2007 Lexus GS 450h Owners Manual - Page 401

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 the power switch to "OFF" mode. While the vehicle is moving, initialization is not performed. STEP 2 Adjust the tire inflation pressure to the specified cold tire inflation pressure level. (→P. 493) Make sure to adjust the tire pressure to the specified cold tire inflation pressure level. The tire pressure warning system will operate based on this pressure level. STEP 3 STEP 4 Turn the power switch to "IG-ON" mode. Push and hold the tire pressure warning reset switch until the tire pressure warning light blinks slowly three times and the message "PRESSURE INITIAL" appears on the multi-information display. 4 Maintenance and care STEP 5 Wait for a few minutes with the "IG-ON" mode, and then turn power switch to the "OFF" mode. 385