Convenient Features of Your Vehicle
Air Intake Control
In this manual: Convenient Features of Your Vehicle
~1min read

This button is used to select the outside (fresh) air position or the recirculation air position.
Recirculated Air Position
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When the recirculation position is selected, air from the passenger compartment passes through the heating system and is heated or cooled depending on the selected function.
Outside (Fresh) Air Position
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When the outside (fresh) air position is selected, outside air enters the vehicle and is heated or cooled depending on the selected function.
Information
Prolonged use of the air conditioner with the recirculation position selected will result in excessively dry air in the passenger compartment.
WARNING
- Continued use of the climate control system in the recirculation position may cause drowsiness, which may lead to loss of vehicle control and cause an accident. Set the intake air control to the outside (fresh) air position as much as possible while driving.
- Continued use of the climate control system in the recirculation position (without air conditioner selected) may increase humidity inside the vehicle, which may cause the windows to fog and reduce visibility.
- Do not sleep in the vehicle with the air conditioner or heater on. This may result in serious injury or death due to decreased oxygen levels and/or body temperature.
Test yourself
A quick Hyundai Sonata LF quiz: every answer comes with an explanation and a link to the manual page.
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