What are the reasons for the sudden failure of the reversing camera to display?
4 Answers
The reasons for the sudden failure of the reversing camera to display are: 1. Poor line contact: The black screen phenomenon of the reversing camera is most likely due to poor line contact. It is necessary to promptly check the connection between the lines and the vehicle's installation to see if there is any loose connection. If so, it will cause abnormal imaging of the reversing camera, and in this case, simply reconnecting it properly will suffice. 2. Poor photosensitivity: The reversing camera has been used for too long, resulting in poor chip photosensitivity, and even the appearance of many snowflake-like phenomena. It needs to be inspected and repaired at a repair shop or directly replaced.
A few days ago, my reversing camera also went black, which really worried me. Later, I found out it was because the rear trunk camera was covered in mud and rainwater—cleaning it fixed the issue. If the camera itself is fine, then you should check if the wiring is loose, especially since frequent opening and closing of the trunk can pull on the wiring harness. Also, don’t forget to inspect the fuse—my friend’s car once had a blown fuse shared by the reversing camera and reverse lights. A frozen infotainment system could also cause this; try restarting the car. If it’s just rained, pay extra attention, as water short-circuiting the wiring is quite common. If the camera itself is broken, you’ll need to replace it. If you’re handy, you can do it yourself; otherwise, a repair shop can handle it for a few hundred bucks.
When working in a repair shop, reversing camera failures are frequently encountered. First, check if the camera's power supply is normal by using a multimeter to measure whether there is a 12V voltage. Then, inspect whether the video signal line is intact, as it's common for wires to be chewed through by rodents. The reverse trigger wire also needs to be tested; last time, a car had a poor connection in the trigger wire. Issues with the car's infotainment system are not uncommon either—when the software crashes, the reversing camera stops working, and reinstalling the system can fix it. Modified cars are more prone to problems, especially when aftermarket cameras are not properly wired. In humid weather, oxidized connectors can cause a black screen, requiring rust remover to treat the contacts. Older cars often have wiring degradation issues, requiring thorough troubleshooting.
When I first got my driver's license, my reversing camera suddenly stopped working, which made me quite nervous while reversing. First, check if you accidentally pressed the screen's off button—new drivers often do that by mistake. Then see if the camera is blocked by snow or bird droppings; cleaning it might solve the problem. When shifting into reverse, listen for the reversing light—if it doesn’t turn on, there might be an issue with the shared circuit. If the wiring connector is loose, I wouldn’t dare to mess with it and would just drive straight to the 4S shop. Aftermarket infotainment systems sometimes glitch; disconnecting the battery’s negative terminal to reset it usually works best. For safety, it’s smartest to have someone guide you while reversing in such situations—don’t stubbornly try to do it alone.
