Page 896 of 1014
8697-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
Inte-
rior
buzzerExterior
buzzerWarning messageDetailsCorrection
procedure
Once
The driver’s door
was opened and
closed with the
power switch
turned off and
then the power
switch was put in
ACCESSORY
mode twice with-
out the hybrid
system being
started.
Press the
power
switch
while
depressing
the brake
pedal.
During an hybrid
system starting
procedure in the
event that the
electronic key was
not functioning
properly (P.
911), the power
switch was
touched with the
electronic key.
Press the
power
switch
within 10
seconds of
the buzzer
sounding.
Once
The steering lock
could not be
released within 3
seconds of the
power switch
being pressed.
Press the
power
switch
while
depressing
the brake
pedal and
moving the
steering
wheel left
and right.
(Flashes)
(Flashes)
Page 897 of 1014
8707-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an
audio sound.
Inte-
rior
buzzerExterior
buzzerWarning messageDetailsCorrection
procedure
Once
The power switch
has been turned
off with the shift
lever in a posi-
tion other than P
or N.
Shift the
shift lever
to P.
Once
After the power
switch has been
turned off with
the shift lever in a
position other
than P, the shift
lever has been
shifted to P.
Turn the
power
switch off.
(Flashes)
(Flashes)
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 911 of 1014

8847-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
CAUTION
Speed limit when using the compact spare tire
Do not drive at speeds in excess of 80 km/h (50 mph) when a compact
spare tire is installed on the vehicle.
The compact spare tire is not designed for driving at high speeds. Failure to
observe this precaution 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 braking.
NOTICE
Driving with tire chains and the compact spare tire
Do not fit tire chains to the compact spare tire.
Tire chains may damage the vehicle body and adversely affect driving per-
formance.
When replacing the tires (vehicles with the tire pressure warning system)
When removing or fitting the wheels, tires or the tire pressure warning
valve and transmitter, contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional as the tire pressure warn-
ing valve and transmitter may be damaged if not handled correctly.
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 928 of 1014

9017-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
CAUTION
Precautions for use of the sealant
Ingesting the sealant is hazardous to your health. If you ingest sealant,
consume as much water as possible, and then immediately consult a doc-
tor.
If sealant gets in eyes or adheres to skin, immediately wash it off with
water. If discomfort persists, consult a doctor.
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 disconnected or some air is let out of the tire.
Follow the operation procedure to repair the tire. If the procedures not fol-
lowed, the sealant may spray out.
Keep back from the tire while it is being repaired, as there is a chance of it
bursting while the repair operation is being performed. If you notice any
cracks or deformation of the tire, turn off the compressor switch and stop
the repair operation immediately.
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 operation. Be careful handling
the repair kit during and after operation. Do not touch the metal part con-
necting 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 indicated. 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.
Page 930 of 1014

9037-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
NOTICE
Handling the emergency tire puncture repair kit
The repair kit power source should be 12 V DC suitable for vehicle use.
Do not connect the repair kit to any other source.
If gasoline splatters on the repair kit, the repair kit may deteriorate. Take
care not to allow gasoline to contact it.
Store the emergency tire puncture repair kit in the trunk.
The kit may be thrown around during sudden braking and so forth, dam-
aging the kit.
Store the repair kit in the trunk out of reach of children.
Do not disassemble or modify the repair kit. Do not subject parts such as
the air pressure indicator to impacts. This may cause a malfunction.
To avoid damage to the tire pressure warning valves and transmitters (vehi-
cles with the tire pressure warning system)
When a tire is repaired with liquid sealants, the tire pressure warning valve
and transmitter may not operate properly. If a liquid sealant is used, contact
any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional or other qualified service shop as soon as possible.
Make sure to replace the tire pressure warning valve and transmitter when
replacing the tire. (P. 756)
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.)