What causes the no-signal display in the reversing camera?
2 Answers
The no-signal display in the reversing camera may have four causes. Below are the specific explanations for the reversing camera: Reasons for no-signal: The operation of the reversing camera may be interfered with when the car is just started; The probe of the reversing camera is damaged or the photosensitive signal of the chip is blocked due to prolonged use; Poor contact in the circuit, you can check the connection between the reversing radar circuit and the vehicle's wiring; If the reversing camera on the car is part of a navigation and reversing camera integrated system, the failure of the reversing camera function may be due to damage to the navigation card slot. Introduction and functions of the reversing camera: The reversing camera, also known as the parking assist system, or reversing visual system, or vehicle monitoring system, etc. The system is widely used in various large, medium, and small vehicles for reversing or driving safety assistance.
Recently, my car's reversing camera keeps showing 'no-signal', which is really annoying. The most likely cause is poor contact in the camera wiring, especially where the wiring passes through the trunk area—it tends to loosen easily. I had this issue once after a car wash, and upon inspection, I found the connectors had oxidized and turned green. If you've recently installed a dash cam or something similar, you should also check if the wiring was incorrectly connected. Additionally, water ingress causing a short circuit in the camera itself can trigger this warning, especially in older cars with deteriorated seals. By the way, listen for any buzzing sound from the camera when you shift into reverse gear. If there's no sound, it might be a power supply issue—check the fuse for the reverse lights. If you can't figure it out, it's best to consult a professional mechanic, as circuit testing requires specialized tools.
