How to Deal with Horizontal Stripes on Car Navigation Screen?
3 Answers
There are several reasons why horizontal stripes appear on a car navigation screen, including moisture in the screen assembly wiring, aging of internal wiring harnesses in the screen assembly, loose wiring harness connectors, or malfunction of the head unit module preventing normal display. Below are the solutions: Moisture in the screen assembly wiring causing abnormal display. Solution: Remove the screen assembly and dry the damp parts. Aging of internal wiring harnesses in the screen assembly: For example, signal wires can be replaced if they are aged. Loose wiring harness connectors: While driving, wiring harnesses may loosen due to road bumps. In this case, all wiring harness connectors should be secured. Malfunction of the head unit module preventing normal display: In this situation, try restarting the module or restoring factory settings. Internal motherboard failure: Replace the motherboard or the entire screen assembly. In addition to vertical stripes, the central control screen may also experience flickering, black screen, or freezing. The troubleshooting methods for these issues are similar. If you lack strong hands-on skills or are unfamiliar with the vehicle structure, it is recommended to visit a professional repair shop or 4S store for inspection and repair.
When my navigation screen shows horizontal stripes, I start troubleshooting step by step: first try restarting the system, just like when a phone freezes, which can fix minor software glitches. If that doesn't work, check the video cable connections, as they might be loose or dusty. Gently cleaning the plug interfaces with a cotton swab can often restore the connection. If the stripes persist, it could indicate screen aging or circuit failure, and I recommend visiting an authorized repair shop for inspection as soon as possible—don't push your luck. To extend the screen's lifespan, I usually avoid prolonged exposure to high temperatures and severe jolts. In such situations, using a mobile phone for navigation temporarily is a safer alternative. Updating the system software is also a preventive measure, as older versions often have compatibility issues that can cause errors. I've performed these updates myself a few times, but for more complex problems, it's better to leave them to the experts for peace of mind.
Having driven for many years, the issue of horizontal stripes on the navigation screen is truly annoying. Whenever it appears, I pull over and restart the device. If restarting doesn't work, I check the screen settings and for any loose connections, gently wiggling the cables sometimes helps. If the problem persists, I worry about hardware damage, such as internal module issues or interference from external devices, and then I take it to the 4S shop for a technician's diagnosis. Regular system updates and keeping the wiring clean help reduce risks, and I use a mobile app as a temporary solution during trips. Preventive maintenance is crucial; during servicing, I ask the technician to test voltage stability to avoid recurring issues that could affect the driving experience.
