So randomly my car’s low beams stopped working. My high beams, fog lights, turn signals, brake lights and reverse lights still work. Changed the relay and the bulbs and they still won’t work. What am i doing wrong? Can someone help?
Could be a faulty exterior lamp control (headlamp) switch as both lamps don't normally stop working at the same time. Do the lamps illuminate for the daytime running lights? There's one relay (R6) that feeds both low beam headlamps and a separate fuse (F10-driver/F12-passenger) for each.
If the daytime running lamps are still enabled on the vehicle then the low beam headlamps should automatically illuminate during the daytime and the headlamps, parking lamps, tail, etc. should illuminate at "night". Presuming the lowbeams fail to illuminate both automatically and when commanded through the headlamp switch. If that's the case could be a wiring issue of some sort.
If you have access to a tech2, check for body (B) codes,an ambient sensor or headlamp ground fault will show up there, play close attention to the low beam grounds as they share the same ground from a splice inside front lighting harness.you prob wont see it through an ohm meter as the ground will collapse under the amperage with the lamps on,you can remove socket/s and jump black wire to a good ground
I lost my low beams and fogs thanks to a bad ground. Fun thing to happen in the middle of the night. Dealer fixed for $400+ after I replaced bulbs, fuses and relays to no avail. The electrical gremlins showing up in this car are starting to spook me.