I have a 2011 Sonata. A while back the driver side turn signal quit, I changed the bulb, it worked I moved on. A week and a half later the it went out again. When I looked at it I noticed it wasn’t blown so I tapped on the headlight cover and it came on. A week later it went out again and the passenger went out also and won’t come back on. I put a new bulb in the passenger and it still doesn’t work so it has to be a short. Any ideas?