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post #3 of (permalink) Old 4th February 2013
Technical Supremo

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Re: condensation

Once moisture gets into the headlight it may evaporate when the lights are siwtched on - the heat of the bulb warms it up. The problem then arises that once it cools down the evaporated water then condenses and then the whole cycle begins again.

If you have the time and patience removing the bulb from the back and blasting it with a warm hairdryer may help chase some the the moisture out hopefully reducing the effect of dampness.

Strangely enough neither my 1994 Clio or 2001 Honda Civic have never suffered such problems.

Some headlights have a vent at the back - usually at the bottom on the back of the reflector housing so it is worth checking if there is such and if so is it clear.
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