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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Cosmetic and Lighting Modifications (exterior/interior) > Xenon headlight letting moisture inside



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      03-10-2012, 05:55 PM   #1
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Xenon headlight letting moisture inside

So i installed my xenons today and then i took my car to get washed. When i got it back I noticed some condensation inside my passenger side headlight. I looked at the back cover and I noticed that one of the small raised pieces of plastic has broken off. So part of the back cover has nothing to grab on to and it is not sealed all the way.

So am I screwed? or can should i get some velcro and zip ties to properly seal it?

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      03-10-2012, 09:55 PM   #2
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Just buy a new cover. I think it's like $20 or something like that
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      03-10-2012, 10:03 PM   #3
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Quote:
Originally Posted by Alpineweiss e90 View Post
Just buy a new cover. I think it's like $20 or something like that
Its not the cover that is broken. It is the tab on the headlight, which connects to the cover, that has broken off.
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      03-10-2012, 10:07 PM   #4
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Here you can see some of the minor condensation that has built up.

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      03-12-2012, 11:01 AM   #5
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Sry for hijacking thread.

respectBMW - where can i get a new lens to replace my cracked lens?
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      03-12-2012, 11:24 AM   #6
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I had this exact problem, the previous owner or some incompetent service person broke that little thing off. Depending on which clip it is, you may be able to still have an airtight seal as long as all the other clips are on tight. Just to be safe, you can do what I did and get a tube of silicone sealant and apply it on the loose side. It's waterproof and comes off easy in case you ever need to get in there again.
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      03-12-2012, 11:53 AM   #7
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Sry for hijacking thread.

respectBMW - where can i get a new lens to replace my cracked lens?
The headlights are a one-piece assembly so I'd be surprised if you could buy a replacement cover. In order to replace the cover you'd have to crack the housing open, replace, then reseal it to be airtight or moisture will get in. You're better off replacing the headlight.
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      03-12-2012, 12:10 PM   #8
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Quote:
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The headlights are a one-piece assembly so I'd be surprised if you could buy a replacement cover. In order to replace the cover you'd have to crack the housing open, replace, then reseal it to be airtight or moisture will get in. You're better off replacing the headlight.
I have the adaptive assembly. its gonna cost me 1200 to replace........

Can you recommend where i can get aftermarket? I will probably replace both in this situation....
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      03-12-2012, 12:31 PM   #9
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I have the adaptive assembly. its gonna cost me 1200 to replace........

Can you recommend where i can get aftermarket? I will probably replace both in this situation....
Tough question. Depo Projector headlights ( http://www.ebay.co.uk:80/itm/BMW-E90...item35aeae247e) are popular and run $400 to $500 for a set but I don't know if you can PNP them with adaptive headlights without codes or not. Most of the people who get them are upgrading from halogens.
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      03-12-2012, 12:45 PM   #10
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Give it a day or two. Any time you open the cover (to install bulbs, etc.), you are trapping some moisture in there. Let it evaporate and leak out. If it doesn't clear up, then you have a problem. It's very common for those tabs to break but the cover will still seal up just fine.
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      03-12-2012, 01:11 PM   #11
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Quote:
Originally Posted by Bendercle View Post
I had this exact problem, the previous owner or some incompetent service person broke that little thing off. Depending on which clip it is, you may be able to still have an airtight seal as long as all the other clips are on tight. Just to be safe, you can do what I did and get a tube of silicone sealant and apply it on the loose side. It's waterproof and comes off easy in case you ever need to get in there again.

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Give it a day or two. Any time you open the cover (to install bulbs, etc.), you are trapping some moisture in there. Let it evaporate and leak out. If it doesn't clear up, then you have a problem. It's very common for those tabs to break but the cover will still seal up just fine.
Thanks for the replies. The moisture is completely gone. Just to be safe I bought some industrial strength velcro and now the back cover is sitting very firm now. I hope that solves the problem.
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      03-12-2012, 01:40 PM   #12
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If it does not I'm always here to buy those headlights.
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      03-12-2012, 02:24 PM   #13
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If it does not I'm always here to buy those headlights.
I have a set with 200 miles on it. Pre-LCI w/ AHL. Interested?
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      03-12-2012, 02:30 PM   #14
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If it does not I'm always here to buy those headlights.
Yeah..no way. You better buy from Nivedh.
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      03-12-2012, 03:05 PM   #15
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Quote:
Originally Posted by PINeely View Post
The headlights are a one-piece assembly so I'd be surprised if you could buy a replacement cover. In order to replace the cover you'd have to crack the housing open, replace, then reseal it to be airtight or moisture will get in. You're better off replacing the headlight.
What i mean by cover is the back dust cover that you have to open when you want to replace a bulb.
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      03-12-2012, 06:27 PM   #16
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Well it started raining and no moisture got into my headlight. So it looks like everything is holding up.
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