This button is used to select the outside (fresh) air position or recirculated air position.
Recirculated air position
The indicator light on the button illuminates when the recirculated air position is selected.
With the recirculated air position selected, air from the passenger compartment will be drawn through the climate control system and heated or cooled according to the function selected.
Outside (fresh) air position
The indicator light on the button will turn off when the outside (fresh) air position is selected.
With the outside (fresh) air position selected, air enters the vehicle from outside and is heated or cooled according to the function selected.
Information
Prolonged use of the air conditioning with the recirculated air position selected will result in excessively dry air in the passenger compartment.
WARNING
Hyundai Sonata LF 2014-2019 Owners Manual: Tire Replacement
If the tire is worn evenly, a tread wear indicator will appear as a solid band
across the tread. This shows there is less than 1/16 inch (1.6 mm) of tread left
on the tire. Replace the tire when this happens.
Do not wait for the band to appear across the entire tread before replacing the
tire.
W ...
Hyundai Sonata LF 2014-2019 Service Manual: Rear Seat Belt Buckle Components and Components Location
Component Location
1. Rear seat belt buckle [RH]2. Rear seat belt buckle [LH]
...