Why is the headlight adjustment screw not responding?
2 Answers
The reasons for the headlight adjustment screw not responding are as follows: 1. The accident positioning may be incorrect, requiring readjustment of the positioning. 2. The original angle of the bulb may be incorrect, making adjustment impossible. In this case, replacing the bulb is sufficient. Introduction to headlight adjustment methods: 1. The height can be adjusted by turning the corresponding adjustment knob on the back of the headlight. 2. The parts to be adjusted and the tools used vary depending on the vehicle model. Generally, common tools include hex wrenches and Torx sockets. 3. Park the car 7.6 meters away from a wall, turn on the headlights, and adjust the light projection position based on the light's position on the wall. If there is a headlight height adjustment knob inside the car, first set it to the "0" position.
I've been driving for decades, and it's quite common for the headlight adjustment screws to get stuck, likely due to rust and seizing, especially on older vehicles. I've encountered this issue several times, mostly caused by accumulated rainwater and dust. Another possibility is that the linkage has come off or broken, which requires removing the headlight for inspection. Avoid forcing it to prevent damaging the threads. Misaligned headlights are extremely dangerous—aiming too high or too low at night can either blind oncoming drivers or reduce your own visibility, increasing the risk of accidents. My advice is to first try spraying some lubricant, wait 10 minutes, then gently turn the screw. If there's still no movement, take it to a professional shop for repair. Regular maintenance, such as keeping the headlights clean, avoiding prolonged sun exposure, and proper rust prevention, can help minimize such issues. It's also crucial to periodically check the headlight alignment to ensure safe driving.
