What's the matter with the navigation screen being black but still having sound?
3 Answers
Navigation screen being black but still having sound may be due to a loose power plug of the navigation display; it could also be caused by a damaged touch screen. If the touch screen is functioning normally, then check for issues with the display screen. Inspect the touch circuit to confirm if there are any problems with the wiring. If no issues are found, consider whether the decoding chip or core module is not working or is damaged. Here is more information about car navigation: 1. Car navigation systems have GPS global satellite positioning functionality. Drivers only need to input the destination into the car navigation system. The system will automatically calculate the most suitable route based on electronic maps and remind the driver to follow the calculated route during the vehicle's movement (for example, before turning). The car GPS navigation system consists of two parts: one part is composed of the GPS receiver and display device installed in the car; the other part is the computer control center, with the two parts connected via positioning satellites. 2. Most car navigation systems use a visual display system as the human-machine interface. Some provide voice systems, allowing people to directly converse with the navigation system and receive voice reminders on when to turn or exit the highway. Some can also provide the car owner with a map of the traveled route for the return trip. Some car navigation systems can display in different languages and can inform the driver of local speed limits, road conditions, and the car's average speed, estimating the time of arrival at the destination for the driver.
The navigation screen is black but there is audio output, which could indicate a hardware-level issue. The backlight of the screen may be broken or there might be loose internal circuit connections, causing the display to fail while the audio module continues to function normally. Start with simple checks: see if the navigation-related fuse in the fuse box has blown, or if the screen connection cable is loose—especially prone to disconnection on bumpy roads. For safety, avoid fiddling with it while driving; find a safe place to park and try restarting the navigation unit. During regular maintenance, have a technician check the sealing of the multimedia system interfaces to prevent moisture from damaging the wiring. Unresolved screen issues can affect driving safety; relying solely on audio navigation when you can't see the route increases the risk of distraction. It's more reliable to visit a professional repair shop early and use a diagnostic tool to read the fault codes.
My car had the same issue before - the screen went completely black but the navigation voice prompts were still audible. It's mostly caused by software freezing or misconfigured settings, like system crashes causing display lag. Try manually rebooting the entire infotainment system by long-pressing the power button - this often works. Check your screen brightness settings to ensure it wasn't accidentally turned down to zero. Also try clearing cached files, as accumulated cache can slow down response speed. When temporarily relying on voice navigation, prioritize safety - keep your eyes on the road to avoid distractions. System bugs frequently occur during telematics updates, so always maintain the latest software version to prevent compatibility issues. If DIY solutions fail, don't hesitate to visit the dealership for a technician to reflash the software.
