2004 Lexus LS 430 User Guide 2 - Page 380

STARTING AND DRIVING 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. 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). 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. Tire pressure system warning message w265 If there is a problem electrically in the tire pressure warning system, the master warning light comes on, the above message appears and a warning tone sounds. At this time the multi-information display indicates which part causes an error. Although it is no problem to continue driving with the above message on the display, have your vehicle checked by your Lexus dealer as soon as possible. 362