Hey guys. I’m getting a “check sonar” warning on my NAV screen. It is coming from the front park assist sensors. I’m pretty sure it’s either the middle left or middle right one because the outer two front sensors seem to be working just fine. Obviously I can turn off the parking sensors from the control panel, but then I lose all of them, including the rear ones. Is there a way to disable the problematic sensor?

 

I have the same issue after changing the sensors multiple times I was told by a Lexus tech that the wiring harness for the sonars go bad and it's most likely that one of the wires has deteriorated.

 

Is it possible to check the status of each sensor in Toyota TechStream? Should get you a more definitive answer.