Why does the car display a radar system malfunction?

[MaverickDella]

Car displays a radar system malfunction due to poor sensor contact. Here is the relevant introduction about the reversing radar: 1. Working principle: The PDC system works by usually installing radar detectors on the rear or front and rear bumpers of the car to detect obstacles in front or behind, helping the driver "see" the obstacles or the distance from other cars when parking. This device not only facilitates parking but also protects the car body from scratches. 2. Function: When reversing, it helps the driver "see" things that are not visible in the rearview mirror, notifying the driver about surrounding obstacles through sound or more intuitive display. It eliminates the troubles caused by the driver looking around when parking, reversing, or starting the vehicle, and helps the driver overcome blind spots and unclear vision, improving driving safety.