What are the reasons for the headlights staying on all the time?

[SilasLee]

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 surface of the lamp cover has problems such as yellowing, cracking, blurring, scratches, etc., you can first use a cleaner to remove oil stains, sweat stains, wax and other impurities on the surface of the headlight and around it, trying to clean as large an area as possible without missing any details or dirt. During the cleaning process, use a clean dust-free 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.