Why does the reversing camera screen always flicker when reversing?

[LaErin]

Generally, it's an issue with the reversing camera, which can be resolved at a 4S shop. Below is relevant information about reversing cameras: 1. Introduction to reversing cameras: A reversing camera, also known as a parking assist system, reverse visual system, or vehicle monitoring system (English name: vehicle-backup-camera), is widely used in various large, medium, and small vehicles for reversing or driving safety assistance. 2. Advantages of reversing cameras: Installation is simple. Typically, a standard single-output reversing camera only requires connecting the positive power wire to the positive terminal of the car's reversing light power and the negative power wire to the negative terminal of the reversing light or to ground (GND). Wiring can be easily understood by studying the vehicle model, and the camera can be installed by drilling a hole in an easily accessible location.

[DiEthan]

I just encountered the same issue. My car's screen also kept flickering when reversing. I initially thought the camera was broken, but it turned out to be caused by moldy and loose wiring connections. Check the wiring harness for the rearview camera in the trunk yourself—give it a gentle shake, and if the flickering worsens, it's likely a poor connection. This could be due to moisture intrusion during the rainy season or significant voltage fluctuations, especially when the car battery is old and unstable. I recommend first cleaning any dirt off the camera lens and securing the connection wires. If it still flickers, don't force it—take it to a professional auto repair shop to replace the connectors or upgrade the system. It won't cost much but will ensure safe reversing. Such problems are quite common, especially in older cars or after frequent long trips. Regular maintenance of the wiring to prevent dust buildup can effectively avoid these issues.

[OGavin]

Having repaired cars for many years, I've found that flickering backup cameras are mostly caused by signal interference or wiring issues. The most common problems are wear and tear or short circuits in the signal cable connecting the rear camera to the main unit, especially when the car jolts and the contacts become loose. Insufficient battery voltage can also cause screen flickering—battery health is crucial. I've encountered similar symptoms caused by charging system failures. If you're handy, you can try unplugging and reconnecting the wiring harness and use a multimeter to check the voltage (don't be intimidated by the terminology—it's not hard to do). Otherwise, it's more efficient to have a technician diagnose the issue. Some cars just need a software update to fix the bug, so don't rush to replace parts. For prevention, avoid severe vibrations and regularly inspect the wire sleeves and protective covers to extend the equipment's lifespan.

[SanTimothy]

Screen flickering during reversing is extremely dangerous, causing momentary blurring that makes it hard to see pedestrians or obstacles. I personally experienced this and nearly hit a wall. You must stop using it immediately and switch to relying on rearview mirrors for safer reversing. Common causes include internal component failure in the camera, screen damage, or environmental light interference, especially in strong lighting or at night. It's recommended to visit a 4S shop for a comprehensive inspection of the camera module. Spending some money now ensures safety later. Small issues can easily escalate into major problems, so don't delay addressing them. Develop the habit of testing the reversing camera before driving to detect problems early.