Lexus RX 450h 2012 Owner's Manual page 538

Initializing the tire pressure warning system
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Initialize the tire pressure warning system with the tire inflation pressure adjusted to
the specified level.
If you push the tire pressure warning reset switch accidentally
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If initialization is performed, adjust the tire inflation pressure to the specified level
and initialize the tire pressure warning system again.
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.
When operating the tire pressure warning reset button, the tire pressure warn-
●
ing light does not blink 3 times.
After carrying out the initialization procedure, the tire pressure warning light
●
blinks for 1 minute then stays on after driving for 20 minutes.
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.
4-3. Do-it-yourself maintenance
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