LEXUS GS 300, GS 350 (2019 year). Instruction — part 28
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7-2. Steps to take in an emergency
*
1
: Open door warning buzzer:
*
2
: Driver’s seat belt buzzer:
The driver’s seat belt buzzer sounds to alert the driver that his or her seat belt is not
fastened. Once the engine switch is turned to IGNITION ON mode, the buzzer
sounds for 6 seconds. If the vehicle reaches a speed of 12 mph (20 km/h), the buzzer
sounds once. If the seat belt is still unfastened after 24 seconds, the buzzer will sound
intermittently for 10 seconds. Then, if the seat belt is still unfastened, the buzzer will
sound in a different tone for 20 more seconds.
Front passenger’s seat belt buzzer:
The front passenger’s seat belt buzzer sounds to alert the front passenger that his or
her seat belt is not fastened. The buzzer sounds once if the vehicle reaches a speed of
12 mph (20 km/h). If the seat belt is still unfastened after 24 seconds, the buzzer will
sound intermittently for 10 seconds. Then, if the seat belt is still unfastened, the buzzer
will sound in a different tone for 20 more seconds.
(If equipped)
LKA warning light
The warning light comes on and a warning message is displayed to
indicate that the LKA (Lane-Keeping Assist) system is not available
temporarily or has detected a malfunction.
Warning light
Warning light/Details/Actions
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7-2. Steps to take in an emergency
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■
SRS warning light
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. (
■
Front passenger detection sensor, seat belt reminder and warning buzzer
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
First check the following:
●
Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●
Is the fuel tank cap loose?
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)
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
Check the tire inflation pressure and adjust to the appropriate level. Initializing the tire
pressure warning system will not turn off the tire pressure warning light.
■
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).
■
When a tire is replaced with a spare tire
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
P. 400
■
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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7-2. Steps to take in an emergency
■
Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an audio sound.
■
Customization
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features:
WARNING
■
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 vehi-
cle 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
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and oper-
ate using more force than usual.
■
If the tire pressure warning light comes on
Be sure to observe the following precautions. 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 inflation pressure
immediately.
●
If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, 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 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
The tire pressure warning system may not activate immediately.
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7-2. Steps to take in an emergency
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WARNING
■
Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly when cold and
inflated to the inflation pressure recommended by the vehicle manufacturer on the
vehicle placard or tire inflation pressure label (tire and load information label). (If your
vehicle has tires of a different size than the size indicated on the vehicle placard or tire
inflation pressure label [tire and load information label], you should determine the
proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire pressure moni-
toring system (TPMS-tire pressure warning system) that illuminates a low tire pressure
telltale (tire pressure warning light) when one or more of your tires is significantly
under-inflated. Accordingly, when the low tire pressure telltale (tire pressure warning
light) illuminates, you should stop and check your tires as soon as possible, and inflate
them to the proper pressure. Driving on a significantly under-inflated tire causes the
tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency
and tire tread life, and may affect the vehicle’s handling and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a substitute for proper
tire maintenance, and it is the driver’s responsibility to maintain correct tire pressure,
even if under-inflation has not reached the level to trigger illumination of the TPMS low
tire pressure telltale (tire pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warning system) mal-
function indicator to indicate when the system is not operating properly. The TPMS
(tire pressure warning system) malfunction indicator is combined with the low tire pres-
sure telltale (tire pressure warning light). When the system detects a malfunction, the
telltale will flash for approximately one minute and then remain continuously illumi-
nated. This sequence will continue upon subsequent vehicle start-ups as long as the
malfunction exists. When the malfunction indicator is illuminated, the system may not
be able to detect or signal low tire pressure as intended.
TPMS (tire pressure warning system) malfunctions may occur for a variety of reasons,
including the installation of replacement or alternate tires or wheels on the vehicle that
prevent the TPMS (tire pressure warning system) from functioning properly. Always
check the TPMS (tire pressure warning system) malfunction telltale after replacing one
or more tires or wheels on your vehicle to ensure that the replacement or alternate
tires and wheels allow the TPMS (tire pressure warning system) to continue to function
properly.
NOTICE
■
To ensure the tire pressure warning system operates properly
Do not install tires with different specifications or markers, as the tire pressure warning
system may not operate properly.
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7-2. Steps to take in an emergency
If a warning message is displayed
Master warning light
The master warning light also comes on or flashes in order to indicate that a message
is currently being displayed on the multi-information display.
Multi-information display
If any of the warning light comes on again after the following actions have been
performed, contact your Lexus dealer.
