Welcome to the neighborhood. Sometimes the RAB will go off if it senses an irregularity in the pavement. I have a mixture of dirt/grass and concrete wheel rows for my driveway and it sometimes senses the dirt irregularities. The pavement at the 711 may have had a small heave at one location that you were backing up over. If you go slow enough it will not break itself.So I just got my brand new 2020 subaru Ascent. I have had it for about 2 months no issues till now. So I just backed out from an empty parking lot no cars around at 711 and my RAB sensor went off beeped yellow on the screen and breaked it self. It did that three times and even at a stop light with no cars around. Why did it just start to do this it has never done it no accident nothing just decided to start breaking it self in reverse. Anybody experience this before? Might have to take it in to the dealer because its weird. I understand a steep driveway will cause this but I haven't been to any all regular places I have reversed at in the past. BTW new here hello.!! Lol
the stop light scenario is stumping me since it is unlikely the pavement was irregular. It might be that the sensors were not properly angled or maybe it got pushed in too far during the install. It operates on sonar. Call the dealer to discuss it.
rab video tutorial