Hyundai Elantra HD: To defrost outside windshield
1. Set fan speed to the highest (extreme right) position.
2. Set temperature to the extreme hot (HI) position.
3. Press the defrost button ().
4. The air-conditioning will be turned on according to the detected ambient temperature and outside (fresh) air position will be selected automatically.
If the position is selected, lower fan speed is controlled to higher fan speed.