2005 Lexus LS 430 Owners Manual - Page 412

STARTING AND DRIVING Tire pressure warning system reset switch W266 Initialization is completed after driving at the speeds of 30 km/h (19 mph) or over for more than one hour. If the following driving conditions are satisfied, initialization will be completed in about one hour. 31L568b D The vehicle speeds is between 50 km/h (31 mph) and 100 km/h (62 mph). D The roads are dry, smooth and straight. D The number of passengers is one or two (including the driver). The tire pressure warning system needs to be initialized after tires or wheels are replaced or rotated. To initialize the system, perform the following: 1. Park the vehicle at a safe place with the parking brake applied and turn the ignition switch to "LOCK". 2. Adjust the pressure of all the installed tires to the specified level. (See "Tires and wheels" on pages 464 through 466.) 3. Turn the ignition switch to "ON". If the low tire pressure warning message "Low Tire" appears in the multi−information display, push the reset switch for a few seconds and make sure the warning message goes off. 4. With the vehicle stopped, push and hold the reset switch until "Pressure Initial" appears in the multi−information display. If you make a mistake in the middle of initialization, perform the operation from the beginning again. Do not push the reset switch without adjusting the tire inflation pressure to the specified level. Otherwise, the low tire pressure warning may not turn on even if the tire inflation pressure is low, or it may turn on when the tire inflation pressure is actually normal. If you push the reset switch while driving, initialization is not performed. If "Pressure Initial"does not appear when the reset switch is held down, the system may be malfunctioning. Have your vehicle checked by your Lexus dealer as soon as possible. 373