Toyota Tacoma 2012 Owner's Manual page 454

4-3. Do-it-yourself maintenance
Wait for a few minutes with the engine switch in the ON posi-
tion, and then turn the engine switch to the ACC or LOCK
position.
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.
454
Press and hold the tire pressure
warning reset switch until the tire
pressure warning light blinks
slowly 3 times.