Why is there no video signal in the car reversing camera?
2 Answers
The reasons for no video signal in the car reversing camera are as follows: Prolonged use of the reversing camera: Due to prolonged use of the reversing camera, the chip's light-sensing effect deteriorates, not only causing a lot of snowflake-like interference but also leading to the no-signal phenomenon mentioned today. Of course, it could also be due to defects in the car's circuit design. However, such chip abnormalities and design defects are rare. Poor contact: Focus on checking the connectors and plugs, as these adapters are prone to poor contact. Or the video cable might be broken. Due to weather conditions like temperature changes or humidity, the video plug may corrode or have a loose connection, which could cause this problem. Many luxury cars also experience this phenomenon in winter. The wiring harness of the reversing camera runs from the dashboard all the way to the trunk, which is relatively long. Any poor contact in the wiring harness or plug can cause malfunction.
I noticed the rearview camera image disappeared while reversing, showing only a black screen, which is really frustrating. This has happened several times before, usually because the camera lens was covered by mud or snow, blocking the view. Additionally, the wiring connectors at the rear might have come loose, especially after rain when water gets into the plugs and causes rust, leading to signal interruption. Once, it was simply a blown fuse—I just pulled it out and replaced it with a new one to fix the issue. When troubleshooting, first try restarting the car's system or disconnecting the battery for a few minutes to reset the camera module. The camera's position makes it prone to collision damage, so be careful to avoid scraping objects while reversing. Regularly cleaning the lens with a damp cloth and checking the wiring connections can help prevent problems. Safety comes first—when the camera fails, I rely more on the rearview mirrors and reverse slowly without rushing. If the issue persists, it's best to visit a mechanic promptly to avoid small faults turning into major repairs.
