owner's Manual

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. The recirculation mode cannot be
selected while in the floor/defog mode.
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(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. Recirculation cannot be selected while in
the defrost mode. Do not drive the vehicle until all the
windows are clear.
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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 approximately
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 approximately 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.
The rear window defogger and heated mirrors are
automatically disabled when the retractable hardtop is
moving or down.
Notice: Don't use anything sharp on the inside of
the rear window. If you do, you could cut or damage
the warming grid, and the repairs wouldn't be
covered by your warranty. Do not attach a temporary
vehicle license, tape, a decal or anything similar to
the defogger grid.