Lexus LS460 User Manual page 766

The initialization operation
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Make sure to carry out initialization after adjusting the tire inflation pressure.
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Also, make sure the tires are cold before carrying out initialization or tire inflation
pressure adjustment.
If you have accidentally turned the engine switch off during initialization, it is not
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necessary to press the reset switch again as initialization will restart automatically
when the engine switch has been turned to IGNITION ON mode for the next time.
If you accidentally press the reset switch when initialization is not necessary, adjust
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the tire inflation pressure to the specified level when the tires are cold, and conduct
initialization again.
When initialization of the tire pressure warning system has failed
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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.
When operating the tire pressure warning reset switch, the tire pressure warning
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light does not blink 3 times.
After carrying out the initialization procedure, the tire pressure warning light blinks
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for 1 minute then stays on after driving for 20 minutes.
LS460/LS460L_U (OM50D48U)
6-3. Do-it-yourself maintenance
765
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