IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

Headlights yellowing from inside?

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Old 05-24-12, 11:37 AM
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is250jz
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Default Headlights yellowing from inside?

Is anyone experiencing this issue with their 2IS?
Old 05-24-12, 12:03 PM
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accelerate
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Not from the inside, but only the outside. Outside is a easy fix Never heard from the inside .
Old 05-24-12, 05:28 PM
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Jzsicklexi
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Post pics... I'm sure it gotta be on the outside but it just looks that way. If not then you have to take them apart then buff them
Old 05-24-12, 11:06 PM
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faisal11ir
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this is exactly why i got new 2008 headlights... 2007 headlights are really bad i even cleaned them from inside but no good.
Old 05-25-12, 10:15 AM
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kingster
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Bought a used headlight a few years ago. It did not have back covers. I figured no need for them.
Now I regret not buying back covers then. Yes, the inside got kind of yellow because dust and humididty got inside. There is a three year old dead insect in there too.
Do yours have back covers or have they been modified in any way that there may be an opening letting mosture/dust in them? That may be the reason for the yellowing inside of headlight.
Old 06-26-12, 11:45 AM
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is250gurl
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mine seem to be yellowing on the inside also as the outside is clear and clean. it's very noticable when it's cloudy out.

Last edited by is250gurl; 06-26-12 at 11:50 AM.
Old 06-26-12, 01:52 PM
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G85
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Mines yellowing/misty in the inside a bit. Tried a headlight restoration kit so I know its inside.

I have to bake it in the oven and take off the front cover to clean it?
Old 12-17-18, 05:38 PM
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jessycrazy
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Default See this is inside yellowing :( I don’t know how to clean it

Originally Posted by accelerate
Not from the inside, but only the outside. Outside is a easy fix Never heard from the inside .

Old 12-18-18, 09:25 AM
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timmy0tool
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many ways...here's one!
Old 12-18-18, 09:52 AM
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Zmon
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Old thread... but, if the yellowing is inside the lens and not outside, you'll have to open the headlights up and do a refinish (would also highly advise a UV-resistant clear coat applied after refinishing). Might be better off just buying a new set of lights though.
Old 07-29-24, 11:33 PM
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pman6
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Did anyone actually bake open their headlight and polish the inside?

I'm looking for before and after pics.
Old 07-29-24, 11:50 PM
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LeX2K
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Don't have pictures but I've done it. I painted both the inside and outside with 2K clear.
Old 07-30-24, 10:17 AM
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Protholl
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Originally Posted by pman6
Did anyone actually bake open their headlight and polish the inside?

I'm looking for before and after pics.
If you are taking them apart you know that you can buy new plastic lenses for them, right?
Old 07-30-24, 10:05 PM
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pman6
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Originally Posted by LeX2K
Don't have pictures but I've done it. I painted both the inside and outside with 2K clear.
were your headlights yellow on the inside?
Old 07-30-24, 10:08 PM
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pman6
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Originally Posted by Protholl
If you are taking them apart you know that you can buy new plastic lenses for them, right?
I have another lexus model, and for my car, new lenses cost about as much as a whole new headlight assembly.

so I want to see if polishing will help.

Since my car has been parked outside for 21 years in socal, the headlights are milky and slightly yellow even after sanding and polishing.

I'm not sure if I have to sand more from the outside, or if the inside is damaged, or if the full thickness of the polycarbonate is just not super clear anymore


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