2017 Lexus GS450h light

4637-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
*: Driver’s and front passenger’s seat belt buzzer:
The driver’s and front passenger’s seat belt buzzer sounds to alert the driver and front passenger that his or her seat belt is not fastened. The buzzer sounds intermittently for
30 seconds after the vehicle reaches a speed of 20 km/h (12 mph). Then, if the seat belt is still unfastened , the buzzer will sound in a different tone for 90 more seconds.
■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 passen-
ger is not sitting in the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the warn- ing light may not operate properly.
■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 la mp does not go off, contact any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer as soon as possible.
■Electric power steering system warning light (warning buzzer)
When the 12-volt 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.
(If equipped)
Tire pressure warning light When the light comes on:Low tire inflation pressure such as
• Natural causes ( P. 464) • Flat tire ( P. 498, 509)  Adjust the tire inflation pressure to the specified level.
The light will turn off after a few minutes. In case the light does not turn off even if the tire inflation pressure is adjusted, have thesystem checked by any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer. When the light comes on after blinking for 1 minute:Malfunction in the tire pressure warning system
 Have the system checked by any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
(If equipped)
LKA warning lightThe warning light comes on and a warning message is displayed to
indicate that the LKA (Lane-Keepin g Assist) system is not available temporarily or has detected a malfunction. P. 478
Warning lightWarning light/Details/Actions

4647-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
■When the tire pressure warning light comes on (if equipped)
Carry out the following procedure after the tire temperature has lowered sufficiently.
●Check the tire inflation pressure and adjust to the appropriate level.
●If the warning light does not go out even afte r several minutes, check that the tire infla- tion pressure is at the specifie d 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.
■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 flattire has been replaced with the spare tire.
■Conditions that the tire pressure warning system may not function properly
 P. 420
■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 power switch is turned to ON mode, have it checked by any authorized Lexus retailer orLexus authorized repairer, or any reliable repairer.
■Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an audio sound.

4657-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
WARNING
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer. 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
The steering wheel may become extremely heavy. If the steering wheel becomes heavier than us ual 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 pressureimmediately.
●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 any authorized Lexusretailer or Lexus authorized repa irer, or any reliable repairer.
●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 syst em may not activate immediately.
NOTICE
■To ensure the tire pressure warning system operates properly
Do not install tires with different specifications or makers, as the tire pressure warning system may not operate properly.

4667-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
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 any authorized Lexus retailer or Lexus authorized repairer,
or any reliable repairer.
If a warning is shown on the multi-information display, stay calm and perform
the following actions:
Except F SPORT modelsF SPORT models
Warning message and warning buzzer list
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2
Warning messageDetails/Actions
(If equipped)
Indicates that there is a high possibility of a frontal colli-
sion, or that the pre-crash braking function is operating
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.

4817-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
Indicates that the power switch is turned off or turned to ACCESSORY mode and the driver’s door is opened
while the lights are turned on A buzzer also sounds. Turn the lights off.
(If equipped)
Indicates that the moon roof is not fully closed (with the
power switch off, and the driver’s door open) A buzzer also sounds. Close the moon roof.
Indicates that the windows are not fully closed (with the
power switch off, and the driver’s door open) A buzzer also sounds. Close all the windows.
(If equipped)
Indicates that the windows and the moon roof are not
fully closed (with the power switch off, and the driver’s door open)A buzzer also sounds.
 Close all the windows and the moon roof.
Indicates a malfunction in the brake hold system A buzzer also sounds. Have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer.
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(Flashes)
(Flashes)

4847-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
Indicates that engine oil level is low This message may appear if the vehicle is stopped on a
slope. Move the vehicle to a level surface and check to see if the message disappears.A buzzer also sounds.
 Check the level of engine oil, and add if necessary.
Indicates that the hybrid system has overheated This message may be displayed when driving under
severe operating conditions. (For example, when driv- ing up a long steep hill.)A buzzer also sounds.
 Stop and check. (P. 535)
Indicates a malfunction in: • The AHS (Adaptive High-beam System) (ifequipped);
• The Automatic High Beam (if equipped); • The AFS (Adaptive Front-lighting System) (ifequipped); or
• The LED headlight system A buzzer also sounds. Have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer.
(If equipped)
Indicates a malfunction in the RSA (Road Sign Assist)
A buzzer also sounds  Have the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliable
repairer.
Warning messageDetails/Actions

4887-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
(If equipped)
Indicates that the Automatic High Beam switch was pressed while the low beams were on Turn the high beam headlights on before pressing
the Automatic High Beam switch.
(If equipped)
Indicates that the Adaptive High-beam System switch was pressed while th e low beams were on  Turn the high beam headlights on before pressing
the Adaptive High-beam System switch.
(If equipped)
Indicates that, since the VSC (Vehicle Stability Control)
system was turned off, the pre-crash braking and pre- crash brake assist are stopped (The pre-crash warningfunction will be operational)
 Turn the VSC on. (P. 327)
(If equipped)
Indicates that the PCS (Pre-Crash Safety system) is tem- porarily unavailableA buzzer also sounds.
 When conditions improve, the system resumes operation. If this item is displayed continuously, have
the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliablerepairer.
Warning messageDetails/Actions
(Flashes)

5027-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
Chock the tires.
Slightly loosen the wheel nuts (one
turn).
Turn the tire jack portion “A” by hand
until the notch of the jack is in con-
tact with the jack point.
The jack point guides are located under
the rocker panel. They indicate the jack point positions.
Replacing a flat tire
1
Flat tireWheel chock positions
FrontLeft-hand sideBehind the rear right-hand side tire
Right-hand sideBehind the rear left-hand side tire
RearLeft-hand sideIn front of the front right-hand side tire
Right-hand sideIn front of the front left-hand side tire
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