Automatic Ventilation (if equipped)
When the ignition switch is in the ON position or when the engine is running and temperature is below 59°F (15°C) with the recirculated air position selected more than five minutes, the air intake position will automatically change to the outside (fresh) air position.
To cancel or reset the Automatic Ventilation
When the air conditioning system is on, select Face Level
mode and while pressing the A/C button,
press the recirculated air position button five times within three seconds.
Sunroof Inside Air Recirculation (if equipped)
When the heater or air conditioning system is on with the sunroof opened, the outside (fresh) air position will be automatically selected. At this time, if you press the recirculated air position button, the recirculated air position will be selected but will change back to the outside (fresh) air position after 3 minutes.
When the sunroof is closed, the air intake position will return to the original position that was selected.
Hyundai Elantra AD (2016-2020) Owners Manual: Manual Heating and Air Conditioning
The heating and cooling system can be controlled manually by pushing buttons
other than the AUTO button. In this case, the system works sequentially according
to the order of buttons selected.
When pressing any button except the AUTO button while using automatic operation,
the functions not s ...
Hyundai Elantra AD (2016-2020) Owners Manual: Fan speed control / Air conditioning
Fan speed control
The fan speed can be set to the desired speed by turning the fan speed control
knob.
The higher the fan speed is, the more air is delivered.
Pressing the OFF button turns off the fan.
Information
For better sound quality, fan speed may automatically slow down for a couple ...