Page 886 of 1014

8597-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
A warning message is shown on the multi-information display.
After taking the specified steps to correct the suspected problem,
check that the warning message goes off.
Follow the correction procedures.
Wa r n i n g m e s s a g eDetailsCorrection procedure
Indicates that the
dynamic radar cruise
control with full-speed
range is unable to
judge vehicle-to-vehi-
cle distance
• Depress the brake
pedal.
• Turn off the snow
mode.
• If the windshield
wipers are on, turn
them off or set them
to a mode other than
AUTO or high speed
wiper operation.
(If equipped)
Indicates that the Auto-
matic High Beam
switch is pressed while
the headlights are in
low beam.Turn the high beam on
and press the Auto-
matic High Beam
switch again.
Indicates that the brake
hold system is not hold
the vehicle when the
vehicle is on a slippery
road
Use the brake hold sys-
tem when it becomes
available.
Indicates that the
washer fluid level is
low
Add washer fluid.
Page 889 of 1014
8627-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
After taking the specified steps to correct the suspected problem,
check that the warning message and light go off.
(If equipped)
Indicates that the pre-
crash safety system is
not currently functional
because the grille cover
or the sensor is dirty
This message also
appears when the
pre-crash safety sys-
tem is not functional
due to overheating.• Check the grille
cover and the sensor
and clean them if
they are dirty.
• In case of overheat-
ing, the system will
become functional
once the system
cools down.
Have the malfunction repaired immediately.
Wa r n i n g m e s s a g eDetailsCorrection procedure
(Flashes)
Inte-
rior
buzzerExterior
buzzerWarning messageDetailsCorrection
procedure
Once
The electronic
key is not
detected when an
attempt is made to
start the hybrid
system.Start the
hybrid sys-
tem with
the elec-
tronic key
present.
(Flashes)
Page 895 of 1014
8687-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
Inte-
rior
buzzerExterior
buzzerWarning messageDetailsCorrection
procedure
Power was turned
off due to the
automatic power
off function.
Next time
when start-
ing the
hybrid sys-
tem,
increase
the engine
speed
slightly
and main-
tain that
level for
approxi-
mately 5
minutes to
recharge
the 12-volt
battery.
Once
The electronic
key has a low bat-
tery.
Replace
the elec-
tronic key
battery.
(P. 779)
Page 908 of 1014

8817-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
The compact spare tire
The compact spare tire is identified by the label “TEMPORARY USE
ONLY” on the tire sidewall.
Use the compact spare tire temporarily, and only in an emergency.
Make sure to check the tire inflation pressure of the compact spare tire.
(P. 936)
When using the compact spare tire (vehicles with the tire pressure warning
system)
As the compact spare tire is not equipped with a tire pressure warning valve
and transmitter, low inflation pressure of the spare tire will not be indicated
by the tire pressure warning system. Also, if you replace the compact spare
tire after the tire pressure warning light comes on, the light remains on.
When the compact spare tire is equipped
The vehicle becomes lower when driving with the compact spare tire com-
pared to when driving with standard tires.
If you have a flat rear tire on a road covered with snow or ice (vehicles with
front and rear tires of the same size and compact spare tire only)
Install the compact spare tire on one of the front wheels of the vehicle. Per-
form the following steps and fit tire chains to the rear tires:
Replace a front tire with the compact spare tire.
Replace the flat rear tire with the tire removed from the front of the vehicle.
Fit tire chains to the rear tires.
1
2
3
Page 926 of 1014

8997-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
If the tire is inflated to more than the recommended level
Disconnect the hose from the valve.
Disconnect the hose from the valve, remove the air release cap from the
hose and then reconnect the hose.
Turn the compressor switch on and wait for several seconds, and then turn
it off. Check that the air pressure indicator shows the recommended level.
(P. 936)
If the air pressure is lower than the recommended level, turn the compres-
sor switch on again and repeat the inflation procedure until the recom-
mended pressure is reached.
The valve of a tire that has been repaired
After a tire is repaired with the emergency tire puncture repair kit, the valve
should be replaced.
After a tire is repaired with the emergency tire puncture repair kit, even if
the tire inflation pressure is at the recommended level, the tire pressure
warning light may come on/flash.
Note for checking the emergency tire puncture repair kit
Check the sealant expiry date occasionally.
The expiry date is shown on the bottle.
Do not use sealant whose expiry date has already passed. Otherwise, repairs
conducted using the emergency tire puncture repair kit may not be performed
properly.Install the air release cap to the end of
the hose and push the protrusion on the
air release cap into the tire valve to let
some air out.
1
2
3
4
Page 966 of 1014

935
8 8-1. Specifications
Vehicle specifications
GS450h_300h_OM_OM30D53E_(EE)Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at
the factory.
Use Lexus approved “Toyota Genuine Differential Gear Oil” or an equiva-
lent of matching quality to satisfy the above specification. Please contact any
authorized Lexus dealer or repairer, or another duly qualified and equipped
professional for further details.
*: Minimum pedal clearance when depressed with a force of 500 N
(51.0 kgf, 112.4 lbf) while the hybrid system is operating.
When performing the brake pedal inspection, also be sure to check that the
brake system warning light is not illuminated when the hybrid system is
operating (If the brake system warning light is illuminated, refer to P.
830).
Differential
Oil capacity1.35 L (1.43 qt., 1.19 Imp.qt.)
Oil type and viscosityToyota Genuine Differential gear oil LT
75W-85 GL-5 or equivalent
Brakes
Pedal clearance*115 mm (4.5 in.) Min.
Pedal free play1.0 — 2.0 mm (0.04 — 0.08 in.)
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3,
SAE J1704 or FMVSS No. 116 DOT 4
Steering
Free playLess than 30 mm (1.2 in.)
Page 991 of 1014
959What to do if... (Troubleshooting)
GS450h_300h_OM_OM30D53E_(EE)
It is locked automatically to prevent theft of the vehicle.
(P. 250)
Is the window lock switch pressed?
The power window except for the one at the driver’s seat
cannot be operated if the window lock switch is pressed.
(P. 215)
The auto power off function will be operated if the vehi-
cle is left in ACCESSORY or ON mode (the hybrid sys-
tem is not operating) for a period of time. (P. 250)
The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat
belts?
(P. 834)
The parking brake indicator is on
Is the parking brake released? (P. 269)
Depending on the situation, other types of warning buzzer
may also sound. (P. 830, 839) The windows do not open or close by operating the power
window switches
The power switch is turned off automatically
A warning buzzer sounds during driving
Page 992 of 1014
960What to do if... (Troubleshooting)
GS450h_300h_OM_OM30D53E_(EE)
Did anyone inside the vehicle open a door or anything
move inside the vehicle during setting the alarm?
The sensor detects them and the alarm sounds. (P. 97)
To stop the alarm, turn the power switch to ON mode or start
the hybrid system.
Is the message displayed on the multi-information dis-
play?
Check the message on the multi-information display.
(P. 834)
When a warning light turns on or a warning message is
displayed, refer to P. 830, 839. An alarm is activated and the horn sounds (if equipped)
A warning buzzer sounds when leaving the vehicle
(vehicles with an entry function)
A warning light turns on or a warning message is displayed