- Mercedes-Benz: How to Repair foggy headlights
Step by step instructions for do-it-yourself repairs
3M Headlight Restoration: Before and After
Before:

After:

I was very pleased with the results. I'm glad I had two more kits left. With the size of the W211 headlights and the amount of material that needed to be removed, I used one kit for each side of the vehicle.
Before:

After:

Again, I was very pleased with the results. I spent an hour on each headlight including preparation. I put two layers of masking tape around each lens in case the drill got away from me.
I used wet/dry auto body sand paper. Wetted the lens and the paper. Started with 400 grit, then 600, 1000, 1500, then 2000. Went over each lens twice with each grit; 400 twice, then 600 twice, etc-etc, wiping the lens after each time. Followed up with a clear coat body scrub compound and then finally with "Scratch-X".
A world of difference. I'm pretty sure there is some kind of anti-reflection or anti-scratch coating on the lens and it's that coating that gets cloudy.
Dan
I might be wrong, but even though you did the right thing by sanding the plastic and polishing it, they might tarnished and get cataracts quicker now that the original harder finish is gone.
When my lens covers get too beat up, I will peel them off and put new ones on.
Steve
ss3964spd, I used the wet/dry sand paper years ago on other headlights with good results. Figured I'd give the 3M kit a try this time. There's definitely a coating on the lens. I had to sand it completely off to get a uniform surface to polish.
SAguirre, you're right. They will get "cataracts" quicker now that I sanded away the coating. I've been thinking I should apply a clear film to them sooner rather than later. Thanks for the link to www.performanceproducts.com.
Thanks for the comments.




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This is the thing, I own a 2003 E320… First the left turn signal stop working (just the front one) I took it to several shops, but not to MB special mechanic since in the place I live there’s not MB Certified shop…
Nobody has been able to locate the problem, and just a couple of days ago, the other side stopped working too… of course we already tried changing the light bulbs, but that’s not the problem…
The instrumental cluster display is showing that the lights are out as well… I appreciate any advice…
Djbory
P.S. I’ve been trying to buy a front license plate bracket like the one on gaazmon picture, I haven’t been able to locate one on the internet… Any leads?
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Djbory
Use wet-sanding with 1000/1500 grit and fianl polishing with Flitz.
Spent an hour on each side, but not too happy with the end result.
Should have gone with a package product like the one described above, or Maquires head-lamp restorer.
The Flitz thing was recommended by a lady in the hardware store as I was shopping for a kit..As usual I can't say no to a femme..
4 steps:
300 then 800 then 3000 w/ water and the final step was the kind of orange spunge with a polish cleaner on it - standard kit
Had a lot of work cause Chicago's weather killed my headlights but it was worth it.....
don't be afraid about sending the surface of the lamp...
hubi
What is causing this hazing of the front headlights?
Is this hazing covered under the factory warranty or is it considered wear and tear?
just my guessing......
There's another way of performing that work: Novus plastic cleaner. I've attached a link to Novus info at the end of this note. You can get it at any motocycle store ... bikers use the stuff to clean their Lexan or acrylic windshields and goggles. I've seen it at WalMart, also. We used the same stuff (less the name brand markings) in Naval Aviation to clean aircraft canopies. I use it for my bike's windshield, my goggles, my Kubota RTV acrylic windshield, and my vehicles' headlight covers.
Squirt a dab of Novus on a clean, soft towel, spread it on the headlight cover and rub it around the cover, then polish off with a clean, dry towel. Simple as that.
http://www.novuspolish.com/
Step 1) Compound on
Step 2) Buff Out
-Wipe with cloth towel-
Step 3) Wax on
Step 4) Buff out
-Wipe with cloth towel-
Came out flawless, took me 3-4 minutes each cover.









