Nobody wants to build an Everlasting Gobstopper. Companies will have a hard time making money if nobody every needs replacement parts.
LEDs last longer than their halogen counterparts. With an expected LED bult life of 100,000+ hours, I don't expect it to burn out before my extended warranty expires, I would expect the circuitry to go bad way before that. If everything is in one unit then you have to replace the whole unit instead of the failed circuit.
It's a win-win for the supplier and FCA:
1. It's easier to swap out the entire unit than replace bad components...saves on labor costs and the dealership can service more vehicles in the same amount of time (and make more money).
2. Dealerships don't have to staff skilled technicians to do those kinds of repairs.
3. It's easier for the supplier to make entire units. They make more money selling units instead of replacement parts.
I don't know if there's a test that the dealership can run to verify the LED headlamp circuitry to prove if it is the bulb or the circuitry. If they do then there's that small chance that I could be disappointed if...and that's a big if...an LED dies on me in the next 5 1/2 years.
I don't have my headlights selected to ON for DRL (only the white bars above and below my lights) so even if I used my headlights for 4 hours a day, 7 days a week, I still have 67 years to go until I reach 100,000 lamp-hours.
Just my .02