Lexus IS250 2006 Owner's Manual page 303

When the initialization of the tire inflation 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 satellite switch, the warning light does not flash and the set-
●
ting message does not appear on the multi-information display. (The tires can-
not be initialized while the vehicle is moving.)
After driving for approximately 20 minutes since the initialization has been
●
completed, the warning light flashes.
Routine tire inflation pressure checks
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The tire inflation 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.
4-3. Do-it-yourself maintenance
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