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6-3. Do-it-yourself maintenance
■ Run-flat tires
● The run-flat tires are for only this vehicle.
Do not use the tires on other vehicles.
● Do not mix run-flat tires and normal tires.
● If non-genuine Lexus wheels are used, it
may be impossible to sufficiently demon-
strate the performance of run-flat tires.
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.
The tire pressure warning system of
this vehicle adopts a 2-type warning
system. (P.461)
Multi-information display
Center display
When “Adjust Pressure” is dis-
played on the multi-information dis-
play (Normal Warning)
A warning with the tire pressure warning
light and warning buzzer when there is an
unknown level of low tire pressure with the
appearance of the tire due to natural air
leakage as well as the pressure lowering
due to changes in the pressure according
to the outside temperature.
When “Immediately Check tire
when Safe” is displayed on the
multi-information display (Emer-
gency Warning)
A warning with the tire pressure warning
light and warning buzzer when there is a
known level of low tire pressure with the
appearance of the tire due to pressure sud-
denly lowering.
However, the system may not be able to
detect sudden tire ruptures (bursting, etc.).
The tire pressure detected by the
tire pressure warning system can be
displayed on the center display.
(P.86)
■ 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
vehicle checks.
■ Tire inflation pressure
● It may take a few minutes to display the
tire inflation pressure after the engine
switch is turned to IGNITION ON mode.
It may also take a few minutes to display
the tire inflation pressure after inflation
pressure has been adjusted.
● Tire inflation pressure changes with tem-
perature. The displayed values may also
be different from the values measured
using a tire pressure gauge.
Tire pressure warning system
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