What are the solutions for scattered light and poor focus in car LED headlights?
2 Answers
The solutions for scattered light and poor focus in car LED headlights are: 1. Reinstall the base of the headlight at the back and secure it properly; 2. If the light is misaligned, adjust the two screw rods behind the lamp bracket—the outer screw rod adjusts left and right, while the inner screw rod adjusts up and down. The maintenance methods for car LED headlights are: 1. Regularly check the sealing of the headlight, and replace the sealing ring between the lens and reflector if it is damaged; 2. Clean the reflector regularly, and replace it if it turns black or the brightness decreases; 3. Regularly remove dust and stains from the bulb. The adjustment standards for headlights are: 1. Drive the car to a flat and open road; 2. Turn on the headlights and adjust the low-beam projection point to about 30 meters from the car, ensuring the two projection points overlap; 3. Adjust the high-beam projection point to be parallel to the ground.
I've been repairing cars for twenty years, and this issue is quite common. The main reasons for LED headlight glare are improper angle adjustment during installation or faulty lenses. First, turn off the lights and let the bulbs cool down, then check if the lens covers are scratched or covered in mud and dust—clean them thoroughly. Next, verify if the bulb is the wrong model; make sure it matches the original vehicle specifications, and replace it with the correct one if necessary. To adjust the beam pattern, use a Phillips wrench to turn the adjustment screws at the back of the headlight, slowly rotating until the beam focuses like a fist on a wall. I recommend testing it at night in an empty area, repeating the process a few times if needed. If the lens is aged or yellowed, just replace it with a new assembly. Don’t overlook voltage issues—sometimes, worn-out wiring can cause flickering or poor beam focus. Use a multimeter to check for stability. In short, study the manual or consult a reliable shop before working on it—safety first.
