Toyota 2007 Prius Owner's Manual page 152

NOTICE
z Do not use liquid sealants for a flat
tire as tire pressure warning valve
and transmitter will be damaged.
z When the tires must be repaired or
replaced, have them repaired or re-
placed by the nearest Toyota dealer
or an authorized tire dealer. The
tire pressure warning valves and
transmitters will be affected by the
installation or removal of tires.
152
IF THE TIRE PRESSURE
LIGHT COMES ON AFTER BLINKING
FOR 1 MINUTE...
If the tire pressure warning light comes
on after blinking for 1 minute when the
"POWER" switch is selected in "IG−ON"
mode, the tire pressure warning system
is not working properly.
The system will be disabled in the follow-
ing conditions:
(When the condition becomes normal, the
system will work properly.)
D
If tires not equipped with tire pressure
warning valves and transmitters are
used.
D
If the ID code on the tire pressure warn-
ing valves and transmitters is not regis-
tered on the tire pressure warning ECU.
D
If electronic devices or facilities using
similar radio
nearby.
D
If a radio set at similar frequencies is
in use in the vehicle.
D
If a window tint that affects the radio
wave signals is installed.
D
If there is a lot of snow or ice on the
vehicle, in particular around the wheels
or wheel housings.
WARNING
D
If non−genuine Toyota wheels are used.
D
If tire chains are used.
D
If the tire inflation pressure is more
than 500 kPa (5.1 kgf/cm
psi) or higher.
If the tire pressure warning light continues
to come on after blinking for 1 minute
when the "POWER" switch is selected in
"IG−ON" mode, have the system checked
by your Toyota dealer.
Even if you use genuine wheels, the tire
pressure warning system may not work
properly with some types of tires.
wave frequencies are
2
or bar, 73