Page 471 of 668

471 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350_200t_GS F_OM_OM30E87E_(EE)
■When initialization of the tire pressure warning system has failed (vehicles with the tire
pressure warning system)
Initialization can be co mpleted in a few minutes. However, in the following cases, the set-
tings have not been recorded and the syst em will not operate properly. If repeated
attempts to record tire inflation pressure settings are unsuccessful, have the vehicle
inspected by any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
●The initialization message is not displayed on the multi-information display when per-
forming initialization.
●After carrying out the initializat ion procedure, the tire pressure warning light blinks for 1
minute then stays on after driving for 20 minutes.
■Registering ID codes (vehicles with the tire pressure warning system)
The ID codes of the tire pressure warning valve and transmitters for two sets of wheels
can be registered.
It is not necessary to register the ID codes when replacing normal tires with snow tires, if
the ID codes for the wheels of both normal tires and snow tires are registered before-
hand.
For information about changing ID codes, ask any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional.
■Certification for tire pressure warning system (vehicles with the tire pressure warning
system)
Page 477 of 668

477 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350_200t_GS F_OM_OM30E87E_(EE)
WA R N I N G
■When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drive train as well as dangerous han-
dling characteristics, which may lead to an accident resulting in death or serious injury.
●Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
●Do not use tire sizes other than those recommended by Lexus.
●Do not mix differently constructed tires (radial, bias-belted or bias-ply tires).
●Do not mix summer, all season and snow tires.
●Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously.
●Vehicles with spare tire (GS350/GS200t with compact spare tire, and GS F):
Do not tow if your vehicle has a spare tire installed.
●Vehicles with emergency tire puncture repair kit: Do not tow anything if a tire that has
been repaired using the emergency tire punc ture repair kit is installed. The load on
the tire may cause unexpected damage to the tire.
■When initializing the tire pressure warning system (vehicles with the tire pressure
warning system)
Do not initialize tire inflation pressure withou t first adjusting the tire inflation pressure to
the specified level. Otherwise, the tire pre ssure warning light may not come on even if
the tire inflation pressure is low, or it ma y come on when the tire inflation pressure is
actually normal.
■Caution regarding interference with electron ic devices (vehicles with the tire pres-
sure warning system featuring a tire inflation pressure display function)
●Users of any electrical medical device other than implantable cardiac pacemakers,
cardiac resynchronization therapy-pacemakers or implantable cardioverter defibril-
lators should consult the manufacturer of the device for information about its opera-
tion under the influence of radio waves.
Radio waves could have unexpected effects on the operation of such medical
devices.
●People with implantable cardiac pacemakers,
cardiac resynchronization therapy-pacemak-
ers or implantable cardioverter defibrillators
should not come within 450 mm (17.7 in.) of
the tire pressure warning system initiators.
The radio waves may affect the operation of
such devices.
Page 501 of 668

501
7When trouble arises
GS350_200t_GS F_OM_OM30E87E_(EE)
7-1. Essential informationEmergency flashers.................. 502
If your vehicle has to be stopped
in an emergency ..................... 503 7-2. Steps to take in an
emergency
If your vehicle needs to be towed................................504
If you think something is wrong........................................ 510
Fuel pump shut off system ......... 511
If a warning light turns on or a warning buzzer
sounds............................................512
If a warning message is displayed ................................. 518
If you have a flat tire (vehicles with spare tire)........................... 551
If you have a flat tire (vehicles without spare tire)................... 567
If the engine will not start ........583
If the shift lever cannot be shifted from P............................585
If the parking brake cannot be released.................586
If the electronic key does not operate properly .................... 588
If the vehicle battery is discharged .............................. 591
If your vehicle overheats ......... 596
If the vehicle becomes stuck ......................... 602
Page 518 of 668
5187-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30E87E_(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 Lexu s dealer or repairer, or another duly
qualified and equipped professional.
If a warning is shown on the multi-information display, stay calm and perform
the following actions:
XGS350/GS200t
(except F SPORT models) XGS350/GS200t
(F SPORT models)
XGS F
1
2
Page 519 of 668

5197-2. Steps to take in an emergency
7
When trouble arises
GS350_200t_GS F_OM_OM30E87E_(EE)
Warning message and warning buzzer list
Wa r n i n g m e s s a g eDetails/Actions
(If equipped)
Indicates that there is a high possibility of a frontal colli-
sion, or that the pre-crash br aking 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.
(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] or LDA [Lane
Departure Alert with steering control] system are oper-
ating)
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.
Page 523 of 668

5237-2. Steps to take in an emergency
7
When trouble arises
GS350_200t_GS F_OM_OM30E87E_(EE)
(GS350/GS200t only)
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 any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
(GS350/GS200t only)
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.
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
any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
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.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)
(Flashes) (Flashes)
Page 533 of 668

5337-2. Steps to take in an emergency
7
When trouble arises
GS350_200t_GS F_OM_OM30E87E_(EE)
(If equipped)
Indicates a malfunction in the VGRS (Variable Gear
Ratio Steering)A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
(If equipped)
Indicates a malfunction in the DRS (Dynamic Rear
Steering) A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
(GS350/GS200t only)
Indicates a malfunction in th e electronically controlled
brake system A buzzer also sounds.
→ Immediately stop the vehicle in a safe place and
contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Continuing to drive in th is condition is dangerous.
Indicates an attempt was made to engage the parking
brake while driving
A buzzer also sounds.
→ Press the parking brake switch. If the warning mes-
sage is still displayed, have the vehicle inspected by
any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
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
any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
Wa r n i n g m e s s a g eDetails/Actions
Page 536 of 668
5367-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30E87E_(EE)
(GS350/GS200t only)
Indicates that the brake hold system cannot be turned offA buzzer also sounds.
→ Depress the brake pedal.
(GS350/GS200t only)
Indicates that the brake hold system is not available
The reason the brake hold system is not available may
be displayed.
A buzzer also sounds.
→ Close the driver’s door.
→ Fasten the driver’s seat belt.
(GS350/GS200t only)
Indicates that the brake hold system is unable to con-
tinue brake hold function
The reason the brake hold system is not continue may
be displayed.
A buzzer also sounds.
→ Depress the brake pedal.
→ Close the driver’s door.
→ Fasten the driver’s seat belt.
Wa r n i n g m e s s a g eDetails/Actions