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528
7-3. Do-it-yourself maintenance
HIGHLANDER_HV_U
■
Situations in which the tire pressure warning system may not oper-
ate properly
●
In the following cases, the tire pressure warning system may not operate
properly.
• If non-genuine Toyota wheels are used.
• A tire has been replaced with a tire that is not an OE (Original Equip-
ment) 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 specified
level.
• If the spare tire is in a location subject to poor radio wave signal
reception.
*
• If a large metallic object which can interfere with signal reception is
put in the luggage compartment.
*
*
: Vehicles with a 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 facility that generates strong radio waves or
electrical noise
• When carrying a portable radio, cellular phone, cordless phone or
other wireless communication device
●
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.
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