What is the reason why the reversing radar keeps ringing?

Actually, the radar misjudged. There are probably some "obstacles" around, but this "obstacle" is visible and the scope should be greatly reduced. We can get off and check whether there is dirt on the probe of the reversing radar, such as heavy dust and garbage that is not easy to clean. These are the reasons for the probe misjudgment. As long as the dirt around the probe is cleaned up and put back into the car, the reversing radar will return to normal working condition.

Another situation is more common in the north, because the temperature in the north is low, especially in winter, dripping water becomes ice, and the water placed outside will freeze instantly. If the probe is covered with water, it will condense into ice when driving outside, and it will be regarded as an obstacle by the probe, and the reversing radar will alarm wildly. So at this time, heat the probe by hand, melt the ice, or wipe it with a hot towel.

In addition to the inexplicable "obstacles" around the probe, if the probe is damaged by external forces, it will "falsely report" the road conditions; Or the probe enters the water and burns the route, which will also cause the problem of reversing radar ringing. Therefore, if you notice that the probe has the above two unexpected situations, replacing the probe is the best policy.