The same thing happened to me. It was a fuse. If you have the manual, take a look at it. The fuse box is under the hood, on the firewall on the driver's side. You unscrew two knobs, and then remove the plate cover. there should be a card inside that tells you which fuse is for what. My fuse was visibly damaged. There may be some extra (new) fuses in there. They will be inside some holes. However, you have to replace the fuse with the same color fuse. For the turn signals, the fuse is white.