Air Intake Control
Recirculated Air Position
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When the recirculated air position is selected, air from the interior will be drawn through the heating system and heated or cooled according to the selected function.
Outside (Fresh) Air Position
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When the outside (fresh) air position is selected, air is drawn in from outside the vehicle and heated or cooled according to the selected function.
Information
Operating the system in Fresh mode is recommended in most cases. Use recirculation mode temporarily only when necessary.
Operating the heater in recirculation mode without the A/C ON for a long period may cause the windshield to fog up.
In addition, prolonged use of the A/C with recirculation mode selected may result in excessively dry, dehydrated air in the cabin and may contribute to a stale ventilation odor due to stagnant air.
WARNING
- Continued use of the climate control system in recirculation mode for a long period of time may cause drowsiness of the passengers in the cabin. This may result in loss of vehicle control, which may lead to an accident.
- Continued use of the climate control system in recirculation mode with the air conditioner off may allow humidity inside the cabin to increase. This may cause condensation to build up on the windshield and reduce visibility.
- Do not sleep in the vehicle or remain parked in your vehicle with the windows up and either the heater or air conditioner ON for extended periods of time. Doing so may increase the level of carbon dioxide in the cabin, which may result in serious injury or death.
Test yourself
A quick Hyundai Elantra CN7 quiz: every answer comes with an explanation and a link to the manual page.