So 2 days ago I start my day.. turn on my headlights, get a fault code on dash and passenger side low beam is out. Try replacing bulb, but still doesn't work. Check L2 fuse, looks good. As I'm doing pretrip, I also notice rear passenger running light is out. I know very little about electrical issues. Any ideas or suggestions would be appreciated.
Easiest fix is to buy a fuse checker or something like this Advance Auto Parts - Down for Maintenance and just check all your fuses in the boxes. If thats not the problem then i would go to a dealer as it could be almost anything.
On mine it was an internal circuitry issue. Got water inside the housing and shorted something and couldn’t fix it. Required a new headlight housing to fix. $500.