Why is the reversing radar not making any sound?
2 Answers
Reasons why the reversing radar does not beep: 1. Normal reasons: (1) Obstacle is too low: When the obstacle is too low, the reversing radar may fail to detect its presence. (2) Obstacle is too thin: When encountering slender poles, the reversing radar may also fail to detect the obstacle. (3) Reversing radar switch is turned off: There is usually a switch on the central control panel inside the car that controls the reversing radar. If it is turned off, the reversing radar will not work. Solution: Turn on the reversing radar switch. 2. Fault or damage reasons: (1) Reversing radar circuit failure: When the reversing radar circuit ages or breaks, the reversing radar will not function properly. Solution: Check if the reversing radar circuit is normal. (2) Reversing radar is damaged: After ruling out the above issues, it is highly likely that components such as the reversing radar, controller, or alarm are damaged. Solution: Replace the damaged components.
I've been driving for over a decade and have also encountered the issue of no sound from the car's reversing radar. After some thought, I believe the problem could be in a few areas: the sensor probes might be completely covered by mud or dust, blocking the signal and thus no sound; the wiring connections could be loose or aged and broken, preventing current flow; a blown fuse is quite common, especially the radar fuse which tends to burn out; or there could be a control unit malfunction or the speaker itself might be faulty. I recommend first trying to carefully clean the probes when washing the car, then check the owner's manual for the fuse location and replace the fuse. Regularly inspect the wiring connections to ensure they're not loose—no sound when reversing is quite dangerous, so it's safer to frequently check the rearview mirror. If all else fails, it's best to go to a repair shop for diagnosis to prevent a small issue from turning into a big one and delaying your driving.
