Reverse Sensing System troubleshooting

[yeet1331]

I currently know for a fact that one of my RSS sensors are bad. I have not pulled the bumper for details yet, as I don’t know how to tell if a sensor is bad. Any tips on how to tell if a sensor is bad?

 

[Number4]

Start the vehicle. Have someone you trust put it in reverse with the brakes on.
Put your ear next to each sensor. The one that isn’t clicking, is bad.

 

[yeet1331]

Start the vehicle. Have someone you trust put it in reverse with the brakes on.
Put your ear next to each sensor. The one that isn’t clicking, is bad.

Thank you so much. 2 outer sensors have no click, I just set the parking brake and put it in reverse without actually starting the engine. Life saver right here.