Lexus GS 450h 2008 Owner's Manual page 439

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How to initialize the tire pressure warning system
Park the vehicle in safe place and turn the "POWER" switch to
STEP 1
OFF.
While the vehicle is moving, initialization is not performed.
Adjust the tire inflation pressure to the specified cold tire inflation
STEP 2
pressure level. (→P. 551)
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.
Turn the "POWER" switch to ON mode.
STEP 3
STEP 4
Wait for a few minutes with the ON mode, and then turn
STEP 5
"POWER" switch to the OFF.
4-3. Do-it-yourself maintenance
Push and hold the tire pressure
warning reset switch until the tire
pressure warning light blinks
slowly three times and the mes-
sage "PRESSURE
appears on the multi-information
display.
INITIAL"
4
437