2002 Lexus SC 430 Owners Manual - Page 236

KEYS AND DOORS Replacing tires and wheels As you might have difficulty in locating a flat or deflated tire, an air pressure warning system should be installed on the tires of this vehicle. When replacing the wheels, be sure to install air pressure sensors on the wheels. There are 3 ways to set up the air pressure sensors: a. Remove the sensor from the old wheel and install it to the new wheel. b. Keep the same wheel with air pressure sensor and replace the tire alone. c. Use a new wheel and sensor. You have to register an ID code for a new sensor. Up to 2 sets of codes can be registered. As one ID for the originally installed sensor is registered at "MAIN" of the selector switch, use the "2nd" position to register an ID for the new sensor. You do not need to re-register the ID code for any other replacements. For the use of the originally installed tires, put the selector switch at "MAIN" and for the use of tires set purchased later, put the switch at "2nd". For the sensor selector switch, see page 224. 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. 223 SC430 through December 2001 Production