Hyundai i30 Owner's Manual page 138

Features of your vehicle
Recirculated air position
The indicator light on the
button is illuminated when
the recirculated air position
is selected.
With the recirculated air
position selected, air from
passenger compartment
will be drawn through the
heating system and heated
or cooled according to the
function selected.
Outside (fresh) air position
The indicator light on the
button is illuminated when
the outside (fresh) air posi-
tion is selected.
With the outside (fresh) air
position selected, air enters
the vehicle from outside and
is heated or cooled accord-
ing to the function selected.
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✽ ✽ NOTICE
Prolonged operation of the heater in the
recirculated air position (without air
conditioning selected) may cause fog-
ging of the windshield and side windows
and the air within the passenger com-
partment may become stale.
In addition, prolonged use of the air
conditioning with the recirculated air
position selected will result in excessive-
ly dry air in the passenger compart-
ment.
WARNING
• Continued use of the climate con-
trol system operation in the recir-
culated air position may allow
humidity to increase inside the
vehicle which may fog the glass
and obscure visibility.
• Do not sleep in a vehicle with the
air conditioning or heating sys-
tem on. It may cause serious
harm or death due to a drop in the
oxygen level and/or body temper-
ature.
• Continued use of the climate con-
trol system operation in the recir-
culated air position can cause
drowsiness or sleepiness, and
loss of vehicle control. Set the air
intake control to the outside
(fresh) air position as much as
possible while driving.