Lexus RX350 2023, Manual

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7-2. Steps to take in an emergency
7
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inflation pressure setting procedure.
(

P.450)
If the warning light does not turn off even
after several minutes have elapsed since
performing the tire inflation pressure set-
ting procedure, have the vehicle inspected
by your Lexus dealer immediately.
■
The tire pressure warning light may
come on due to natural causes
The tire pressure warning light may come
on due to natural causes such as natural air
leaks and tire inflation pressure changes
caused by temperature. In this case, adjust-
ing the tire inflation pressure will turn off the
warning light (after a few minutes).
■ When a tire is replaced with a spare tire
The spare tire is not equipped with a tire
pressure warning valve and transmitter. If a
tire goes flat, the tire pressure warning light
will not turn off even though the flat tire has
been replaced with the spare tire. Replace
the spare tire with the repaired tire and
adjust the tire inflation pressure. The tire
pressure warning light will go off after a few
minutes.
■
Conditions that the tire pressure warn-
ing system may not function properly

P.448
WARNING
■ If both the ABS and the brake system
warning lights remain on
Stop your vehicle in a safe place immedi-
ately and contact your Lexus dealer.
The vehicle will become extremely
unstable during braking, and the ABS
system may fail, which could cause an
accident resulting in death or serious
injury.
■ When the electric power steering
system warning light comes on
When the light comes on yellow, the
assist to the power steering is restricted.
When the light comes on red, the assist
to the power steering is lost and handling
operations of the steering wheel become
extremely heavy.
When steering wheel operations are
heavier than usual, grip the steering
wheel firmly and operate it using more
force than usual.
■ If the tire pressure warning light
comes on
Be sure to observe the following precau-
tions.
Failure to do so could cause a loss of
vehicle control and result in death or
serious injury.
● Stop your vehicle in a safe place as
soon as possible. Adjust the tire infla-
tion pressure immediately.
● If the tire pressure warning light comes
on even after tire inflation pressure
adjustment, it is probable that you have
a flat tire. Check the tires. If a tire is flat,
change it with the spare tire and have
the flat tire repaired by the nearest
Lexus dealer.
● Avoid abrupt maneuvering and brak-
ing.
If the vehicle tires deteriorate, you
could lose control of the steering
wheel or the brakes.
■ If a blowout or sudden air leakage
should occur
The tire pressure warning system may
not activate immediately.