Quote:
Originally Posted by GuidoK
The point of headlight washers is to keep the headlights clean in order to reduce glare/diffraction of light in unwanted directions. It has nothing to do with snow, but with dirt.
LED headlights are not required to have washers as the total light output of these LED's is below a certain value (2000 lumen). Xenon bulbs go above that. (and tungsten obviously also below that).
That rule still stands and hasn't changed. (So if a car should have LED lights with an output above 2000 lumen, it would require the washers)
This is btw an european rule; afaik in the US, the washers aren't required at all.
European ruleset:
https://eur-lex.europa.eu/legal-cont...1X1206%2803%29
Ruleset for the washers itself:
https://www.google.com/url?sa=t&rct=...6KbYukl7zbPsPP |
The regulations changed in Oct 2017.
It was:
Vehicles without AFS, HID Light Source, output >2000lm = Cleaning System and Self Leveling Beam Inclination System.
Vehicles Without AFS, Solid State (LED), output <2000lm = Self Leveling Beam Inclination System
Vehicles Without AFS, Solid State (LED), output >2000lm = Self Leveling Beam Inclination System + Headlamp Cleaning System
Vehicles with AFSi (Dual Dynamic Self Leveling Beam Inclination Systems), HID or Solid State Lighting (>2000lm) = Cleaning System no longer Required.