What Causes the Reversing Radar to Display Without Sound?
2 Answers
Most cases where the reversing radar displays without sound are due to damage to the reversing radar. Below are detailed explanations: 1. Reversing radar not sounding: First, check whether the power cable of the main unit is properly connected and if there is current; then inspect whether the main unit cable of the radar has become loose. If neither of these is the issue, the problem may lie with the radar itself. 2. Regarding the reversing radar: The first possibility to consider is damage to the buzzer, in which case a new buzzer needs to be purchased and installed; additionally, check if the vehicle has undergone any recent modifications. If modifications were made, it's possible that the reversing radar's wiring was damaged during the process, requiring the vehicle to be taken to the original service shop or a 4S store for inspection. 3. Check whether the wiring connections at the bumper are intact: Check if the reversing lights turn on when the reverse gear is engaged. If they don't, inspect whether the connection switch of the reversing lights is damaged.
I encountered a similar issue when I first started driving. The reverse radar screen displayed normally but there was no sound, which was quite dangerous. It might be because the buzzer is broken or has poor contact. Aging, broken, or short-circuited wiring can easily prevent signal transmission. Another possibility is accidentally setting the volume to the lowest level in the settings, like when you mistakenly operate the in-car menu. Additionally, insufficient battery power or generator issues can affect the power supply to the sound module. My advice is not to wait until something serious happens—get the wiring and speakers checked as soon as possible, especially after rain when the humid environment increases the risk of short circuits. Regular maintenance can prevent these issues. Anyway, repairs won’t cost much, and safety is more important than anything else.
