If its inside the lense you can try removing it, unhooking the wiring harness and toss in a bag of rice a few days. If it clears up, you have a crack in the housing and can try to epoxy over it.
The top Hyundai Veloster Forum to discuss your favorite 3 door car including the Veloster Turbo and Veloster N, as well as check out users mods to make the Hyundai Veloster faster!