Defogging And Defrosting - Buick 2008 Allure Owner's Manual

You can also select modes by using the following
buttons:
h
(Recirculate): Press this button to recirculate
cabin air through the vehicle. It can be used to help
reduce the outside air and odors that enter your vehicle
or to help heat or cool the air inside your vehicle quicker.
An indicator light below the button will come on in this
mode. Operation in this mode during periods of high
humidity and cool outside temperatures may result in
increased window fogging. If window fogging is
experienced, select the defrost mode. To prevent the air
inside the vehicle from becoming stale, after five minutes
recirculate will allow some outside air into the vehicle.
#
(Air Conditioning): Press this button to turn the
air conditioning system on or off. When this button is
pressed, an indicator light below the button will come
on to let you know the air conditioning is activated. Air
conditioning can be selected in any mode as long as the
fan switch is on. The indicator light will change with each
button press even when conditions prevent operation.
On hot days during the vehicle's initial start-up, open the
windows to let hot inside air escape; then close them.
This helps to reduce the time it takes for the vehicle
to cool down. It also helps the system to operate
more efficiently.
3-22
For quicker cool down on hot days, do the following:
1. Select the vent air mode.
2. Select the recirculation mode.
3. Select the air conditioner.
4. Select the coolest temperature.
5. Select the highest fan speed.
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.
Using these settings together for long periods of time
may cause the air inside the vehicle to become too
dry. To prevent this, after five minutes recirculate will
allow some outside air into the vehicle.

Defogging and Defrosting

Fog on the inside of the vehicle is a result of high
humidity causing moisture to condense on the cool
window glass. This can be minimized if the climate
control system is used properly. There are two modes
to clear frost or fog from the windshield. Use the
defog mode to clear the windows of condensation
and to warm the vehicle's occupants. Use the defrost
mode to remove frost or condensation from the
windshield quickly.