Volvo have had lights that need coding to the car for a few years too. I think it is to do with CanBUS, where each unit is a module that needs to talk to the car. The equivalent of our proxy alignment is probably all that is needed, but each manufacturer will speak their own language. Even if the light cost £50, it would still need the alignment coding. Maybe not necessary for halogen lamps, only the LEDs.
If I had an LED headlamp fail after only 4 years, I'd be expecting the manufacturer to be subsidising the cost quite significantly.
Edit: If a headlamp might scrap a 4-year old car, its used value will plummet. Which will impact new sales. Mnaufacturers have found this in the past, but all have short memories.
If I had an LED headlamp fail after only 4 years, I'd be expecting the manufacturer to be subsidising the cost quite significantly.
Edit: If a headlamp might scrap a 4-year old car, its used value will plummet. Which will impact new sales. Mnaufacturers have found this in the past, but all have short memories.