Get Ready for Winter, Check Your Headlight to Prevent Water or Moisture in it.
It is almost November, weather’s getting cold. There is a great temperature range in day.
In such weather, you are possible to see that your car headlight is getting foggy buildup inside on the morning. This is a common occurrence. As you drive with your lights on, the bulbs continue to heat up. Once you stop, the cooler, moister air outside can trickle into the housings of the headlamp. The housings, on most cars, are vented at the top and bottom to allow for pressure differences that keep your bulbs and lamps from cracking and failing. When the lens of the headlight is cooler than the air inside the housing, droplets of moisture will condense inside, leaving your headlight being foggy. When the outside temperature rises at daytime, the moisture usually evaporates. Don’t need to worry about it.
If your headlamp is always having visible condensation inside it, that would be an annoying and frustrating situation. This indicates that your headlight housing is not improperly sealed well, possibly because of rubber aging or cracks. When water and moisture get inside the headlight, the headlight light beam and brightness will be affected.
How to fix it?
When this situation happens, don’t turn on your headlight anymore. Go to a car repair store and ask them to examine your headlight. They will take down the headlight housing, check carefully for visible cracks or holes around the edges of the headlight and the headlight cover. If there are no visible cracks or holes, the problem could be the housing vents rubber tube.
If you notice improperly fitting rubber seals you should go ahead and replace them, dry the headlight by airing, and then reseal it.
If there are cracks on headlight lampshade, generally car repair store will suggest you replace a new headlight housing because they don’t have and also hard to find the matched headlight lampshade to your car.
Note: If there is visible condensation inside the headlight, don’t bake the headlight directly with a dryer. Currently, most of headlight lampshades on the market are made with plastic. The baking temperature is too high and easy to make headlight lampshade aging to be yellow or even cracked when headlamp cools off.