Toyota VIOS Owner's Manual page 468

■ Situations in which the tire pressure warning system may not operate
properly (if equipped)
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 Equipment)
tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains, etc., are 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 wheels without the tire pressure warning valves and transmitters are
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: If the spare tire is in a location subject to
poor radio wave signal reception
• Vehicles with full-size spare tire: If a large metallic object which can inter-
fere with signal reception is put in the trunk
Performance may be affected in the following situations.
●
• Near a TV tower, electric power plant, gas station, radio station, large dis-
play, airport or other facility that generates strong radio waves or electri-
cal 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.
VIOS_OM_GE_OM52L06E(TMT)_OM99V20b(TDB)_OM52L61E(TMP)_0D053(IMC)
7-3. Do-it-yourself maintenance
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