Headlight Condensation? Assistance Needed
Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
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From: Los Angeles, CA
2015 C400 Tenorite Gray
Headlight Condensation? Assistance Needed
So I bought brand new headlights and pretty much from the beginning there was some fogging in the lens. I have had these for about 6 months
Is this normal due to the heat from the bulb? Any assistance is appreciated.
Is this normal due to the heat from the bulb? Any assistance is appreciated.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
Likes: 44
From: Los Angeles, CA
2015 C400 Tenorite Gray
Here is the back cover. The seal looks pretty thin! 
Is this normal? does not seem so.
Is this normal? does not seem so.
Last edited by Nicholi2007; Jun 22, 2014 at 01:33 AM.
Senior Member
Joined: Mar 2010
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2016 S550
Unless he's talking about the top part by the eyebrow area? Looks a bit "fogged" there..
The white circle in front of the light is just light hitting the surface, the specks are tiny rock chips or surface abrasions.
Typically, if you have condensation issues in any headlight assembly, moisture has gotten into your headlight housing. This may be when you installed new bulbs, or there is a leak, etc. To get rid of the moisture in the air that is inside the headlight, you need to heat it up, this can be done by turning on the lights for a period of time, you open the covers to let the moisture evaporate out, rather than collect on the lenses and become condensation. Once the moisture is evaporated out, you put back the covers and you shouldn't have that issue anymore. If you do, there is probably another leak somewhere...
The white circle in front of the light is just light hitting the surface, the specks are tiny rock chips or surface abrasions.
Typically, if you have condensation issues in any headlight assembly, moisture has gotten into your headlight housing. This may be when you installed new bulbs, or there is a leak, etc. To get rid of the moisture in the air that is inside the headlight, you need to heat it up, this can be done by turning on the lights for a period of time, you open the covers to let the moisture evaporate out, rather than collect on the lenses and become condensation. Once the moisture is evaporated out, you put back the covers and you shouldn't have that issue anymore. If you do, there is probably another leak somewhere...
