How to repair if the reversing radar dot falls in?
2 Answers
If the sensing point of the reversing radar falls in, it is necessary to remove the bumper for repair. The reversing radar consists of the following 3 components: 1. Ultrasonic sensor: Its main function is to send and receive ultrasonic signals, and then input the signals into the host, which are displayed through the display device; 2. Controller: It processes the signals and calculates the distance and orientation between the vehicle body and the obstacle; 3. Display or buzzer: When the sensor detects that the distance between the car and the obstacle reaches a dangerous distance, the system will issue an alarm through the display and buzzer to remind the driver and ensure driving safety.
A while ago, my car also had the issue of the small dot from the reversing radar falling inside the car, which was really annoying and could potentially affect the radar's functionality. That small dot is actually a contact component on the sensor, possibly falling into the car's inner layers due to aging adhesive strips or loose installation. I handled it myself by first turning off the car's power to ensure safety, then carefully using a small magnet or a fine hook tool to probe into the radar's installation hole and gently fish it out. If it didn't work the first time, I tried again patiently—patience is key. After retrieving it, I checked if the adhesive was weak and replaced it with new strong glue for a secure fix, or simply bought a new sensor to replace it, saving both money and time. Usually, taking a quick glance at the radar's position before driving and cleaning off dust can prevent similar issues. The car is a treasure; fewer troubles mean more safety.
