2009 Lexus SC 430 Owners Manual - Page 288
2009 Lexus SC 430 Manual
Page 288 highlights
5-2. Steps to take in an emergency n If the tire pressure warning system is inoperative The tire pressure warning system will be disabled in the following conditions: (When the condition becomes normal, the system will work properly.) l If tires not equipped with tire pressure warning valve & transmitters are used. l If the ID code on the tire pressure warning valve & transmitters is not registered in the tire pressure waning computer. l If the tire pressure warning select switch is set to a different tire setting. l If the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm2 or bar) or higher. The tire pressure warning system may be disabled in the following conditions: (When the condition becomes normal, the system will work properly.) l If electronic devices or facilities using similar radio wave frequencies are nearby. l If a radio set at similar frequencies is in use in the vehicle. l If there is a lot of snow or ice on the vehicle, in particular around the wheels or wheel housings. l If non-genuine Lexus wheels are used. (Even if you use Lexus wheels, the tire pressure warning system may not work properly with some types of tires.) l If tire chains are used. n If the tire pressure warning light comes on after blinking for 1 minute frequently If the tire pressure warning light comes on after blinking for 1 minute frequently when the engine switch is turned to "ON" position, have it checked by your Lexus dealer. 5 When trouble arises 293