When The Tire Pressure Warning Light Comes On - Toyota Avensis Owner's Manual

 When the tire pressure warning light comes on (vehicles with the tire
pressure warning system)
Inspect the appearance of the tire to check that the tire is not punctured.
If the tire is punctured: P. 654, 668, 682
If the tire is not punctured:
Carry out the following procedure after the tire temperature has lowered
sufficiently.
Check the tire inflation pressure and adjust to the appropriate level.

If the warning light does not go out even after several minutes, check that

the tire inflation pressure is at the specified level and carry out initializa-
tion. (P. 549)
The warning light may come on again if the above operations are con-
ducted without first allowing the tire temperature to lower sufficiently.
 The tire pressure warning light may come on due to natural causes
(vehicles with the tire pressure warning system)
The tire pressure warning light may come on due to natural causes such as
natural air leaks and tire inflation pressure changes caused by tempera-
ture. In this case, adjusting the tire inflation pressure will turn off the warn-
ing light (after a few minutes).
 When using the spare tire (vehicles with the tire pressure warning sys-
tem)
As the spare tire is not equipped with a tire pressure warning valve and
transmitter, low inflation pressure of the spare tire will not be indicated by
the tire pressure warning system. Also, if you replace a flat tire with the
spare tire after the tire pressure warning light comes on, the light remains
on.
 Conditions that the tire pressure warning system may not function
properly (vehicles with the tire pressure warning system)
P. 552
AVENSIS_OM_OM20B99E_(EE)
5-2. Steps to take in an emergency
5
627