2007 Lexus RX 350 Owners Manual - Page 326

4-3. Do-it-yourself maintenance n How to initialize the tire pressure warning system STEP 1 Park the vehicle in safe place and turn off the engine. STEP 2 Adjust the tire inflation pressure to the specified pressure (→P. 396) STEP 3 Turn the ignition key to the ON position. Make sure to adjust the tire inflation pressure to the specified level. The tire pressure warning system will operate based on this pressure level. STEP 4 Recording tire inflation pressure settings Press the tire pressure warning reset switch until the tire pressure warning light flashes 3 times. The initial setting will complete within a few minutes. Keep the ignition key in the ON position until initialization is complete. Registering and selecting tire pressure sensor ID codes The tire pressure sensor is equipped with a unique ID code. When you change to another tire set that has tire pressure sensors registered to the vehicle, use the select switch to allow the vehicle to recognize them. n Registering ID codes Two separate sets of ID codes can be registered for each vehicle. This allows 2 separate sets of settings to be conveniently recorded for all season and winter tires. MAIN: The MAIN ID code is used for the factory installed tire pressure sensors. 2nd: The 2nd ID code is used for tire pressure sensors associated with a secondary set of tires. Make sure to have all tire pressure warning system ID codes registered by your Lexus dealer. ID codes must be reset when tires or wheels are replaced. 306