The headlight lenses on my 2002 are starting to yellow just a little. Aside from the cosmetic aspect, is this anything to be concerned about?
Not really but you may experience less light output. A bottle of plastic cleaner will get it looking new again something like this CanadianDriver Product Reviews Product Review: 3M Headlight Lens Restoration System
ive found that if you get it polished after another 5-6 years it will fade again, the cure for this is removing the lense itself and clearcoating it ( after a light sand ) , although this might be too expensive to even consider.
My dealer buffed mine so they don't look hazy, but they do look a yellow. Not horrible yellow, but I have seen some clear ones and they look amazing white. Can they be brought back chemically or otherwise? I got kind of a giggle after reading the bit about "after 5 or 6 years they will just be yellow again." (Lolz. Why bother?) Hello Eyore.