2010 Toyota Prius Owners Manual - Page 467
2010 Toyota Prius Manual
Page 467 highlights
4-3. Do-it-yourself maintenance Registering ID codes The tire pressure warning valve and transmitter is equipped with a unique ID code. When replacing a tire pressure warning valve and transmitter, it is necessary to register the ID code of tire pressure warning valve and transmitter. Have the ID code registered by your Toyota dealer.