2005 Lexus RX 330 Owners Manual - Page 495

STARTING AND DRIVING Tire pressure warning system reset switch 4. With the vehicle stopped, push the reset switch on the left lower instrument panel and hold it until the low tire pressure warning light blinks three times. Initialization is completed after driving at the speeds of 30 km/h (19 mph) or over for about a few hours total, when the tire pressure warning system detects the normal tire pressure. If the following driving conditions are satisfied, initialization will be completed in about one hour. D Vehicle speed varies between 30 km/h (19 mph) and 80 km/h (50 mph) D Normal road surface When the warning light blinks twice every second while driving, you may be unable to reset the system. In this case, set the system again according to the above procedure. Do not push the reset switch without adjusting the tire inflation pressure to the specified level. Otherwise, the low tire pressure warning light may not come on even if the tire pressure is low, or it may come on when the tire inflation pressure is actually normal. If you push the reset switch while the vehicle is moving, initialization is not performed. If the low tire pressure warning light does not blink when you push and hold the reset switch, have the low pressure warning system checked at your Lexus dealer. The tire pressure warning system need to be initialized in the following conditions: D When the low tire pressure warning light blinks twice every second D After replacing or rotating tires or wheels When initializing the system, the present tire condition is stored as a standard. To initialize the system, perform the following: 1. Park the vehicle at a safe place and apply the parking brake. Stop the engine. 2. Adjust the pressure of all the installed tires to the specified level. (See "Tires and wheels" on page 566.) 3. Turn the ignition key to "ON". 464