What are the reasons for the reverse radar not alarming during reversing?
2 Answers
The reasons for the reverse radar not alarming during reversing are: 1. Lack of power supply to the reverse radar controller; 2. Loose connection of the reverse radar probe plug; 3. Damage to the buzzer or loose connection of the plug; 4. Damage to the reverse radar wiring; 5. Loose connection between the buzzer or display and the main unit; 6. Display malfunction. The working principle of the reverse radar is: Under the control of the controller, the sensor emits ultrasonic signals. When encountering an obstacle, an echo signal is generated. After the sensor receives the echo signal, the controller processes the data to determine the position of the obstacle. The distance is displayed on the display, and a warning signal is issued to achieve the purpose of safe parking.
The reverse radar not alarming is an issue I've encountered several times. The most common cause is the sensors being blocked by dirt, especially those small probes at the rear of the car—they become less sensitive when covered with sand or mud. Another possible reason is loose or corroded wiring connections, which are prone to issues when exposed to rainwater. A blown fuse could also be the culprit, requiring you to open the fuse box and check if the corresponding fuse is intact. Faults in the control unit or software, such as system crashes or incorrect settings, might also be to blame. For routine maintenance, I use a damp cloth to clean the sensors every two weeks, which works well for prevention. If cleaning doesn’t solve the problem, checking the wiring or replacing the fuse usually does the trick with simple steps.
