2017 Lexus GS450h warning

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
1
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.

4677-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
(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 malfunctio n in the brake system A buzzer also sounds.
 Have the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliable
repairer. Continuing to drive the vehicle may be dangerous.
Warning messageDetails/Actions
(Flashes)

4687-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
Indicates a malfunction in the gasoline engine or that the
shift lever is in N for a long period of time A buzzer also sounds. Release the accelerator pedal and change the shift
position to D, S or R.
Indicates that the driver’s door was opened with the shift position in any position other than PA buzzer also sounds.
 Shift the shift position to P.
Indicates a malfunction in the hybrid system A buzzer also sounds.
 Immediately stop the vehicle in a safe place and contact any authorized Lexus retailer or Lexusauthorized repairer, or any reliable repairer.
Indicates that hood or one or more of the doors or trunkare not fully closed
The system also indicates which hood or doors or trunk are not fully closed.If the vehicle reaches a speed of 5 km/h (3 mph),
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.
Warning messageDetails/Actions
(Flashes)
(Flashes)

4697-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
(If equipped)
Indicates a malfunction in the Lexus parking assist All assist-sensors flash.
A buzzer also sounds.  Have the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliable
repairer.
(If equipped)
Indicates that Lexus parking a ssist-sensor is dirty or cov- ered with ice
A buzzer also sounds.  Clean the sensor.
Indicates an attempt was made to release the parking
brake with a door open or the front passenger’s seat belt unfastenedA buzzer also sounds.
 Close all doors and fasten the front passenger’s seat belt before releasing the parking brake.
Warning messageDetails/Actions
(Flashes)

4707-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
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 that the accelerator pedal is depressed while the shift lever is in N
A buzzer also sounds.  Release the accelerator pedal and shift the shift position to D, S or R.
Indicates that the accelerator pedal is depressed whilethe shift lever is in NA buzzer also sounds.
 Release the accelerator pedal and shift the shift position to D, S or R.
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)

4717-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
Indicates that the hybrid battery (traction battery) power has dropped because a long period of time has elapsedafter shifting the shift lever to N
A buzzer also sounds.  Restart the hybrid system when starting the vehicle.
Indicates a malfunction in the hybrid system Depending on the malfunctio n, troubleshooting meth-
ods may also be displayed. A buzzer also sounds. Immediately stop the vehicle in a safe place and
contact any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
Indicates that the traction battery is low
A buzzer also sounds.  When stopping the vehicle for a long period of time, shift the shift lever to P. The battery cannot be
charged with the shift lever in N.
Indicates a malfunction in the EPS (Electric Power Steer-
ing) 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)