What Are the Reasons for a Successfully Paired Car Radar but No Sound?

1 Answers
LaKylie
07/25/25 8:34am
The reasons for a car radar having no sound include obstacles being too low, obstacles being too thin, the reverse radar switch being turned off, reverse radar wiring failure, and reverse radar damage, totaling five possible scenarios. Obstacles being too low: When obstacles are too low, the reverse radar may fail to detect their presence. Obstacles being too thin: When encountering slender poles, the reverse radar may also fail to detect the obstacles. Reverse radar switch turned off: There is usually a control switch for the reverse radar on the central control panel inside the car. If it is turned off, the reverse radar will not function. Reverse radar wiring failure: When the reverse radar wiring ages or breaks, the reverse radar will not work properly. Reverse radar damage: Components such as the reverse radar, controller, or alarm may be damaged. Solutions: First, check whether the power cable of the main unit is properly connected and if there is current; then inspect whether the radar main unit wiring is loose. If neither of these is the issue, the problem may lie with the radar itself. The first possibility is that the buzzer is broken, in which case you need to purchase and install a new buzzer. The second consideration is whether the car has undergone any recent modifications. If so, the reverse radar wiring may have been damaged during the modification process, requiring the car to be taken to the original repair shop or a 4S store for inspection and repair.
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