Lexus NX 300h 2020 Owner's Manual page 359

Front
A
Tire pressure warning system
Your vehicle is equipped with a tire
pressure warning system that uses tire
pressure warning valves and transmit-
ters to detect low tire inflation pressure
before serious problems arise.
 If the tire pressure drops below a
predetermined level, the driver is
warned by a warning light.
(P.392)
 The tire pressure detected by the
tire pressure warning system can be
displayed on the multi-information
display.
Routine tire inflation pressure checks
■
The tire pressure warning system does not
replace routine tire inflation pressure
checks. Make sure to check tire inflation
pressure as part of your routine of daily
6-3. Do-it-yourself maintenance
vehicle checks.
Situations in which the tire pressure
■
warning system may not operate prop-
erly
● In the following cases, the tire pressure
warning system may not operate prop-
erly.
• If non-genuine Lexus 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 vehi-
cle, particularly around the wheels or
wheel housings.
• If the tire inflation pressure is extremely
higher than the specified level.
• If wheel without the tire pressure warning
valve and transmitter is used.
• If the ID code on the tire pressure warn-
ing valves and transmitters is not regis-
tered in the tire pressure warning
computer.
Performance may be affected in the fol-
●
lowing 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 rap-
●
idly for example when a tire has burst, the
warning may not function.
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