The Smart High Beam is a system that automatically adjusts the headlamp range (switches between high beam and low beam) according to the brightness of other vehicles and road conditions.
Hyundai Sonata LF 2014-2019 Service Manual: Instrument Cluster Schematic Diagrams
Circuit Diagram
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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 ...