2022 Hyundai Tucson Windshield Defrosting and Defogging
Windshield Defrosting and Defogging
WARNING
Windshield heating
Do not use the 
position during cooling operations in extremely humid weather. The difference between the temperature of the outside air and that of the windshield could cause the outer surface of the windshield to fog up, causing loss of visibility and could cause an accident resulting in serious injury or death. In this case, set the mode selection button to the position 
and fan speed control knob to a lower speed.
- For maximum defrost performance, set the temperature control to the highest temperature setting and the fan speed control to the highest setting.
- If warm air to the floor is desired while defrosting or defogging, set the mode to the floor-defrost position.
- Before driving, clear all snow and ice from the windshield, rear window, side-view mirrors, and all side windows.
- Clear all snow and ice from the hood and air inlet in the cowl grill to improve heater and defroster efficiency and to reduce the probability of fogging up the inside of the windshield.
NOTICE
If the engine temperature is still cold after starting, then a brief engine warm-up period may be required for the vented airflow to become warm or hot.
Manual climate control system
To defog inside windshield
- Select any fan speed except “0” position.
- Select the desired temperature.
- Press the defroster button ( ).
- The outside (fresh) air will be selected automatically. Additionally, the air conditioning (if equipped) will automatically operate if the mode is selected to the position.
If the air conditioning and outside (fresh) air position is not selected automatically, press the corresponding button manually
To defrost outside windshield
- Set the fan speed to the highest (extreme right) position.
- Set the temperature to the extreme hot position.
- Press the defroster button ( ).
- The outside (fresh) air and air conditioning (if equipped) will be selected automatically.
Automatic climate control system
To defog inside windshield
- Select the desired fan speed.
- Select the desired temperature.
- Press the defroster button ( ).
- The air-conditioning will turn on according to the detected ambient temperature, outside (fresh) air position and higher fan speed will be selected automatically.
If the air-conditioning, outside (fresh) air position, and higher fan speed are not selected automatically, adjust the corresponding button or knob manually.
If the position is selected, lower fan speed is controlled to higher fan speed.
To defrost outside windshield
- Set fan speed to the highest position.
- Set temperature to the extreme hot (HI) position.
- Press the defroster button ( ).
- The air-conditioning will turn on according to the detected ambient temperature and the outside (fresh) air position will be selected automatically.
If the position is selected, lower fan speed is controlled to higher fan speed.
Auto Defogging System on Models with Automatic Temperature Control
Auto defogging help reduce the possibility of fogging up the inside of the windshield by automatically sensing the moisture on inside the windshield.
The auto defogging system operates when the heater or air conditioning is on.
Information
The auto defogging system may not operate normally when the outside temperature is below 14°F(-10°C).
To cancel or set the Auto Defogging System, keep the front defroster button pressed for 3 seconds. The “ADS OFF” symbol will be shown in the climate display to inform you that the system is deactivated. To re-activate the auto defogging system, follow the procedure mentioned above and the “ADS OFF” symbol will disappear. If the battery has been disconnected or discharged, it resets to the auto defogging status.
Information
For efficiency, do not select recirculated air position while the Auto defogging system is operating
NOTICE
Do not remove the sensor cover located on the top of the windshield glass. Damage to system parts could occur and may not be covered by your vehicle warranty.
Rear window defroster
NOTICE
To prevent damage to the rear window defroster conducting elements bonded to the inside surface of the rear window, never use sharp instruments or window cleaners containing abrasives to clean the window.
The defroster heats the window to remove frost, fog and thin ice from the interior and exterior of the rear window, while the engine is running.
- To activate the rear window defroster, press the rear window defroster button located in the center control panel. The indicator on the rear window defroster button illuminates when the defroster is ON.
- To turn off the defroster, press the rear window defroster button again.
Information
- If there is heavy accumulation of snow on the rear window, brush it off before operating the rear defroster.
- The rear window defroster automatically turns off after approximately 20 minutes or when the Engine Start/Stop button is in the OFF position.
Side view mirror defroster (if equipped)
If your vehicle is equipped with the Side view mirror defrosters, they will operate at the same time you turn on the rear window defroster.