Srs Warning Light; Front Passenger Detection Sensor, Seat Belt Reminder And Warning Buzzer; If The Malfunction Indicator Lamp Comes On While Driving; Electric Power Steering System Warning Light (Warning Buzzer) - Lexus 2016 IS 200t Service Manual

SRS warning light

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This warning light system monitors the airbag sensor assembly, front impact sensors, side
impact sensors (front door), side impact sensors (front), side impact sensors (rear),
driver' s seat position sensor, driver' s seat belt buckle switch, front passenger occupant
classification system, "AIR BAG ON" indicator light, "AIR BAG OFF" indicator light,
front passenger' s seat belt buckle switch, seat belt pretensioner assemblies, airbags,
interconnecting wiring and power sources. (P. 38)

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 passenger
is not sitting in the seat.

If the malfunction indicator lamp comes on while driving

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First check the following:
Is the fuel tank empty?
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If it is, fill the fuel tank immediately.
Is the fuel tank cap loose?
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If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon as
possible.

Electric power steering system warning light (warning buzzer)

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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.
When the tire pressure warning light comes on
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Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire
pressure warning reset switch will not turn off the tire pressure warning light.
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).
When a tire is replaced with the spare tire
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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.
Conditions that the tire pressure warning system may not function properly
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P. 439
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 is turned to IGNITION 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.
IS350/300/200t_U (OM53D18U)
8-2. Steps to take in an emergency
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