OEM LED lifespan

The low beam on my passenger side LED light went out recently. It’s a 2020. I would think the lifespan would have been longer than the 4 years. No recent upgrades, and I only have a pair of BD lights I use for the rear and they’ve been on the truck for a while now.

 

Did you verify it was out? Do you have 12V on the blue wire (the one next to the yellow wire, above the white/black wire) when the low beams are on? It’s definitely possible the LED went out, but 4 years is a quick death for sure.

 

I haven’t checked that. I did check the fuses and none of them were burned out. So I wasn’t sure where to go from there.

 

I'd start with checking the 10A H–LP RH–LO fuse.
Test light would make quick work here.
Then check power and ground at the light.

A test light here will help too.
But a meter will work.

 

If the fuse is good, you probably have 12V there, but still check it. It could be as simple as reseating the connector as well.

 

Just checked the fuse again and there wasn’t one in that slot. Put the spare in and now all is well with the world. Thanks so much for the help!

 

For reference, most OEM LEDs are rated on the par of 50,000 hours. If you were to drive with your lights on for 4 hours a day, every single day and never miss a single day, they should last about 34.25 years. 4 hours x 365 days is absolutely crazy, that is 1,460 hours a year. I run headlights at about 200 hours a year, meaning the OEM LED headlights should last me about 250 years. Needless to say it is basically a lifetime part for the truck and shouldn't need replacing.

 

That means the light has not been operating in a while ever since the fuse slot becomes empty?
Glad you got it figured out

 

Emitter itself can 50,000+h expectancy at ideal operating condition, but what drives that emitters are still standard electronics, life expectancy as system is governed by life of weakest link. Capacitor like component life has operating temp dependency heavily. Thermal grease can age over time, increase thermal resistance. I believe OE LED unit is passive cool design? I observed 20+% of flux drop at 15min mark. this usually indicate junction temp to be around 120+C Bit higher side compare to active cooling design typically target around 85~100C Maybe LED driver dies faster than LED array itself. So as system, something like 5000h mark to be initial good batch survival span( depend on usage of course), then some continue to perform, some start failing more frequently is my prediction. At that point, headlamp lens is the one cause optical degrade more than anything eles.