Question about Volkswagen Passat

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Sun damaged / faded headlamp lenses on VW passat i have been told that it can be polished out and then have a film applied i would like to nkow about specific products and process to restore lense

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Thers a product i use, this is made by 3m, its a 4 step product, first you sand, then sand again with a finner sand paper then you use a wheel with a cleaner on it and last you polish the lens and it comes out good, the key is to sand it good and take your time, napa sells this product, this kit comes with everything all you need is a drill,a good drill. good luck, also if you google 3m headlight restoration you will see theres even a video on youtube that will pop up, becareful theres a kit for 379.00 thats not the one, the kit i speak of is about 25.00 and will do a few sets of lights maybe two.heres a picture of it. damaged / faded headlamp - johnjohn2_81.jpg

Posted on Mar 17, 2011

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When I'm looking for a benchmark against which to compare other products, I'll use (I dont work for any retailer).

HFT #65938 $12.99 (HFT Headlamp Restoration Kit) - polishes 2 headlamps
HFT #67723 $19.99 (3M Lens Renewal Kit) - renews 2 headlights

The process used is that of any polishing process - progressively finer grit abrasive pads
buffered with a polishing compound, applied with an attachment to your cordless drill.

My really important note of advice:
if the instructions say "do X for 3 minutes", do not take any shortcuts, do per instructions
and count to yourself "1-1000, 2-1000" etc. to be sure.

Posted on Mar 17, 2011

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Replace headlamp lenses on 99 merc marq

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Headlamp lense Restoration

For the past year I have been experimenting with different ways of restoring hazy and yellow headlamps to there original crystal . This is an easy project for the do it yourselfer and would take approximately an hour or two to make them like new.

First step is to clean them with any mild detergent. Glass cleaner will work just fine. Next I tape off all of the painted areas that I don't want to accidentally hit with the sand paper. Now the fun begins. Starting with 400 grit wet/dry sandpaper I wet sand each lens until all of the degraded plastic is removed. You will see what I am talking about once you start to sand. I then clean the area again to remove any grit leftover from the sanding. Then I go to 500 grit wet/dry sandpaper and generously sand each lens again. You will start to see the lens begin to have an even white frosted look.

I then move on to 800, 1000, and finally 3000 grit sandpaper. Making sure to wipe down the lenses after each sanding. Throughout these stages you will start to notice the lens getting clearer and clearer. the key to these three sandings is patients and be thorough. These three will determine how good the lenses look after the final polishing.

There are many kinds of plastic polishes available. Maguires and 3M are pretty good, I personally use a product that Cornwell Tools has. This will be the most labor intensive part of the job. I have a mini polisher so it goes pretty quick for myself but it can still be done by hand with the same results. Polish until crystal clear! You may notice a few places that you missed after polishing, just repeat the above steps and they will look like new.

The last step is to seal the lenses. Wynns makes a headlamp restoration kit that is well worth the money just for the sealer. Apply 3 coats of this stuff and the lenses will keep there like new look for easily a couple of years. Make sure the lenses are clean and dry before you wipe it on.

Here are the latest before and afters. This was a 99 Chrysler Town & Country and took me about an hour to get them 99% perfect!!


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My 320D which I bought new in 2005 about two years ago both front headlights started to appear "faded" on the outside, almost as though scouring had taken place. They have deteriorated seriously...

This is caused by ultraviolet light from the sun. Ozone in the air does not help either.
There are two types of product that are intended to remove the most oxidized layer from the surface of the plastic. There are mild abrasive polishes that you apply with a rag and a lot of work, and there are kits that have sandpaper disks that you use with a drill.
In your case, those lenses probably came with a plastic film on the outside of the headlight lens. That film is tough. I have removed it with a sandpaper kit and a drill, but it took all afternoon.

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