What's the reason for the car screen not lighting up?
3 Answers
The main reasons for the car screen not lighting up are as follows: 1. Poor line contact. It is necessary to check whether there is a loose connection in the line in time. 2. The power signal line is aging. You can try to replace it with a new one. 3. The screen has been used for too long, causing the power supply module to malfunction. Not only will there be lag, but in severe cases, a black screen will appear. Extended content: The car display screen not only provides information such as navigation, reversing images, and vehicle fuel consumption for viewing, but also has many multimedia entertainment systems for operation. It can be said that it provides convenience for the people in the car while also improving the visual experience inside the car. However, if the car display screen fails, the inconvenience it will bring to the driver will be obvious. Therefore, if there is a problem, it should be checked and repaired in time.
Once my car screen suddenly went black while I was listening to music, which really startled me. It was probably a blown fuse—those things tend to overheat and fail easily. Another possibility is a loose wire connection that got disconnected due to vibration. Or the screen itself might be damaged from prolonged high-temperature aging. I’d suggest first trying to reboot the system by holding the power button for 10 seconds to see if it responds. If that doesn’t work, check the fuse box, usually located under the steering wheel, and replace any blown fuses with new ones. But don’t tamper with the wiring randomly—if you can’t fix it, taking it to a 4S shop for inspection is safer. After all, the screen is connected to navigation and rearview cameras, and driving without it is quite troublesome. Get it repaired early to avoid more potential issues.
A non-functional screen is a common issue, especially for someone like me who deals with car electronics frequently. In many cases, it's caused by software freezes or update conflicts that lead to system crashes and automatic shutdowns. You can try rebooting or flashing the firmware by connecting to a computer via the USB port or an OBD scanner. Another possible cause is voltage instability, such as insufficient power supply from an aging battery or short circuits due to worn-out wiring triggering the screen to turn off. It's best to check the current with a multimeter, but avoid DIY repairs—leave it to professional technicians for proper diagnosis. Electronics are delicate; high temperatures can easily cause malfunctions, so regular maintenance helps minimize such issues.
