As far as remembering the sensor when changing tires...on the rear, we did, no problems. Changing the front tire a couple of days later, we forgot...ripped the sensor right off. $138 plus tax! Are they insane! Needless to say, I'll do without for awhile.
The good news is, the readout shows only dashes and doesn't effect any other readouts on the display. And of course I can scroll it off the display. I'll probably replace it when I change tires again.