2009 Lexus GS 450h Owners Manual - Page 517

4-3. Do-it-yourself maintenance n Initializing the tire pressure warning system Initialize the tires with the tire inflation pressure adjusted to the specified level. n If you push the tire pressure warning reset switch accidentally If initialization is performed, adjust the tire inflation pressure to the specified level and initialize the system again. n When the initialization of the tire pressure warning system has failed Initialization can be completed in a few minutes. However, in the following cases, the settings have not been recorded and the system will not operate properly. If repeated attempts to record tire inflation pressure settings are unsuccessful, have the vehicle inspected by your Lexus dealer. l When operating the tire pressure warning reset switch, the tire pressure warn- ing light does not flash 3 times and the setting message does not appear on the multi-information display. l After carrying out the initialization procedure, the tire pressure warning light blinks for 1 minute then stays on after driving for 20 minutes. n Routine tire inflation pressure checks The tire pressure warning system does not replace routine tire inflation pressure checks. Make sure to check tire inflation pressure as part of your routine of daily vehicle checks. 458 GS_HV_U (OM30B44U) March 8, 2010 10:03 am