Buick 2003 Rendezvous Owner's Manual page 181

For quick cool down on hot days, do the following:
1. Select the vent mode.
2. Select the coolest temperature.
3. Select the highest fan speed.
4. Select N C .
5. Select the recirculation mode.
Using these settings together for long periods of time may
cause the air inside of your vehicle to become too dry. To
prevent this from happening, after the air inside of your
vehicle has cooled, turn the recirculation mode off.
The air-conditioning system removes moisture from the
air, so you may sometimes notice a small amount of
water dripping underneath your vehicle while idling
or after turning off the engine. This is normal.
Defogging and Defrosting
There are
two
modes to clear fog or frost from your
windshield. Use the defog 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.
Turn the right knob to select the defog or defrost mode.
+3
(Defog): This mode directs air to the windshield
and the floor outlets. When you select this mode,
the system turns off recirculation and runs the
air-conditioning compressor unless the outside
temperature is at or below freezing. The recirculation
mode cannot be selected while in the defog mode.
@
(Defrost): Pressing this button directs most of the
air to the windshield and the side window outlets, with
some air directed to the floor outlets. In this mode, the
system will automatically turn off recirculation and run the
air-conditioning compressor, unless the outside
temperature is at or below freezing. Recirculation cannot
be selected while in the defrost mode.
Rear Window Defogger
The rear window defogger uses a
remove fog from the rear window.
warming grid to
REAR: Press this button to turn the rear window
defogger on or off. An indicator light in the button
will come on to let you know that the rear window
defogger is activated.
The rear window defogger will turn off approximately
10 minutes after the button is pressed. 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.
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.
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