2007 Lexus SC 430 Owners Manual - Page 234

4-3. Do-it-yourself maintenance Installing tire pressure warning valve & transmitters When replacing tires or wheels, tire pressure warning valve & transmitters must also be installed. When new tire pressure warning valve & transmitters are installed, new tire pressure warning valve & transmitter ID codes must be registered in the tire pressure warning ECU and tire pressure warning system must be initialized. Have tire pressure warning valve & transmitter ID codes registered by your Lexus dealer. (→P. 219, 220) Initializing the tire pressure warning system n The tire pressure warning system must be initialized in the following circumstances: l When changing the tire inflation pressure by changing traveling speed or load weight, etc. When the tire pressure warning system is initialized, the current tire inflation pressure is set as the pressure benchmark. n How to initialize the tire pressure warning system STEP 1 Park the vehicle in safe place and turn off the engine. STEP 2 Adjust the tire inflation pressure to the specified cold tire inflation pressure level. (→P. 227) Make sure to adjust the tire pressure to the specified cold tire inflation pressure level. The tire pressure warning system will operate based on this pressure level. STEP 3 Turn the ignition switch to "ON" position. 4 Maintenance and care 219