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Moisture in headlight

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Old 12-05-2009, 08:02 PM
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adg44
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Default Moisture in headlight

I just noticed this after I got done playing in the snow:



Only in the driver's side headlight, and it has never happened before. These are the original units, and the service records don't show any bulbs being replaced, so I doubt it's just that one of the housings isn't secured correctly.

Any ideas?

Oh, and another pic just for fun:

Old 12-05-2009, 09:32 PM
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ivangene
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pull the headlight out and see if the back has come loose or the blinker is out ? Thats a lot of water. I have a corner triangle which just started this game
Old 12-05-2009, 09:35 PM
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adg44
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To clarify, the water is on the outside, only the moisture is on the inside. Mostly over the fog light and then some at the bottom of the headlight housing above the turn signal.
Old 12-06-2009, 02:43 PM
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fpb111
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Turn the head/fog lights on for awhile and see if that drives the condensation out.
Old 12-06-2009, 03:37 PM
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adg44
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Originally Posted by fpb111
Turn the head/fog lights on for awhile and see if that drives the condensation out.
They both were on when the condensation got in there. It's fine today though. Quite odd. I'll have to pull the headlight assembly out and see if anything is not installed correctly. Would be quite surprised though since they are all factory bulbs in there and no one has touched it.
Old 12-06-2009, 04:10 PM
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Did you pull the car from a warm garage?
Old 12-07-2009, 12:05 PM
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adg44
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Originally Posted by rb101
Did you pull the car from a warm garage?
It was in my garage, but I wouldn't call it warm. Maybe 10-15 degrees warmer than it was outside?
Old 12-07-2009, 11:43 PM
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Edgy01
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Suggest you pull that unit from the car, bring it inside the house, and carefully check for intrusion areas. Seals have a tendency to dry out, leading to that problem. Get a hairdryer or heatgun (careful!) to slowly dry it out, or put it in your oven on a turkish towel at something like 150 or less if you have it. Then tackle the leak. Perhaps you can refresh the seals with silicon or even baby powder.

Love the second photo. Reminds me of a scene out of "Fargo."
Old 12-08-2009, 01:02 AM
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number9ine
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I wouldn't worry about it. Unless you see water pooling (maybe it's the pic, but I don't see any) or it gets worse each time, you should keep in mind that the assembly isn't hermetically sealed. There is a vent on each lamp to combat condensation due to the temperature differential. Ice water in a plastic cup will sweat on a hot summer day, same principle.

I'm sure it's no big deal, but check to see if it spreads the next time you're out playing in the snow.
Old 12-08-2009, 03:04 AM
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peavynation
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Originally Posted by number9ine
Ice water in a plastic cup will sweat on a hot summer day, same principle.

Yes, but don't forget that for water to condense on the inside, it takes more than just a temp differential. Somehow humid air got inside the assembly or there'd be no water beading in there, and because it's hermetically sealed, the seals have obviously been breached. I'd take Edgy's advice.

Love the snow picts!
Old 12-08-2009, 07:09 AM
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C4CRNA
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put it in ovem with turkish towell !!
Skip that idea.
Old 12-08-2009, 09:05 AM
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SH || NC
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Originally Posted by Edgy01
Suggest you pull <snip>
Please stop

Originally Posted by C4CRNA
put it in ovem with turkish towell !! Skip that idea.
+1

The headlights are vented from the factory. Join Renntech and take a look at the TSB.
Old 12-08-2009, 11:38 AM
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Trouble is when it dries it can leave spots believe me I have them.
Whitey||C4S please give us a summer of repair or TSB.
Old 12-08-2009, 01:45 PM
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Originally Posted by Mother
Trouble is when it dries it can leave spots believe me I have them. Whitey||C4S please give us a summer of repair or TSB.
One of the TSBs essentially says not to cover the gap at the bottom of the headlights, and not to cover the headlight lens with any film, bra, covering etc. because this is where the ventilation system gets it air to remove the moisture.
Old 12-08-2009, 02:13 PM
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number9ine
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Originally Posted by peavynation
Yes, but don't forget that for water to condense on the inside, it takes more than just a temp differential. Somehow humid air got inside the assembly or there'd be no water beading in there, and because it's hermetically sealed, the seals have obviously been breached. I'd take Edgy's advice.

Love the snow picts!
I'll say it again to reinforce my original post and Whitey's. The assembly is NOT hermetically sealed.

It is vented by design (on the assembly, inside the fender) and will "breathe" a limited amount of air, humid or otherwise.

Regarding Edgy's advice, it doesn't hurt to pull the ***'y and have a look at it to make sure the bulb compartment seals are seated properly. Please DON'T go at it with a hair dryer, heating device or turkish anything.

Mark



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