2013 Cadillac XTS Premium. I regularly change tires at a national tire dealer. Every time you change tires, they forget to reset the TPMS to the correct tire. When I remind them and watch them, it takes them a while to get it right. With this tool it took me less than 1 minute to get all 4 tires in the right position. What you need to know is how to set TPMS location for your specific vehicle. For example, I need to scroll the information screen to the tire pressure screen by holding enter. The horn sounds and the turn signal lights up showing the tire I need to mount. As soon as a tire is mounted, a beep sounds as a success message and another indicator lights up next to the next tire to be mounted. Instructions for using the tool are on the back of the tool. Don't forget a fresh 9V battery.