What are the reasons for a reversing radar having display but no sound?

[AniyahRose]

If a reversing radar has display but no sound, it may be due to damage to the reversing radar. Here are the specific details: Reversing radar not sounding: First, check whether the power cord of the main unit is properly connected and whether there is current; then check if the main unit wire of the radar is loose. If neither of these is the issue, the problem may lie with the radar itself. Regarding the reversing radar: The first possibility to consider is a damaged buzzer, in which case you need to purchase and install a new buzzer; also, check if the car has undergone any recent modifications. If so, the wiring of the reversing radar may have been damaged during the modification process, and the car should be taken to the original repair shop or a 4S shop for inspection. Bumper wiring issue: Check if the wiring connection at the bumper is intact; check whether the reversing light turns on when the reverse gear is engaged. If not, inspect whether the connection switch of the reversing light is damaged.