I have 2011 Prius Pck II. Racked up about 22k miles now is socal. Replacedone tire due to flat. From week 3, Ive had blinking tire pressure warnin.. then it stays lit then goes away. Dealer said they will reset and say the sensors are just sensitive. Well.. 22k miles of annoying problems continues to blink then stays lit, then goes away. ] I think it is defected.. they dont want to admit it and replace for me.