
452
GS350_200t_GS F_OM_OM30E86U_(U)7-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds
Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, bu
t then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by your Lexus dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning light (warning buzzer) •Low brake fluid
• Malfunction in the brake booster system
Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
(If equipped)
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
Immediately stop the vehicle in a safe place and contact your
Lexus dealer.
(U.S.A.)
(Canada)
Malfunction indicator lamp Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system
Have the vehicle inspected by your Lexus dealer immediately.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
Have the vehicle inspected by your Lexus dealer immediately.
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system
Have the vehicle inspected by your Lexus dealer immediately.

4577-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30E86U_(U)
7
When trouble arises
■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: P. 5 6 8 )
WA R N I N G
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediat ely 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 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 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.

4667-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30E86U_(U)
Indicates an engine malfunctionA 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.
Wa r n i n g m e s s a g eDetails/Actions
(U.S.A.) (Canada)
(U.S.A.) (Canada)

5017-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30E86U_(U)
7
When trouble arises
WA R N I N G
■When the spare tire is attached
The vehicle speed may not be correctly detected, and the following systems may not
operate correctly:
Also, not only can the following system not be utilized fully, but it may even negatively
affect the drive-train components:
•AWD system
■Speed limit when using the spare tire
Do not drive at speeds in excess of 50 mp h (80 km/h) when a spare tire is installed on
the vehicle.
The spare tire is not designed for driving at high speeds. Failure to observe this precau-
tion may lead to an accident causing death or serious injury.
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their storage
location to reduce the possibility of personal injury during a collision or sudden brak-
ing.
NOTICE
■Be careful when driving over bumps with the spare tire installed on the vehicle.
The vehicle may become lower when driving with the spare tire compared to when
driving with standard tires. Be careful when driving over uneven road surfaces.
■Driving with tire chains and the spare tire
Do not fit tire chains to the spare tire.
Tire chains may damage the vehicle body and adversely affect driving performance.
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and trans-
mitter, contact your Lexus dealer as the tire pressure warning valve and transmitter
may be damaged if not handled correctly.
• ABS & Brake assist
•VSC
•TRAC
•Cruise control
• Dynamic radar cruise control with
full-speed range (if equipped)
• Dynamic radar cruise control
(if equipped)
• PCS (Pre-Collision System) (if equipped)
•EPS
•AFS (if equipped)
• Adaptive Variable Suspension system (if equipped) • LDA (Lane Departure Alert with
steering control) (if equipped)
• LKA (Lane-Keeping Assist) (if equipped)
• Tire pressure warning system
•VDIM
• Lexus parking assist monitor
• Intuitive parking assist (if equipped)
• Navigation system (if equipped)
• DRS (if equipped)
• VGRS (if equipped)
• LDH (if equipped)

604Alphabetical index
GS350_200t_GS F_OM_OM30E86U_(U)
Alphabetical index
A/C ............................................................ 328Air conditioning filter........................ 427
Changing the rear seat settings ................................................ 335
Front automatic air conditioning system ................................................. 328
Micro dust and pollen filter ...........334
Rear air conditioning system........339
S-FLOW mode ..................................329
ABS (Anti-lock Brake System).......308 Function ................................................. 308
Warning light .......................................452
Warning message ............................ 459
Active Sound Control (ASC) ...........214
Adaptive Front-lighting System (AFS) ........................................................216
Adaptive Variable Suspension system (AVS)...................................... 309
AFS (Adaptive Front-lighting System) ....................................................216
Air conditioning filter ...........................427
Air conditioning system ..................... 328 Air conditioning filter........................ 427
Changing the rear seat settings ................................................ 335
Front automatic air conditioning system ................................................. 328
Micro dust and pollen filter ...........334
Rear air conditioning system........339
S-FLOW mode ..................................329 Airbags .......................................................... 41
Airbag operating conditions .......... 48
Airbag precautions for your child ....................................... 44
Airbag warning light ........................ 452
Correct driving posture .................... 34
Curtain shield airbag operating conditions ....................... 48
Curtain shield airbag precautions .......................................... 46
Front passenger occupant classification system......................... 52
General airbag precautions ........... 44
Locations of airbags.............................. 41
Modification and disposal of airbags................................................47
Side airbag operating conditions ............................................. 48
Side airbag precautions .................... 44
Side and curtain shield airbags operating conditions ....................... 48
Side and curtain shield airbags precautions .......................................... 44
SRS airbags ............................................... 41
Alarm ............................................................ 74 Alarm ...........................................................74
Warning buzzer.....................452, 459
Anchor brackets.......................................63
Antennas (smart access system with push-button start) .....................150
Anti-lock Brake System (ABS) ...... 308 Function ................................................. 308
Warning light ....................................... 452
Warning message............................. 459
A

621Alphabetical index
GS350_200t_GS F_OM_OM30E86U_(U)
Warning buzzersApproach warning ................273, 285
Brake system........................................452
Downshifting ........................................207
Intuitive parking assist
*
Key reminder ...................................... 488
Open door ............................................. 461
Open moon roof ...............................475
Open hood ............................................ 461
Open trunk ............................................ 461
Open window .....................................475
Seat belt reminder .............................454
Warning lights .......................................... 80 ABS ...........................................................452
AFS OFF indicator ............................453
Brake system........................... 452, 454
Charging system................................452
Electric power steering...................453
Low fuel level .......................................454
Malfunction indicator lamp ...........452
Master warning light.........................454
Open door ............................................454
Parking brake indicator ..................454
Pre-collision system..........................453
Seat belt reminder light...................454
Slip indicator .........................................453
SRS ............................................................452
Tire pressure ........................................454 Warning messages.............................. 459
Warning reflector storage belt .......357
Washer ...................................................... 222
Checking ................................................. 412
Low washer fluid warning message........................... 459
Preparing and checking before winter ......................................316
Switch .......................................................222
Washing and waxing .......................... 378
Weight Cargo capacity.....................................194
Load limits ...............................................194
Weight ....................................................538
Welcome light illumination control .....................................................138
Wheels Replacing ............................................... 425
Size .......................................................... 550
Window glasses...................................... 175
Window lock switch.............................. 175
Windows.................................................... 175 Power windows.................................... 175
Rear window defogger .................. 334
Washer ....................................................222
Windshield wiper de-icer ................. 334
Windshield wipers ................................222 Position .................................................... 318
Rain-sensing windshield wipers....................................................222
W
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.