What Causes No Signal in Car Reversing Camera?
2 Answers
Reasons for no signal in car reversing camera are as follows: 1. When the car is just started, it may interfere with the operation of the reversing camera. You can try restarting to see if the situation improves. It could also be electromagnetic interference from other electrical devices in the car. Try turning off the radio or music player before restarting. 2. The probe of the reversing camera may be damaged or the photosensitive signal of the chip may be blocked due to prolonged use. You can remove the camera and connect it to someone else's navigation system to test if the camera is faulty. 3. Poor line contact can cause the reversing radar to work intermittently. We can check the connection between the reversing radar lines and the vehicle's installation wiring to see if there is any loose connection. 4. If the reversing camera on the car is part of a navigation and reversing camera integrated system, it may be that the navigation card slot is damaged, causing the reversing camera function to fail.
It's really annoying that my car's reversing camera has no signal. I encountered this issue before, probably because the camera lens was covered with dirt. When reversing, dust or mud gets on the lens, and the signal cuts off. You should also check if the camera wiring is loose or short-circuited. Many car owners install it afterward, and if the connection isn't tight, the signal can be intermittent. A common issue is also the head unit—if the software system suddenly crashes, it may show no signal, just like a phone freezing. If the fuse is blown, the entire system will fail, so check the corresponding part in the fuse box. If nothing works, try restarting the car or resetting it to factory settings. You can do these checks yourself, like wiping the lens or jiggling the connector. If the problem persists, take it to a repair shop immediately—don’t compromise driving safety, as a reversing accident could be serious. Always keep the lens clean while driving to prevent this issue.
