What Causes the Reversing Screen to Go Black?
3 Answers
There are two scenarios for a black reversing screen: 1. Completely black screen and no power-on: Check if the car's original fuse has blown. If the fuse is blown, replace it. Check if the navigation buttons are stuck, including the RSET button, as stuck buttons can also prevent the device from powering on. Additionally, if you're skilled, you can remove the navigation unit and check if the tail fuse of the navigation system has blown. If it has, replace it. If the screen remains black and doesn't power on, use a multimeter to measure whether the B+ and ACC voltages are normal (12V). If the voltage is normal, then the issue lies within the device and requires internal repair. 2. Black screen but sound is normal: Switch to a familiar interface and tap the touchscreen to see if it responds. If the touch function works normally, focus on the display screen. Check if the LCD screen is damaged, whether the LCD backlight driver is functioning, if the signal circuit is normal, if the display decoding is working, and if the core module is operational. If the touch function is abnormal, first suspect a damaged touchscreen and replace it if necessary. Then inspect the touch circuit to confirm there are no issues with the wiring. Generally, the problem could be that the decoding chip or core module is not working or is damaged.
Last time my car's reversing screen went black, it took me a while to figure it out. There could be several reasons: the power fuse is blown—check the one for the reversing camera in the fuse box and replace it if needed; the camera lens is dirty or has water blocking the view, just clean it and it should work; or the wiring is loose, with the connector in the trunk aging or getting wet, try tightening the connection. Another time, the system software froze, and the screen went black when shifting into reverse—restarting the car fixed it. This issue affects reversing safety, especially in parking lots or at night when visibility is poor, making it easy to bump into things. I didn’t handle it in time and ended up with a small scratch. It’s a good idea to clean the lens during regular car washes and check the wiring periodically to avoid trouble. If you can’t fix it yourself, don’t push it—go to a professional shop right away. Spending a little money is worth it.
Having been involved in car modification for years, the causes of a reversing screen blackout require multi-angle analysis. The most common issues include: power supply problems such as blown fuses or insufficient battery power; equipment failures like damaged camera lenses, malfunctioning CCD components, or aging displays; connection issues such as loose wiring plugs or corroded connectors leading to signal interruption; and software bugs like navigation system crashes mistakenly triggering black screens. When troubleshooting, start with the simplest steps: test the voltage at the fuse box, clean the lens contacts, and reconnect the camera plug. If these don't work, you may need tools to test circuit continuity. As a reminder, reversing assistance systems rely on these components, so avoid risky reversing during blackouts—rely on rearview mirrors or step out to check for safety.