What to Do When Fog Lights Get Water Inside?
3 Answers
The solutions for fog lights getting water inside are: 1. If the fog light has slight water ingress, you can turn on the lights for a while, using the heat generated when they are turned on to allow the internal moisture to escape through the vent pipe; 2. In case of severe water ingress, it is necessary to promptly remove the lamp cover, drain the water, and let it dry. It is important to check whether there are any cracks or leaks in the headlight, and if so, they need to be addressed as well. Fog lights usually refer to automotive fog lights, which are installed at the front and rear of the vehicle to illuminate the road and provide safety warnings during rainy or foggy weather, improving visibility for the driver and other traffic participants.
That early morning when I washed the car, I noticed water droplets accumulated inside the left fog light cover. This situation really shouldn’t be taken lightly. The most cost-effective method is to pry open the dust cover behind the light cover and use a hair dryer to blow air at the waterlogged area for about ten minutes, being careful not to set the temperature too high to avoid warping the plastic. If the water accumulation is in a tricky spot, simply unplug the bulb connector and let the fog light rest for a couple of days, leaving the cover open to dry under direct sunlight. However, if you notice any cracks in the light housing, the most effective solution is to buy a bottle of clear silicone sealant on Taobao and apply a thin layer along the crack. Old Zhang, the mechanic, mentioned that in their workshop, they usually use a heat gun to dry it out and then reseal it with adhesive, emphasizing the importance of ensuring proper waterproofing at the seams.
Don't panic when you find moisture inside fog lights after driving in the rain. I secretly learned a trick at an auto detailing shop last time. First remove the fog light assembly, unscrew the rear waterproof plug, use a syringe to inject some alcohol and spray it on the inner surface of the lens, then swirl it around - alcohol has excellent water absorption. After finishing, remember to seal the edges of the waterproof plug thoroughly with hot melt glue. This treatment kept my lights fog-free for three months. If the lamp body is severely cracked, you can find specialized headlight restoration kits online - sanding, spraying, and UV curing the whole set costs just 80 yuan. I helped my neighbor with this job recently, and now his car's fog lights don't show rainbow rings during car washes anymore.
