
721-1. For safe use
GS450h_300h_OM_OM30F00E_(EE)
WA R N I N G
■When installing a child restraint system
●Never use a rear-facing child restraint system
on the front passenger seat when the airbag
manual on-off switch is on. (→P. 5 3 )
The force of the rapid inflation of the front
passenger airbag can cause death or serious
injury to children in the event of an accident.
●There is a label(s) on the passenger side sun
visor, indicating it is forbidden to attach a rear-
facing child restraint system to the front pas-
senger seat.
Details of the label(s) are shown in the illustra-
tion below.

4025-5. Using the other interior features
GS450h_300h_OM_OM30F00E_(EE)
The coat hooks are provided with the
rear assist grips.
NOTICE
●To prevent 12-volt battery discharge, do not operate the rear sunshade when the
hybrid system is off.
●Observe the following precautions to ensure normal operation of the rear sunshade
and rear door sunshades.
• Do not place excessive load on the motor or other components of the rear sun-shade.
• Do not place objects where they may hinder opening and closing operations.
• Do not attach items to the rear sunshade and rear door sunshades.
• Keep the opening clean and clear of obstructions.
• Do not operate the rear sunshade continuously for long periods of time.
Coat hooks
WA R N I N G
Do not hang coat hangers or other hard or sharp objects on the hook. If the SRS cur-
tain shield airbags deploy, these items may become projectiles, causing death or seri-
ous injury.

4116-1. Maintenance and care
6
Maintenance and care
GS450h_300h_OM_OM30F00E_(EE)
■Caring for leather areas
Lexus recommends cleaning the interior of the vehicle at least twice a year to maintain
the quality of the vehicle’s interior.
■Shampooing the carpets
There are several commercial foaming-type cleaners available. Use a sponge or brush to
apply the foam. Rub in overlapping circles. Do not use water. Wipe dirty surfaces and let
them dry. Excellent results are obtained by keeping the carpet as dry as possible.
■Seat belts
Clean with mild soap and lukewarm water us ing a cloth or sponge. Also check the belts
periodically for excessive wear, fraying or cuts.
■When cleaning the carpeted portions of the glove box, console box, etc.
If a strong adhesive tape is used, there is a possibility that the surface of the carpet could
be damaged.
WA R N I N G
■Water in the vehicle
●Do not splash or spill liquid in the vehicle, such as on the floor, in the hybrid battery
(traction battery) air vents, and in the trunk.
Doing so may cause the hybrid battery, electrical components, etc. to malfunction or
catch fire.
●Do not get any of the SRS components or wiring in the vehicle interior wet. ( →P. 44)
An electrical malfunction may cause the airbags to deploy or not function properly,
resulting in death or serious injury.
■Cleaning the interior (especially instrument panel)
Do not use polish wax or polish cleaner. The instrument panel may reflect off the wind-
shield, obstructing the driver’s view and leading to an accident, resulting in death or
serious injury.

4767-2. Steps to take in an emergency
GS450h_300h_OM_OM30F00E_(EE)
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, but 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 any authorized Lexus dealer or repairer, or
another duly qualified an d equipped professional.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
Brake system warning light (warning buzzer)
•Low brake fluid
• Malfunction in the electron ically controlled brake system
→ 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 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 any
authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
Malfunction indicator lamp
Indicates a malfunction in:
• The hybrid system;
• The emission control system (if equipped);
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic hybrid transmission control system (if equipped)
→ Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system
→ Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.

5417-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F00E_(EE)
WA R N I N G
■When fixing the flat tire
●Stop your vehicle in a safe and flat area.
●Do not touch the wheels or the area around the brakes immediately after the vehicle
has been driven.
After the vehicle has been driven, the wheels and the area around the brakes may be
extremely hot. Touching these areas with hands, feet or other body parts may result in
burns.
●Connect the valve and hose securely with the tire installed on the vehicle.
●If the hose is not properly connected to the valve, air leakage may occur or sealant
may be sprayed out.
●If the hose comes off the valve while inflating the tire, there is a risk that the hose will
move abruptly due to air pressure.
●After inflation of the tire has completed, the sealant may splatter when the hose is dis-
connected or some air is let out of the tire.
●Follow the operation procedure to repair the tire. If the procedures not followed, the
sealant may spray out.
●Keep back from the tire while it is being re paired, as there is a chance of it bursting
while the repair operation is being performe d. If you notice any cracks or deforma-
tion of the tire, turn off the compressor sw itch and stop the repair operation immedi-
ately.
●The repair kit may overheat if operated for a long period of time. Do not operate the
repair kit continuously for more than 35 minutes.
●Parts of the repair kit become hot during op eration. Be careful handling the repair kit
during and after operation. Do not touch the metal part connecting the bottle and the
compressor. It will be extremely hot.
●Do not attach the vehicle speed warning sticker to an area other than the one indi-
cated. If the sticker is attached to an area where an SRS airbag is located, such as the
pad of the steering wheel, it may prevent the SRS air bag from operating properly.
■Driving to spread the liquid sealant evenly
●Drive the vehicle carefully at a low speed. Be especially careful when turning and cor-
nering.
●If the vehicle does not drive straight or you feel a pull through the steering wheel, stop
the vehicle and check the following:
• Tire condition. The tire may have separated from the wheel.
• Tire inflation pressure. If tire infl ation pressure is 130 kPa (1.3 kgf/cm
2 or bar, 19 psi)
or less, the tire may be severely damaged.

602Alphabetical index
GS450h_300h_OM_OM30F00E_(EE)
Alphabetical index
A/C ............................................................ 366Air conditioning filter........................ 449
Changing the rear seat settings................................................. 373
Front automatic air
conditioning system ......................366
nanoe™ system .................................. 376
Pollen removal mode ...................... 372
Rear air conditioning system .......378
S-FLOW mode.................................. 367
ABS (Anti-lock Brake System) ....... 344
Function .................................................. 344
Warning light ....................................... 477
Warning message.............................482
Adaptive Front-lighting System
(AFS) .....................................................238
Adaptive Variable Suspension
system (AVS) ......................................345
AFS (Adaptive Front-lighting
System) ..................................................238
AHS (Adaptive High-beam
System) .................................................. 240
Air conditioning filter .......................... 449
Air conditioning system ..................... 366 Air conditioning filter........................ 449
Changing the rear seat settings................................................. 373
Front automatic air conditioning system ......................366
nanoe™ system .................................. 376
Pollen removal mode ...................... 372
Rear air conditioning system .......378
S-FLOW mode.................................. 367 Airbags ........................................................ 43
Airbag manual on-off system......... 53
Airbag operating conditions ...........49
Airbag precautions for
your child .............................................. 45
Airbag warning light ........................ 476
Correct driving posture.................... 36
Curtain shield airbag operating
conditions ..............................................49
Curtain shield airbag
precautions ...........................................47
General airbag precautions ........... 45
Locations of airbags ............................43
Modification and disposal of
airbags.................................................... 48
Side airbag operating
conditions ..............................................49
Side airbag precautions .................... 45
Side and curtain shield airbags operating conditions ........................49
Side and curtain shield airbags precautions .......................................... 45
SRS airbags ..............................................43
Airbag manual on-off system ............. 53
Alarm............................................................ 90 Alarm .......................................................... 90
Warning buzzer..................... 476, 482
Anchor brackets ...................................... 65
Antennas (smart entry & start system) .........................................153
Anti-lock Brake System (ABS)....... 344 Function.................................................. 344
Warning light........................................ 477
Warning message ............................ 482
A