Hyundai sonata Owner's Manual page 251

The mode selection button controls
the direction of the air flow through the
ventilation system.
Face-Level (B, D, F)
Air flow is directed toward the upper
body and face. Additionally, each outlet
can be controlled to direct the air
discharged from the outlet.
Bi-Level (B, C, D, E, F)
Air flow is directed towards the face and
the floor.
Floor-Level (A, C, D, E)
Most of the air flow is directed to the
floor, with a small amount of the air
being directed to the windshield and side
window defrosters.
Floor & Defrost (A, C, D, E)
Most of the air flow is directed to the
floor and the windshield with a small
amount directed to the side window
defrosters.
Most of the air flow is directed to the
windshield with a small amount of air
directed to the side window defrosters.
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MAX A/C-Level (B, D, F)
The MAX A/C mode is used to cool the
inside of the vehicle faster. Air flow is
directed toward the upper body and
face.
In this mode, the A/C button and the
Recirculation mode button cannot be
selected. Turn the fan speed mode to
adjust.
After the interior cabin has cooled
sufficiently, move the temperature knob
away from the MAX A/C setting and
adjust the knob to the desired position.
If you wish to continue using A/C
ON, make sure the A/C button LED is
illuminated.
Defrost-Level (A, D)
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