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What are the self-repair methods for a car display screen showing white screen?

2 Answers

MacSavannah

07/25/25 12:10pm

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.

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Guy

08/11/25 8:14pm

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.

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