How to Adjust Car Lights That Are Not Focusing?

[MacOscar]

When car lights are not focusing, you can adjust the light position by turning the corresponding adjustment knobs behind the headlights. Before adjusting, shine the lights onto a wall and observe whether the lights are misaligned, too high, or too low.

[StDakota]

I always adjust my car lights by myself, especially when the light is not focused, which can be quite troublesome. The most common issue is incorrect beam angle. You can check the light pattern by parking on a flat surface facing a wall at night. Most car lights have adjustment screws at the back: the vertical screw on top adjusts the height, and the horizontal screw on the side adjusts the direction. Use a regular screwdriver to turn them slowly and observe how the light converges. Remember to clean the lens and light cover first, as accumulated dust can scatter the light. Check if the bulb is old or loosely installed, especially halogen bulbs, which can easily burn out the filament and cause divergence. For LED lights, ensure the base is securely plugged in and the angle is precise. DIY at home is quite convenient, but if you're unsure, it's best to seek professional repair. Scattered light reduces nighttime visibility and may blind oncoming vehicles, so safety comes first—don't delay.