2008 Toyota Sienna Owners Manual - Page 261

08 SIENNA_U (L/O 0801) REPLACING TIRES AND WHEELS When replacing the tires and wheels, be sure to install tire pressure warning valves and transmitters. ID codes on the tire pressure warning valves and transmitters are registered in the tire pressure warning computer. When replacing a tire pressure warning valve and transmitter, it is necessary to register the ID code of tire pressure warning valve and transmitter. Have the ID code registered by your Toyota dealer. If the ID code is not registered, the system will not work properly. After driving for about 20 minutes, the tire pressure warning light comes on after blinking for 1 minute to indicate a system malfunction. TIRE PRESSURE SWITCH WARNING RESET To initialize the system, perform the following: 1. Park the vehicle in a safe place and turn the engine switch off. 2. Adjust the pressure of all the installed tires to the specified cold tire inflation pressure level. (See "Tires" on page 553 in Section 8.) 3. Turn the engine switch is in "ON" position. 4. Push and hold the tire pressure warning reset switch until the tire pressure warning light blinks slowly three times. 5. Wait for several minutes with the engine switch "ON", and then turn the engine switch to the "ACC" or "LOCK" position. If you push the tire pressure warning reset switch while the vehicle is moving, initialization is not performed. If you push the tire pressure warning reset switch accidentally and initialization is performed, adjust the tire inflation pressure to the specified level and initialize the system again. NOTICE When the tires or tire pressure warning valves and transmitters must be replaced, have them replaced by your Toyota dealer. The tire pressure warning valves and transmitters will be affected by the installation or removal of tires. When initializing the system, the present tire inflation pressure is stored as standard. The tire pressure warning system determines decreased air pressure by comparing the present and the standard tire inflation pressures. When you change the set tire inflation pressure, it is necessary to initialize the tire pressure warning system. When changing the tire size. 220 2008 SIENNA from Aug. '08 Prod. (OM45455U)