2006 Lexus SC 430 Owners Manual - Page 221

4-3. Do-it-yourself maintenance Setting the tire pressure warning system To activate the tire pressure warning system, it is necessary to register the ID code of the sender on the selector switch. Once registered, change the setting position each time you replace the tires and wheels. Re-registration is no required. n Registering the ID code ID codes should be registered by Lexus dealer. 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 tire pressure sensors registered at "2nd" by Lexus dealer. n Selecting the position 1 2 Main position 2nd position The selector switch is located on the right side in the glove box. 4 Maintenance and care n When to replace your vehicle's tires If either of the following occurs, the tire should be replaced: l Tire damage such as cuts, splits, cracks deep enough to expose the fabric, or bulges indicating internal damage l If a tire often goes flat or cannot be properly repaired due to the size or location of a cut or other damage If you are not sure, see your Lexus dealer. 211