Lexus IS 300 2019, Owner'S Manual

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8-2. Steps to take in an emergency
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IS350_300_GE
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Front passenger detection sensor, seat belt reminder and warning buzzer
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If luggage is placed on the front passenger seat, the front passenger detection sensor
may cause the warning light to flash and the warning buzzer to sound even if a passen-
ger is not sitting in the seat.
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If a cushion is placed on the seat, the sensor may not detect a passenger, and the warn-
ing light may not operate properly.
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If the malfunction indicator lamp comes on while driving
The malfunction indicator lamp will come on if the fuel tank becomes completely empty.
If the fuel tank is empty, refuel the vehicle immediately. The malfunction indicator lamp
will go off after several trips.
If the malfunction indicator lamp does not go off, contact your Lexus dealer as soon as
possible.
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Electric power steering system warning light (warning buzzer)
When the battery charge becomes insufficient or the voltage temporarily drops, the
electric power steering system warning light may come on and the warning buzzer may
sound.
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When the tire pressure warning light comes on
Carry out the following procedure after the tire temperature has lowered sufficiently.
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Check the tire inflation pressure and adjust to the appropriate level.
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If the warning light does not go out even after several minutes, check that the tire infla-
tion pressure is at the specified level and carry out initialization.
The warning light may come on again if the above operations are conducted without first
allowing the tire temperature to lower sufficiently.
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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, adjusting
the tire inflation pressure will turn off the warning light (after a few minutes).
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When a tire is replaced with the spare tire (if equipped)
The compact spare tire is not equipped with a tire pressure warning valve and transmit-
ter. 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.
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Conditions that the tire pressure warning system may not function properly
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P. 560
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If the tire pressure warning light frequently comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when the
engine switch is turned to IGNITION ON mode, have it checked by your Lexus dealer.
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Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio
sound.
IS350_IS300_OM_General_OM53F31E