My next suggestion, swap the relays!!

 

Dear petrolheads, a miracle has happened!! All the lights are working again?!?!? At some point, I turned the high beams on and then off, and suddenly everything started working again. Now, 13 days later, everything is still working perfectly, and we drive it daily! How weird is that? Spooky!!…

 

Thanks everyone for your input! I'll go through all the tips once more, just to be sure, in case anything comes up. Gotta make sure everything keeps shining as it should!

 

Thank you for the follow up about your headlights working properly now.

 

When an incandescent light fails, it’s because the filament develops a break. In some cases it can flap around and may reconnect itself. Usually, it’s quite temporary, typically just a few flashes, but sometimes it can stick with surprising tenacity.

In any event, do not assume your good fortune to last. It’s not imperative, but a good idea, to replace both while you’re at it, because incandescent lamps have a somewhat predictable life, especially in an automotive OEM case, where they were likely manufactured together.