Why are the headlights always on?
2 Answers
It may be because the always-on mode is selected, just turn off this mode. Here are the maintenance precautions for headlights: 1. Remove dirt: If the car's lamp cover and lamp are intact, but the lamp cover surface has problems such as yellowing, cracking, blurring, scratches, etc., you can first use a cleaning agent to remove oil stains, sweat stains, wax and other impurities on the surface and around the headlight, trying to wipe as large an area as possible without missing any details or dirt. During the wiping process, use a clean dust cloth for secondary cleaning, which has the effect of removing oil, wax and preventing static electricity. 2. Prevent yellowing: Since soapy water is an alkaline substance but does not cause corrosion, it can solve the problem of headlight yellowing. Soapy water only plays a cleaning role. To make the headlights brighter, polishing wax is also needed.
After driving for so many years, I've encountered the issue of headlights staying on a few times. The most memorable instance was when my old car sat overnight, and the next morning I found the battery completely drained. A later inspection revealed that the headlight switch was stuck in the 'on' position, likely due to wear and tear of the aging button. Replacing the switch solved the problem. Sometimes, it's not necessarily the switch—it could be a stuck relay. A relay is like a small electromagnetic switch; if the internal contacts are burnt or pitted, the lights won't turn off. Alternatively, there might be a short circuit in the wiring, such as loose connections or exposed wires causing a continuous current flow. In such cases, it's best to first check the relevant fuse in the fuse box. If it hasn't blown, try turning the switch on and off a few times after shutting off the car to see if it responds. If that doesn't work, head to a repair shop immediately to check the wiring, or else the battery will die quickly, making it hard to even start the engine. Additionally, vehicles with modified headlights are more prone to such issues, so it's advisable to routinely inspect the switch components during regular maintenance to prevent problems before they occur.
