What's the reason for the reversing camera screen going black with only auxiliary lines displayed?

[BennettRose]

Reversing camera screen going black with only auxiliary lines displayed may be due to aging of the video power cable. Precautions when reversing are as follows: 1. Front of the car: When reversing, the area swept by the front of the car is much larger than the area occupied by the body. Therefore, while paying attention to the rear, do not neglect observing the left and right ends of the front of the car, especially pedestrians passing in front of the car at this time. 2. Areas close to the sides of the car: Areas very close to both sides of the car are not visible, and when turning the steering wheel, the trajectory of the front wheels is an arc, with a difference from the rear wheels. Therefore, scraping may occur when reversing. 3. Area below the rear windshield: Without auxiliary equipment, this area is completely invisible when reversing; on the contrary, even with a reversing radar, it cannot guarantee completely accurate judgment when encountering some low obstacles. 4. The rear right side of the car body: This is the area farthest from the driver and the most difficult to observe, as it is often blocked by the C-pillar. Being at the rear of the vehicle, any slight carelessness can lead to a collision.

[McAubrey]

I often encounter this issue where the reversing camera screen goes black but the guidelines are still visible. This is likely due to a power supply or signal transmission problem with the camera itself, while the navigation host is still functioning, hence the guidelines remain displayed. Common causes include loose or worn wiring at the trunk's camera, dirt obstructing the lens signal, or poor plug contact due to vehicle vibration. It's recommended to open the trunk yourself to check if the camera wiring is secure, clean the lens surface, and inspect the fuse box for any signs of blown fuses. If the problem persists, a professional diagnostic tool scan for error codes at a specialized shop is necessary, as ignoring this issue increases the risk of reversing accidents, potentially leading to minor scrapes. Maintaining the reversing system along with other auxiliary devices can save hassle in the long run.

[Parra]

I've experienced the situation where the reversing camera screen goes black, leaving only the guiding lines, which is quite annoying. The main reason is the interruption of the video input signal, but as long as the host's graphic processing function is normal, the guiding lines can still be displayed. It could be due to a faulty camera or a short/open circuit in its wiring, especially since frequent opening and closing of the trunk can loosen the connectors. Last time, I checked the wiring connection from the camera to the central console, and simply re-plugging the connector fixed the issue, saving money and time. In daily use, avoid leaving the car dirty for too long as it can affect the camera lens. Regular checks can prevent major repairs. Don't delay on safety issues; resolve them as soon as possible to avoid accidents.

[ODonovan]

I've dealt with this type of malfunction several times. When reversing, the screen goes black only showing auxiliary lines. The core issue lies in the absence of video signal while the navigation system remains intact. Simply put, it could be a camera malfunction or connector problem, such as aging wiring causing poor contact. Quickly check for any physical damage at the camera end and the condition of the fuses. If that doesn't work, seek professional help to avoid the risk of blind spots during reversing due to delay. Paying attention to these details during daily driving is crucial.

[DePaul]

In my opinion, such issues with the reversing camera are quite common. A black screen with auxiliary lines indicates that the main unit is functioning properly but the video source is interrupted. It could be due to the camera lens being covered by mud or internal circuit damage, and loose wiring connections are also common occurrences. My own preventive method is to regularly wipe the lens to keep it clean and check the trunk wiring harness to avoid crushing. When a fault is detected, start with simple checks like restarting the system or testing the connectors, which saves time and is efficient. Regular comprehensive maintenance of auxiliary systems like parking sensors can reduce future troubles.

[AnnaDella]

When encountering a black screen with only parking guidelines flashing in the reverse camera, start troubleshooting from the basics. The cause is usually video transmission failure while auxiliary graphics remain operational, possibly due to interrupted camera power supply or broken signal lines, especially at the trunk hinge area which is prone to wear. The first steps are to clean any lens contamination ensuring no obstruction, then check if fuses and connectors are secure. Last time my friend's car had this issue and returned to normal after a simple reset. Regular maintenance of automotive electronic equipment can prevent frequent occurrences of similar problems.