If a warning is shown on the multi-information display, stay calm and perform
the following actions:
GS350/GS300
(except F SPORT models)
GS350/GS300
(F SPORT models)
GS F
1
2
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Warning message and warning buzzer list
Warning message
Details/Actions
(If equipped)
Indicates that there is a high possibility of a frontal colli-
sion, or that the pre-collision braking function is operat-
ing
At the same time,
will appear on the head-up
display.
A buzzer also sounds.
Avoid the collision by decelerating using the brakes
or taking other evasive actions.
(If equipped)
Indicates that your vehicle is nearing the vehicle ahead
(in vehicle-to-vehicle distance control mode)
At the same time,
will appear on the head-up dis-
play (the image flashes).
A buzzer also sounds.
Slow the vehicle by applying the brakes.
(If equipped)
Indicates that the vehicle has deviated from the lane
(while the LKA [Lane-Keeping Assist] system is operat-
ing)
The lane line on the side the vehicle has deviated from
flashes in amber.
At the same time,
will appear on the head-up
display (the image flashes).
A buzzer also sounds.
Check around the vehicle and back to inside of the
lane lines.
Indicates a malfunction in the brake system
A buzzer also sounds.
Have the vehicle inspected by your Lexus dealer
immediately.
Continuing to drive the vehicle may be dangerous.
(U.S.A.)
(Canada)
(Flashes)
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7-2. Steps to take in an emergency
Indicates that hood or one or more of the doors or trunk
are not fully closed
The system also indicates which hood or doors or
trunk are not fully closed.
If the vehicle reaches a speed of 3 mph (5 km/h),
flashes and a buzzer sounds to indicate that
the hood or door(s) or trunk are not yet fully closed.
Make sure that hood or all doors or trunk are
closed.
(If equipped)
Indicates a malfunction in the intuitive parking assist
All assist-sensors flash.
A buzzer also sounds.
Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates that intuitive parking assist sensor is dirty or
covered with ice
A buzzer also sounds.
Clean the sensor.
Warning message
Details/Actions
(GS350/GS300)
(GS F)
(GS350/GS300)
(GS F)
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7-2. Steps to take in an emergency
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Indicates an attempt was made to release the parking
brake with a door open or the front passenger’s seat belt
unfastened
A buzzer also sounds.
Close all doors and fasten the front passenger’s seat
belt before releasing the parking brake.
Indicates that the driver’s door was opened with the shift
position in any position other than P
A buzzer also sounds.
Shift the shift position to P.
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
A buzzer also sounds.
Have the vehicle inspected by your Lexus dealer.
Warning message
Details/Actions
(Flashes)
(Flashes)
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7-2. Steps to take in an emergency
Indicates that the vehicle is being driven at 3 mph (5 km/h)
or more with the parking brake still engaged.
A buzzer also sounds.
Release the parking brake.
Indicates that the parking brake is engaged with the shift
position not in P
A buzzer also sounds.
Change the shift position to P.
Indicates a malfunction in the brake hold system
A buzzer also sounds.
Depress the brake pedal to turn off the brake hold
system.
Have the vehicle inspected by your Lexus dealer
immediately.
Indicates that the brake hold system is turned on while on
a steep slope
A buzzer also sounds.
Do not use only the brake hold system on steep
slopes. Be sure to also depress the brake pedal.
Warning message
Details/Actions
(Flashes)
(Flashes)
(Flashes)
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7-2. Steps to take in an emergency
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Indicates a malfunction in the parking brake system
A buzzer also sounds.
Press the parking brake switch. If the warning mes-
sage is still displayed, have the vehicle inspected by
your Lexus dealer.
Indicates an attempt was made to release the parking
brake without depressing the brake pedal
A buzzer also sounds.
Release the parking brake while depressing the
brake pedal.
Indicates that the shift position was changed and Drive-
Start Control was operated while depressing the accel-
erator pedal
A buzzer also sounds.
Momentarily release the accelerator pedal.
Indicates an attempt was made to shift to 1st gear with
the shift position in M while on a slippery surface
The vehicle will not shift down from 2nd gear.
A buzzer also sounds.
The vehicle will not shift down from 2nd gear.
Warning message
Details/Actions
(Flashes)
(U.S.A.)
(Flashes)
(Canada)
(Flashes)
(Flashes)
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7-2. Steps to take in an emergency
(If equipped)
Indicates that the LKA (Lane-Keeping Assist) system has
determined that the driver does not have their hands on
the steering wheel while the steering control function is
on
If the driver operates the steering wheel only a small
amount, the system may be unable to detect the steer-
ing wheel operations and this warning may be dis-
played.
