Buick 2004 Century - Manual (Page 120)

Climate Controls
Dual Climate Control System
The vehicle may have this climate control system.
The heating, cooling, and ventilation for the vehicle can
be controlled with it.
Manual Operation
To change the current mode, select one of the following
settings on the right knob.
MAX (Maximum Air-Conditioning): This mode
recirculates much of the air inside the vehicle and
sends it through the instrument panel outlets. The
air-conditioning compressor will run automatically
in this setting unless the outside temperature is below
40°F (4°C).
VENT (Ventilation): This mode brings in outside air
and directs it through the instrument panel outlets.
BI-LEV (Bi-Level): This mode directs approximately
half of the air to the instrument panel outlets, and then
directs most of the remaining air to the floor outlets.
Some air may be directed toward the windshield.
HTR (Heater): This mode directs most of the air to the
floor outlets, with some air directed to the outboard
outlets, for the side windows, and some air directed to
the windshield.
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