2013 Hyundai Sonata Owner's Manual - Page 163

Features of your vehicle DEFROSTER CAUTION To prevent damage to the conductors bonded to the inside surface of the rear window, never use sharp instruments or window cleaners containing abrasives to clean the window. The indicator on the rear window defroster button illuminates when the defroster is ON. 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 ignition switch is turned off. To turn off the defroster, press the rear window defroster button again. If you want to defrost and defog the front windshield, refer to "Windshield defrosting and defogging" in this section. ✽ NOTICE OYF049110 Outside rearview mirror defroster (if equipped) If your vehicle is equipped with the outside rearview mirror defrosters, they will operate at the same time you turn on the rear window defroster. OYF049155 Rear window defroster The defroster heats the window to remove frost, fog and thin ice from the rear window, while the engine is running. To activate the rear window defroster, press the rear window defroster button located in the center facia switch panel. 4 82