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Cleaning up cloudy yellow headlights

Discussion in 'Knowledge Base Articles Discussion' started by fotomoto, Jun 9, 2018.

  1. fotomoto

    fotomoto Senior Member

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    So, modern headlight assemblies cloud over and yellow after a few years of UV assault. Lots of solutions out there from very high dollar replacement of the headlights with new assemblies to just a few bucks. This one is one of the latter solutions. I simply use rubbing compound found in most automotive sections and it works GREAT!

    I use the turtle wax rubbing compound brand only because I already had it on the shelf but I assume any other will work just as well. Next, a circular foam pad for drills found at most auto parts stores, some tape (blue painters tape is the best as it leaves no residue) and an electric drill are all the items needed. NOTE: you can do this by hand but it takes longer and requires a lot of elbow grease but will cost even less.

    Tape off the areas around the headlight to keep unnecessary polishing of the paint that's in good condition. If your paint is poor, I guess it's not that important as it will get some polishing too.
    IMG_3590.JPG

    Apply 3-4 dime to quarter coin sized spots of compound around the headlight assembly. Run the drill very slowly at first to evenly spread the compound over the surface. Gradually ramp up speed to medium to polish the surface. TIP: if you ramp up the speed to quickly or over apply, it will sling bits of compound everywhere.


    IMG_3597.JPG




    This will take a few minutes and you'll magically see the surface clearing up. As it dries, go to full speed to maximize the polishing effect. That's it!

    Go from this:

    IMG_3592.JPG




    To this in a matter of a few minutes!

    IMG_3593.JPG
     
    #1 fotomoto, Jun 9, 2018
    Last edited: Jun 9, 2018
  2. Raytheeagle

    Raytheeagle Senior Member

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    I used Wipe New last year in our 2010 and got similar results :).

    For $10 on Amazon, it’s another cost effective solution;).

    Remove the haze to ensure you have the best chance of seeing things possible(y).
     
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  3. 05PreeUs

    05PreeUs Senior Member

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    Looks like I have yet another item on my to-do-list for the next week :D
     
  4. Mendel Leisk

    Mendel Leisk Senior Member

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    How's it holding up Ray? If it's not to hard to do, and a redo every year or two is enough, maybe it's the solution.
     
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  5. Raytheeagle

    Raytheeagle Senior Member

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    Seems to be ok:
    BFD75CA1-E595-4038-8062-6121E27ACF7D.jpeg

    I left a strip on the passenger side for comparison (or so I say:whistle:):
    7C6EC83E-F9FD-472D-A1BE-E1F044F0ECEC.jpeg

    I’m contemplating doing it again next spring as it’s getting cloudy again:(.

    But for $9 and an hours labor, every 2 years ain’t too bad(y).
     
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  6. 05PreeUs

    05PreeUs Senior Member

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    As I understand it, the lenses are coated during production for UV protection and this is what yellows over time (coating quality differs obviously). Remove the coating with an abrasive and the lens itself has no protection from UV.

    It's still better to have unprotected, but clear headlamp lenses, than protected obscured ones.
     
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  7. WilDavis

    WilDavis Senior Member

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    Good tips, thanks for sharing! I use the Chris Fix Method (see YouTube) which is basically the same, but adding a layer of ClearCoat will help prevent the plastic yellowing in the future!
     
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  8. 05PreeUs

    05PreeUs Senior Member

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    Yea, I just wish I would have cleaned and coated mine when I had the housings out to replace the bulbs. I just don't have the motivation to go thru that again :notworthy:
     
  9. Mendel Leisk

    Mendel Leisk Senior Member

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    Is there some techinical reason they can't make headlight housings out of glass? Too expensive? Too fragile? Not sure, but seems like they would last better.
     
  10. Raytheeagle

    Raytheeagle Senior Member

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    They would withstand UV factors better;).

    That’s why the windshield is a composite. Other panes are glass though :).

    Unless you want to have the old cages or electrical tape affixed to the lease to keep it together when the inevitable happens.
     
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  11. 05PreeUs

    05PreeUs Senior Member

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    One word.... WEIGHT.

    Lenses the size of those on modern cars would weigh a TON. The headlamp "modules" on most modern vehicles weigh about the same as a single old glass hi/low bean headlamp, or even less.
     
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  12. fmerkel

    fmerkel Member

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    I miss old glass headlights. Universal, cheap, easy to replace, did NOT yellow, worked fine. One of the banes of modern technology is it's geared toward sales and manufacturing efficiency. No one seems to give a damn about repair.....and just about everything needs repair sometime.
     
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  13. Mendel Leisk

    Mendel Leisk Senior Member

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    Yeah that's where I was going.
     
  14. dubit

    dubit Senior Member

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    If people would just hand wax these once in awhile they'd never "yellow up" to begin with. Thing is, not many people hand wax their vehicles anymore.
     
  15. 05PreeUs

    05PreeUs Senior Member

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    Most "wax" does not provide much UV protection and those that do, offer substantially less than the coating *should* provide. Commercially available coatings can keep lenses clear for well over a decade even at the exposure levels in AZ.

    Problem is, the owner or OEM won't know the vendor skimped until it is way too late.

    But yes, wax will help and I am pretty sure aggressive chemical cleaners used by touchless car washes are a contributor to the coating failures.
     
  16. Mendel Leisk

    Mendel Leisk Senior Member

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    That woke me up, found this in the Owner's Manual (3rd gen, page 406):

    upload_2018-10-28_9-16-25.png

    Could be concern about abrasives? Or the solvents?
     
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  17. 05PreeUs

    05PreeUs Senior Member

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    I think the abrasives, they are common in most waxes, but nothing I would use ;)
     
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  18. Merv Himself

    Merv Himself Junior Member

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    Excellet, Fomoto. I did a variation of this by removing the old yellowed sealant with very fine sandpaper. In my case, I finished the job by protecting the cleaned headlights with a UV Resistant Clear Coat. Might be worth considering.
     
  19. Merv Himself

    Merv Himself Junior Member

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    I'm with ya! Glass was best. Everything these days is "disposable". And they wonder why the landfills are full.
     
  20. dubit

    dubit Senior Member

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    Hmm, never knew that. I’ve waxed them for years now with no I’ll effects and no headlight yellowing.
     
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