Don't suppose the article could be wrong could it. 
Is doesn't appear so -
http://eur-lex.europa.eu/legal-content/EN/ALL/?uri=CELEX:42011X1206(03)"6.2.9. Other requirements
The requirements of paragraph 5.5.2 shall not apply to dipped-beam headlamps.
Dipped-beam headlamps with a light source or
LED module(s) producing the principal dipped beam and having a total objective luminous flux which exceeds 2 000 lumen
shall only be installed in conjunction with the installation of headlamp cleaning device(s) according to Regulation No 45 (12).
With respect to vertical inclination the provisions of paragraph 6.2.6.2.2 above shall not be applied for dipped-beam headlamps:
(a) with LED module(s) producing the principal dipped beam; or
(b) with a light source producing the principal dipped beam and having an objective luminous flux which exceeds 2 000 lumen."
My parents new Merc has LED head lights and I don't think they have headlight washers. I wonder how Mercedes have gotten around the EU regulations.