Hyundai Elantra: Fog light bulbs (if equipped) - Headlight, position light, turn signal light, side marker light and front fog 
light bulb replacement - Light bulbs - Maintenance - Hyundai Elantra MD 2010-2015 Owners manualHyundai Elantra: Fog light bulbs (if equipped)

If the light bulb is not operating, have the vehicle checked by an authorized HYUNDAI dealer.