What are the standards for adjusting car headlights?
2 Answers
Car headlight adjustment standards are: 1. Drive the car to a flat and open road surface; 2. Turn on the car headlights and adjust the low beam projection point to about 30 meters from the car, making the two projection points coincide; 3. Adjust the high beam projection point to be parallel to the ground. Car headlights, also known as car front headlights or car LED daytime running lights, can be maintained by: 1. Regularly checking the sealing of the headlights, and replacing the damaged sealing ring between the lens and reflector in time; 2. Regularly cleaning the reflector, and replacing it when it turns black and the light intensity decreases; 3. Regularly cleaning dust and stains on the bulb.
I've been repairing cars for over a decade, and the standard for headlight adjustment is mainly to ensure the lights don't dazzle while still illuminating far. The standard is: park the car on level ground, turn on the headlights facing a wall about 5 meters away, the brightest cutoff point of the beam should be about 5 cm below the center height of the headlight. Refer to the vehicle manual or national standards for specifics, generally a vertical downward tilt of 0.5 to 1 degree is sufficient. Use the adjustment screws at the back of the headlight when adjusting, turning clockwise lowers the beam, counterclockwise raises it. Remember, there's a big difference between a fully loaded and an empty car, don't underestimate this, otherwise at night you'll blind oncoming drivers, making it hard for them to see the road and increasing the risk of accidents. I've adjusted countless cars myself, usually done within 10 minutes. The key step is to first park the car facing the wall, measure the position accurately, and don't move it.
