What's the reason when the car's low beam doesn't work but the high beam does?
2 Answers
The reasons why the low beam doesn't work but the high beam does are as follows: 1. Blown fuse: The low beam fuse may be blown. You need to open the car's fuse box and check if the low beam fuse is intact. If it's blown, simply replace it with a new one. 2. Broken filament: It could be a broken filament. In most cars, the high and low beam bulbs are separate. If the high beam works but one low beam doesn't, it might be due to a broken low beam filament, and replacing the bulb should fix it. If both low beams don't work and the filaments are intact, the issue might be with the switch or relay, requiring step-by-step troubleshooting.
I find this situation quite common, it might just be that the low beam bulb has burned out. Car bulbs have two filaments inside - if the high beam works, it means the high beam filament is still functioning normally, but the low beam filament may have broken. If you've never changed a bulb before, you can try opening the hood to inspect it yourself. The headlight assembly usually has a rear cover panel that can be unscrewed to check the bulb. If the bulb is fine, it could be poor switch contact or a wiring short circuit - you'll need to test whether the light switch operates smoothly. Sometimes fuses blow and affect the low beam circuit - just locate and replace the corresponding fuse in the fuse box. Remember safety first - don't work in poor lighting conditions, it's best to have a friend assist to ensure proper operation. Regular maintenance of lighting components helps prevent these minor issues - keeping your vehicle in top condition is as simple as checking the tires.
