Why is there no sound from the Highlander's reversing radar?

[LaAllie]

If you find that the reversing radar is not working, first check whether the power cord of the main unit is properly connected and if there is any current. Then, check if the radar main unit wire has become loose. If both are fine, the issue might lie with the radar itself. Here are some scenarios where the radar might be malfunctioning: 1. Check if the buzzer is damaged. In this case, you will need to purchase and install a new buzzer. 2. Check if your vehicle has undergone any recent modifications. If modifications have been made, it's possible that the reversing radar's wiring was damaged during the process. When the reversing radar is not working, first check if the wiring connection at the bumper is intact. Then, check if the reversing light turns on when the reverse gear is engaged. If it doesn't, check if the reversing light's connection switch is damaged. Next, check if the computer displays any fault codes. If none of these issues are present, then check if the reversing radar itself is malfunctioning.