2006 Lexus GX 470 Owners Manual - Page 419

STARTING AND DRIVING 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. BRAKE PAD WEAR LIMIT INDICATORS CAUTION When the tires whose ID code is registered at "MAIN" are used, the system does not work properly with the selector switch set at "2nd". If the tires whose ID code is registered at "2nd" are stored nearby, the system will detect their tire pressure (and vice versa). The brake pad wear limit indicators on your disc brakes give a warning noise when the brake pads are worn to the extent that replacement is required. If you hear a squealing or scraping noise while driving, have the brake pads checked and replaced by your Lexus dealer as soon as possible. Expensive rotor damage can result if the pads are not replaced when needed. 394