Buick 2007 Rainier - Manual (Page 173)

@ (Recirculation): Press this button to turn
recirculation mode on or off. When this button is
pressed, an indicator light in the button will
also come on to let you know that it is activated.
Recirculation mode is used to recirculate the
air inside of your vehicle. Use this mode to help
prevent outside odors and/or dust from entering
your vehicle or to help cool the air inside of
your vehicle more quickly. Recirculation mode can
be used with vent and bi-level modes, but it
cannot be used with floor, defog or defrost modes.
You may also notice that the air conditioning
compressor will run while in recirculation mode.
This is normal and will help to prevent fogging.
If the weather is cold and damp, the system may
cause the windows to fog while using recirculation
mode. If the windows do start to fog, select
defog or defrost mode and increase fan speed.
Recirculation mode, if selected, will be cleared
when the engine is turned off.
# A/C (Air Conditioning): Press this button to
manually turn the air conditioning system on or off.
When the system is on, the system will
automatically begin to cool and dehumidify the air
inside of your vehicle. The air conditioning
symbol will appear on the display when the air
conditioning is on and will turn off when the
air conditioning is off.
If you select turn the air conditioning off while in
front defrost or defog mode, the air conditioning
symbol will turn off, however, the A/C compressor
will remain on to help de-humidify the air inside
the vehicle. If one of the other modes is selected
the compressor will then turn the A/C off until it
is selected again or the AUTO button is pressed.
To avoid fogging the inside glass on rainy and
humid days at temperature above freezing,
press the air-conditioning button to run the air
conditioning compressor. Also, it is best to avoid
the use of recirculation mode except when
maximum air conditioning performance is needed
or for short times to avoid exterior odors.
You may notice a slight change in engine
performance when the air-conditioning compressor
shuts off and turns on again. This is normal.
173