I have an OBD2 scanner and a couple apps that I use. There is lots of good useful data, but I am not sure about parking sensors. Mine gives data such as battery temp, drive unit temp, voltage of each module and battery string. It also gives data like total kWh used from new, total charging kWh since new, input from sensors like steering angle, and ride height. Mine doesn’t have parking sensors (2013 model S) so can’t test that. The OBD2 was cheap and easy to hook up. I’d recommend it.