This indicator light illuminates:
Hyundai Sonata LF 2014-2019 Owners Manual: Climate control additional features
Automatic Ventilation
When the ignition switch is in the ON position or when the engine is running
and outside temperature is below 59°F (15°C). At the same time, when A/C mode is
off and mode is Bi-Level or Floor mode with the recirculated air position selected
more than five minutes, the air ...
Hyundai Sonata LF 2014-2019 Owners Manual: Air ventilation seats
The air ventilation seats are provided to cool the front seats by blowing air
through small vent holes on the surface of the seat cushions and seatbacks.
When the operation of the air ventilation seats are not needed, keep the switches
in the OFF position.
While the engine is running, push the sw ...