How to Repair Water Leakage in Car Headlights?
2 Answers
Minor water leakage in car headlights does not require repair, but severe cases may necessitate replacing the headlight rear cover seal. Below is a partial introduction on repairing water leakage in car headlights: 1. Slight water ingress: For relatively minor cases of water inside the headlight, there is no need to worry excessively. After the headlights have been on for a while, the fog will dissipate through the vent tube along with the heat, which generally does not damage the headlight or electrical circuits. 2. Severe water ingress: In cases of severe water ingress, the headlight cover should be removed to inspect the headlight surface for any damage or potential leakage points. If abnormalities are found, it is recommended to replace the headlight rear cover seal and vent tube.
I had my SUV headlights leak several times before, and found this issue to be quite common, mainly due to aging seals or cracks in the lens. When repairing, don’t panic—safety first. Park the car, turn off the engine, and disconnect the power to avoid short circuits. To dry out the leaked water, wait for the sun to naturally dry it or use a hairdryer on low heat—avoid high temperatures to prevent damaging the bulb. Check if the seal is cracked or displaced. If it’s still intact, you can DIY by buying a tube of automotive-grade silicone sealant, carefully applying it along the seams to fill gaps, and waiting a few hours for it to cure before testing the seal. If the lens is cracked, you’ll need a new replacement part—an OEM lens can be found online for around a hundred bucks, and you can replace it yourself. Regular inspections and maintenance can save big money. Prolonged leakage dims the lights and affects driving, so address it promptly. Delaying could lead to worse electrical issues.
