Condensation in head lamp

Discussion in 'Auto-Trail' started by Angus dog, Jun 9, 2013.

  1. Angus dog

    Angus dog Read Only Funster

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    Just back from first trip with Cheyenne 696.Fabulous weather.However I noticed a fair bit of condensation in one headlamp.Should I be concerned ?what are the likely causes ?Thanks in anticipation
     
  2. 2dogs

    2dogs Read Only Funster

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    Angus,

    I would check the rubber grommets? that cover the holes for inserting the bulbs, I had a car where the grommet kept slipping off letting moisture in.

    you can take the bulb out and hair dry the inside through the hole or put a silicon sachet you get in new shoe boxes inside then seal for a few hours for it to work.

    I have had condensation cause rusting on the bulbs but no long term damage.

    Cheers
    2dogs
     
  3. duane0001

    duane0001 Funster

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    Is it a new shape Ducato (250)
    they suffer from this and there is really nothing that can be done, having the lights on drys them out but it always returns
     
  4. rainbow chasers

    rainbow chasers Read Only Funster

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    As already stated, it will be the rubber seal on the back of the headlight often people change a bulb and find it difficult to put back on - so they do their best or leave it off. Other cause my be the seal between the lense and glass. Rarer, but possible.

    To 'Cure' it, check the rear sealing cover, if unattached - that would be the cause. Remove cover/bulb and pop a hair dryer in the lense to dry it out. Allow to cool, and then refit the bulb/sealing grommet and that will be done.
     
  5. Ed Excel

    Ed Excel Funster

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    Modern headlight units are not sealed, as such, they should have ventilation holes to allow any water to evaporate.

    One reason for water ingress is a blocked scuttle drain causing water to cascade over the back of the light unit. Also, if you regularly park on uneven ground, with the scuttle outlet pipe at the high side water will flood the drain without the outlet being blocked.

    First make sure the unit vent is not blocked then find the water source.
     
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  6. duane0001

    duane0001 Funster

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    A man that knows what he is on about:thumb:
    This is the reason it can not be "cured" as stated in a previous post
    The heat from the bulb will evaporate it
     
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