2007 Toyota Sienna Owners Manual - Page 220

07 SIENNA_U (L/O 0612) To initialize the system, perform the following: 1. Park the vehicle in a safe place and turn the ignition key to the "ACC" or "LOCK" position. 2. Adjust the pressure of all the installed tires to the specified cold tire inflation pressure level. (See "Tires" on page 517 in Section 8.) 3. Turn the ignition key to the "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 ignition key "ON", and then turn the ignition key to the "ACC" or "LOCK" position. If you push the tire pressure reset switch while vehicle is moving, initialization is not performed. If you push the tire pressure reset switch accidentally and initialization is performed, adjust the tire inflation pressure to the specified level and initialize the system again. CAUTION Do not push the reset switch without adjusting the tire inflation pressure to the specified level. Otherwise, the tire pressure warning light may not come on even if the tire inflation pressure is low, or it may come on when the tire inflation pressure is actually normal. If the tire pressure warning light does not blink slowly three times when you push and hold the reset switch, initialization has failed and the tire pressure warning system may not work properly. In this case, initialize the system again. If initialization cannot be performed, have the system checked at your Toyota dealer. If turned ignition key to the "ACC" or "LOCK" position before the initialization is finished, the tire pressure warning light may blink 3 times the next time the ignition key is turned to the "ON" position. 220 2007 SIENNA from Oct. '06 Prod. (OM45437U)