What are the self-repair methods for a car display screen showing white screen?
3 Answers
For hardware issues, the only solution is to take it to a 4S shop or a repair shop for servicing. For software issues, check whether the software has been upgraded or if the white screen is caused by the version. Of course, it could also be due to aging power signal cables, which you can try replacing. If the black screen issue is resolved, it indicates that the power signal cables were indeed the problem.
Last time I was driving, the display suddenly went white, which really freaked me out, so I thought about fixing it myself. My first instinct was to turn off the engine and wait a few minutes before restarting—often, if the system freezes, a reboot will fix it. Then, I got out of the car, opened the hood, and checked the connection cables behind the display for any looseness or oxidation on the plugs. I gently wiped them with a clean cloth and plugged them back in tightly. I also had to check the fuses—locating the one labeled for the screen in the fuse box—and if it was blown, I replaced it with one of the same rating. If that didn’t work, I tried disconnecting the negative battery terminal for a few minutes and reconnecting it, which acts like a system reset and can resolve software issues. For regular maintenance, cleaning dust and avoiding prolonged exposure to sunlight can help prevent this issue. If the screen still stays white, then it’s time to visit a repair shop. DIY fixes can save some money, but don’t force anything and risk damaging the parts.
When my car's display screen goes blank, as someone who enjoys tinkering, I first try a simple reboot: start the car and hold down the power button or volume knob for ten seconds to see if the screen recovers. If that doesn’t work, check all visible connections, especially the main and branch wire interfaces, ensuring they are secure—lightly wiggle the connectors to test contact. Next, locate the fuse box, typically in the trunk or under the hood, and check if the fuse corresponding to the display is intact; replace it if blown. For prevention, wipe the screen weekly to prevent dust buildup, which can affect heat dissipation. Additionally, voltage instability is common—use a multimeter to check if the power supply voltage is within the normal 12-volt range. Remember, safety first: turn off the engine to prevent electric shock during operations. If all else fails, don’t hesitate to take it to a professional for repair.
