This has been giving me trouble for over a year now. I replaced the bulbs 9 months ago twice, even claiming warranty on a pair because I thought the bulbs were defective. Turns out they're not, because I still have the same issue now. The bulbs worked for 3 months then stopped, and now they're taking turns randomly working on the left, right, and sometimes none work. These pictures are 3 weeks apart so it's a different story every few weeks whether or not one or the other will work. How do I even begin troubleshooting this? What do I ask the mechanic to check? Is it a wiring issue? Water getting into the headlamp? Leak somewhere??? 🙏🙏

2012 G37X AWD, 200,000KMs

 

1. Fuses - both under driver side panel + IPDM
2. Where did you get the replacement bulb, ballast + Igniter?

On mines, I had to replace the igniter for passenger but was testing it out from working driver side. The bulbs i bought from morimoto

GL

 

Almost a guarantee it's the bulbs. The 2012+ G is picky with what works well with them. What brand are the bulbs you bought? Philips or Osram is the best bet, there's been threads on here about it. The issue is even more pronounced on Canadian cars with DRL.