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YARIS iA_OM_OM99Q46z_(U)
219
3-12. Tire Pressure Monitoring System
3
When Driving
Because this system detects slight changes in tire conditions, the timing
of the warning may be faster or slower in the following cases:
● The size, manufacturer, or the type of tires is different from the specifica-
tion.
● The size, manufacturer, or the type of a tire is different from the others,
or the level of tire wear is excessively different between them.
● A run-flat tire, studless tire, snow tire, or tire chains are used.
● An emergency tire is used (The tire pressure monitoring system warning
light may flash and then continue illuminating).
● A tire is repaired using the emergency flat tire repair kit.
● The tire pressure is excessively higher than the specified pressure, or
the tire pressure is suddenly lowered for some reason such as a tire
burst during driving.
● The vehicle speed is lower than about 9.3 mph (15 km/h) (including
when the vehicle is stopped), or the drive period is shorter than 5 min-
utes.
● The vehicle is driven on an extremely rough road or a slippery, icy road.
● Hard steering and rapid acceleration/deceleration are repeated such as
during aggressive driving on a winding road.
● Load on the vehicle is applied to a tire such as by loading heavy luggage
to one side of the vehicle.
● System initialization has not been implemented with the specified tire
pressure.
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