Put my truck in reverse today and the back up sensor started sounding steadily like it does when you are about to hit something. There was nothing behind me. I can't get it to stop. It happens every time i put it in reverse. I tried cleaning the sensors in the rear bumper but it did not help. Any suggestions before I go to the dealer.
Mine does the same thing. I've been back to the dealer twice. The first time they reset the sonar system and it worked correctly for a day, but it started malfunctioning again within 24 hrs. Last time they replaced a sensor. Once again, it worked for 24 hrs and then started beeping when nothing is behind me.