What Causes Stripes on the Car Display Screen?
3 Answers
The reasons for stripes appearing on the car display screen are: moisture in the wiring harness of the screen assembly, aging of internal wiring harnesses in the screen assembly, loose connections of the screen wiring harness, or malfunction of the infotainment module causing abnormal display. Solutions: If the wiring harness of the screen assembly is damp, leading to abnormal display, remove the screen assembly and dry the damp parts. If internal wiring harnesses, such as signal cables, are aged, replace the aged wiring harnesses. If the screen wiring harness connections are loose—inevitable due to road bumps during driving—secure all wiring harness connections. If the infotainment module malfunctions and fails to display properly, try restarting the module or restoring factory settings.
Last time I encountered sudden horizontal and vertical streaks appearing on my car's screen, which really gave me a fright. I took it to the 4S shop for inspection, and the technician said it was due to a loose display cable—those cables are quite fragile and can easily lose contact with just a bit of bumping. Another possibility is moisture getting into the back cover of the screen, which is common during the rainy season in the south. The trickiest situation is when the screen panel itself is damaged, requiring a replacement that can cost over a thousand. I suggest first trying to restart the car's infotainment system to see if it recovers; if not, you'll need to check the wiring. When parking, avoid placing your phone mount near the screen, as signal interference can also cause flickering. If you can't fix it yourself, take it for repairs immediately—after all, this thing is crucial for the safety of your reversing camera, so handle it with care.
The screen of my old car was flickering with stripes recently, which was really dizzying. After a check-up, it turned out to be poor contact caused by aging wiring—the outer insulation of the wires was damaged, causing interference and resulting in distorted images. This issue is particularly common in areas with large temperature differences, as extreme cold or heat can easily trigger it. Besides wiring, be cautious with modifications—for example, improperly wiring a dashcam can mess up the screen signal. In my case, simply tightening the screen connector fixed the problem, but the mechanic said severe cases might require replacing the wiring harness. For daily use, it’s best to avoid prolonged exposure of the screen to direct sunlight, as high temperatures can seriously damage LCD screens.
