When Registering ID Codes:

ID code registration is performed while driving at a vehicle speed of approximately 25 mph (40 km/h) or more.
Before performing ID code registration, make sure that no wheels with tire pressure warning valve and transmitters installed are near the vehicle.
Make sure to initialize the tire pressure warning system after registering the ID codes. If the system is initialized before registering the ID codes, the initialized values will be invalid.
Depending on the driving conditions and driving environment, registration may take some time to complete.