If The Tire Pressure Warning System Is Inoperative - Toyota 2011 Sienna Owner's Manual

If the tire pressure warning system is inoperative

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The tire pressure warning system will be disabled in the following condi-
tions:
(When the condition becomes normal, the system will work properly.)
If tires not equipped with tire pressure warning valves and transmit-
●
ters are used.
If the ID code on the tire pressure warning valves and transmitters is
●
not registered in the tire pressure warning computer.
The tire pressure warning system may be disabled in the following condi-
tions:
(When the condition becomes normal, the system will work properly.)
If electronic devices or facilities using similar radio wave frequencies
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are nearby.
If a radio set at similar frequencies is in use in the vehicle.
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If there is a lot of snow or ice on the vehicle, in particular around the
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wheels or wheel housings.
If non-genuine Toyota wheels are used. (Even if you use Toyota
●
wheels, the tire pressure warning system may not work properly with
some types of tires.)
If tire chains are used.
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5-2. Steps to take in an emergency
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