2003 Lexus SC 430 User Guide - Page 242

STARTING AND DRIVING CAUTION D Have the tires, wheels or sensors replaced and ID codes registered by Lexus dealer. If you need sensors, purchase from Lexus dealer. D The use of non-genuine wheels will cause the air pressure sensors to transmit the electronic code in different manner, resulting in the failure of the system. Selector switch 31sa21a " 1 Main position 2 2nd position The selector switch is located on the right side in the glove box. The ID code is given in the sender built in the air pressure sensor. To activate the air pressure warning system, it is necessary to register the ID code of the sender on the selector switch in the vehicle. 2 sets of ID codes can be registered. The code of the tires originally installed on the vehicle is registered on the switch at "MAIN". Have a new tires set with new air pressure sensors registered at "2nd" by Lexus dealer. ID codes should be registered by Lexus dealer. Once registered, change the setting position each time you purchase tires and wheels. Re-registration is not required. When purchasing new tires, consult your Lexus dealer. 224