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  1. #1
    Learner Driver DeshiUK's Avatar
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    Question Water in headlight unit

    Forum Key Rings
    Hello all!

    A few months ago I noticed water building up inside my one of my headline units. I can't see any physical cracks on the lens and haven't changed any bulbs recently. I have checked the three covers where you replace the bulbs and they are all closed.

    Has anyone else had this before? Or know what to do? It seems to be more at the top of the unit, though I'm not sure if it's just the water trying to evaporate.

    The car is a 2013 pre-facelift.

    https://imgur.com/2MjgGbV

    Thanks and Happy New Year!

  2. #2
    Drift King


    exclusiv.'s Avatar
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    try some silica gel pouches in headlight,after drying it out
    ​2015 Sri vx line nav Biturbo . Sri heated leather.5500k AFL . Vx line 20s,8inch LCD dash .FLEXride.Reverse cam.Irmscher grill.235hp and 480 torqs.30mm lowering springs.20mm H&R spacers all round. Mtec drilled discs on rear,VXR 355mm drilled on front,with Brembo 4 pot calipers. Auto wipers .VX puddle lights.Gloss black roof wrap.

  3. #3
    Street Racer chili's Avatar
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    strangely enough i am having the same issue with my drivers side unit water in the top, i have changed bulbs recently in both however its only the drivers one that has large drops of water built up. Hair dryer would work, i live in a 2nd floor apartment so my problem is electric, so i am trying the silca gel for now. i put my main beam on at work the other day for 10 minutes while just tappin the outer case of the light to move the water beads down and the heat from that started to dry the light out.

    Your picture is a carbon copy of my light and water issue

  4. #4
    New Driver ilunn's Avatar
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    Had it on couple Mercs one at 3 days old and it seems to be an issue with modern lights, I think its due to much less heat being generated as when they had halogen the heat would dry any damp air instantly.
    Best removing one of the covers on back while it drys out allowing moisture to evaporate but make sure you put it back before it rains or car gets washed.

  5. #5
    New Driver Roman14's Avatar
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    Happy New Year.

    Have a look at the picture, you'll see the arrow, the corner of the bumper is attached to the head lamp.
    Remove the screw and have a look at the top of the head lamp where the top of the bumper was attached.
    If you have a crack there, that's where the water gets in to the head lamp. If there is no crack , then the problem is somewhere ells.
    But that's where I found a crack on my head lamp.

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    Street Racer chili's Avatar
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    Quote Originally Posted by Roman14 View Post


    Happy New Year.

    Have a look at the picture, you'll see the arrow, the corner of the bumper is attached to the head lamp.
    Remove the screw and have a look at the top of the head lamp where the top of the bumper was attached.
    If you have a crack there, that's where the water gets in to the head lamp. If there is no crack , then the problem is somewhere ells.
    But that's where I found a crack on my head lamp.
    cool i will look into that on mine

  8. #7
    Learner Driver andy66's Avatar
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    Check indicator bulb holder and bulb cover below it.I've got this problem I used some Vaseline to seal it for now see how it goes

  9. #8
    Learner Driver Sparkey's Avatar
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    Take the headlight out and take all bulbs out of the unit.
    Get a hair dryer or better a heat gun and carefully heat the unit up, blowing hot air into the bulb holes and across the face of the unit.
    Be very careful moving the heat gun/hair dryer all the time so as not to melt the plastic.
    Eventually (and this could take a while depending on the amount of condensation in the unit) the unit will dry out.
    Then allow the unit to fully cool.
    Buy or have a look through your old shoe boxes for silica gel sachets, drop a few of these into the unit, obviously don't drop it into the space where the bulb goes, there is usally other spaces between the clear front and the back that these can be dropped in to.
    https://www.ebay.co.uk/itm/Silica-Ge...frcectupt=true
    And that's it, the silica will absorb any moisture that is in the lamp unit.
    I've fixed God knows how many units like this, including the rear lamp on my current Insignia.

 

 

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