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The tire pressure warning light may come on due to natural causes
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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, adjusting the tire
inflation pressure will turn off the warning light (after a few minutes).
Conditions that the tire pressure warning system may not function properly
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P.350
If the tire pressure warning light frequently comes on after blinking for 1 minute
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If the tire pressure warning light frequently comes on after blinking for 1 minute when the
engine switch <power switch> is turned to IGNITION ON mode <ON mode>, have it
checked by your Lexus dealer.
Warning buzzer
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In some cases, the buzzer may not be heard due to being in a noisy location or audio sound.
WARNING
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If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately 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.
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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.
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If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a loss of vehi-
cle control and result in death or serious injury.
Decelerate to the lowest appropriate speed as soon as possible. Do not drive over 80
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km/h (50 mph).
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Check and adjust the tire inflation pressure immediately.
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If the tire pressure warning light comes on even after tire inflation pressure adjustment,
it is probable that you have a flat tire. Have the flat tire replaced by the nearest Lexus
dealer.
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Avoid abrupt maneuvering and braking. 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
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The tire pressure warning system may not activate immediately.
7-2. Steps to take in an emergency
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