I have three 2010 vehicles, a Ford E-250 van and two Priuses. My wife's Prius had a sensor that went dead, and since all my vehicles are the same age, I figured they all would die soon. Bought this tool because it does everything needed to fix my vehicles. I bought 4 new sensors and replaced the old ones. I used the 501 to then update the ECU with the new sensor IDs. The 501 is easy enough to figure out, though updating the ECU took a bit of fumbling around until I got it to work. Cars is fixed and wife is happy.