A buzzer also sounds.
Firmly hold the steering wheel.
(If equipped)
Indicates that steering control function is temporarily
canceled due to the LKA (Lane-Keeping Assist) system
determining that the driver does not have their hands on
the steering wheel while the steering control function is
on
If the driver operates the steering wheel only a small
amount, the system may be unable to detect the steer-
ing wheel operations and this warning may be dis-
played.
Firmly hold the steering wheel.
Indicates that the parking brake system is overheating
A buzzer also sounds.
Do not use the parking brake until the message dis-
appears.
Indicates an engine malfunction
A buzzer also sounds.
Have the vehicle inspected by your Lexus dealer.
Warning message
Details/Actions
(U.S.A.)
(Canada)
(U.S.A.)
(Canada)
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7-2. Steps to take in an emergency
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Indicates an engine malfunction
A buzzer also sounds.
Have the vehicle inspected by your Lexus dealer.
Indicates an engine malfunction
A buzzer also sounds.
Have the vehicle inspected by your Lexus dealer.
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system;
or,
• The seat belt pretensioner system
A buzzer also sounds.
Have the vehicle inspected by your Lexus dealer.
Indicates a malfunction in:
• The ABS; or
• The brake assist system
A buzzer also sounds.
Immediately stop the vehicle in a safe place and
contact your Lexus dealer. Continuing to drive the
vehicle may be dangerous.
Warning message
Details/Actions
(U.S.A.)
(Canada)
(U.S.A.)
(Canada)
452
7-2. Steps to take in an emergency
Indicates that the engine coolant temperature is too high
A buzzer also sounds.
P. 512
(GS350/GS300 only)
Indicates a malfunction in the vehicle’s charging system.
Immediately stop the vehicle in a safe place and
contact your Lexus dealer. Continuing to drive the
vehicle may be dangerous.
(If equipped)
Indicates that the radar sensor is dirty or covered with
ice
A buzzer also sounds.
Clean the sensor.
Warning message
Details/Actions
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7-2. Steps to take in an emergency
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(If equipped)
Indicates that the dynamic radar cruise control system
cannot be used temporarily due to bad weather
A buzzer also sounds.
Use the radar cruise control system when it
becomes available again.
(If equipped)
Indicates that the radar cruise control system brake con-
trol function is temporarily unavailable
A buzzer also sounds.
Depress the brake.
Indicates a malfunction in the smart access system with
push-button start
A buzzer also sounds.
Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates that a Blind Spot Monitor sensor or the sur-
rounding area on the bumper is dirty or covered with ice
A buzzer also sounds.
Clean the sensor and its surrounding area on the
bumper.
Warning message
Details/Actions
(Flashes)
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7-2. Steps to take in an emergency
Indicates a malfunction in the cruise control system or
dynamic radar cruise control system (if equipped)
Press the “ON/OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.
A buzzer also sounds.
Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates a malfunction in the dynamic radar cruise con-
trol with full-speed range
Depress the brake pedal.
A buzzer also sounds.
Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates a malfunction in the LKA (Lane-Keeping
Assist) system
A buzzer also sounds.
Have the vehicle inspected by your Lexus dealer.
(If equipped)
The operation conditions of the camera sensor (tem-
perature, etc.) are not met.
When the operation conditions of the camera sen-
sor (temperature, etc.) are met, the following sys-
tems will become available.
• PCS (Pre-Collision System)
• LKA (Lane-Keeping Assist) system
• Dynamic radar cruise control with full-speed range
• Automatic High Beam
Warning message
Details/Actions
(Flashes)
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7-2. Steps to take in an emergency
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(If equipped)
Indicates that the system is temporarily unavailable due
to a malfunction in a sensor other than the camera sen-
sor
A buzzer also sounds.
Turn the LKA (Lane-Keeping Assist) system off, wait
for a little while, and then turn the LKA (Lane-Keep-
ing Assist) system back on.
(If equipped)
Dirt, rain, condensation, ice, snow, etc., are present on
the windshield in front of the camera sensor.
The following systems may be suspended until the
problem shown in the message is resolved.
• PCS (Pre-Collision System)
• LKA (Lane-Keeping Assist) system
• Dynamic radar cruise control with full-speed range
• Automatic High Beam
Turn the system off, remove any dirt, rain, condensa-
tion, ice, snow, etc., from the windshield, and then
turn the system back on.
(If equipped)
Indicates a malfunction in the PCS (Pre-Collision Sys-
tem)
A buzzer also sounds.
Have the vehicle inspected by your Lexus dealer.
Warning message
Details/Actions
(Flashes)
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