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415
6-3. Do-it-yourself maintenance
HIGHLANDER_U
6
Maintenance and care
operate properly.
• If non-genuine Toyota wheels are
used.
• A tire has been replaced with a
tire that is not an OE (Original
Equipment) tire.
• A tire has been replaced with a
tire that is not of the specified size.
• Tire chains, etc. are equipped.
• An auxiliary-supported run-flat tire
is equipped.
• If a window tint that affects the
radio wave signals is installed.
• If there is a lot of snow or ice on
the vehicle, particularly around the
wheels or wheel housings.
• If the tire inflation pressure is
extremely higher than the speci-
fied level.
• If the spare tire is in a location
subject to poor radio wave signal
reception.
*
• If wheel without the tire pressure
warning valve and transmitter is
used.
• If the ID code on the tire pressure
warning valves and transmitters is
not registered in the tire pressure
warning computer.
*
: Vehicles with full-size spare tire
only
● Performance may be affected in
the following situations.
• Near a TV tower, electric power
plant, gas station, radio station,
large display, airport or other facil-
ity that generates strong radio
waves or electrical noise
• When carrying a portable radio,
cellular phone, cordless phone or
other wireless communication
device
● If tire position information is not
correctly displayed due to the
radio wave conditions, the display
may be corrected by driving and
changing the radio wave condi-
tions.
● When the vehicle is parked, the
time taken for the warning to start
or go off could be extended.
● When tire inflation pressure
declines rapidly for example when
a tire has burst, the warning may
not function.
■ Warning performance of the tire
pressure warning system
The warning of the tire pressure
warning system will change in
accordance with the conditions
under which it was initialized. For
this reason, the system may give a
warning even if the tire pressure
does not reach a low enough level,
or if the pressure is higher than the
pressure that was adjusted to when
the system was initialized.
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