Looks like your side marker light is out. It's the 4th bulb in your headlight assembly - the farthest one to the back. Its a W5W 12v 5 watt bulb. Doesn't show up on the headlight component image. Be careful taking it out - it sits up on a "pedestal" and the contacts in the base only work one way. There are LED replacements for it that will last much longer.Anyone know what type of light bulb it use and is it replaceable? my 2014 Elantra Sport part of the running light goes off. see the picture.