Why is the reversing radar not alarming?

[EleanorFitz]

If the radar in the car suddenly stops beeping or alarming and malfunctions, there may be three reasons: whether the radar host wire is loose; the buzzer is damaged; or the wiring at the bumper is damaged. The specific solutions are as follows: 1. If the reversing radar is found not to beep: check whether the power cord of the host is properly connected and whether there is current; whether the radar host wire is loose. If neither of these is the problem, then the issue may lie with the radar itself, and it needs to be repaired at a 4S shop. 2. If the problem is confirmed to be with the reversing radar: the first possibility to consider is that the buzzer is damaged. In this case, you need to purchase a new buzzer and install it. During the reversing process, if the obstacle is too far away, the radar may not sense it, resulting in no response. You can try getting closer. If the radar responds at a closer distance, then it is not a malfunction.