tire pressure Lexus GS300h 2013 Service Manual

8377-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
When a tire is replaced with a spare tire
The compact spare tire is not equipped with a tire pressure warning valve and
transmitter. If a tire goes flat, the tire pressure warning light will not turn off
even though the flat tire has been replaced with the spare tire.
Conditions that the tire pressure warning system may not function properly
P. 7 6 0
If the tire pressure warning light frequently comes on after blinking for 1 min-
ute
If the tire pressure warning light frequently comes on after blinking for 1
minute when the power switch is turned to ON mode, have it checked by any
authorized Lexus dealer or repairer, or another duly qualified and equipped
professional.
Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an
audio sound.

8387-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
CAUTION
If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact any authorized
Lexus dealer or repairer, or another duly qualified and equipped profes-
sional. The vehicle 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 usual when operating, hold
firmly and operate 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 infla-
tion pressure immediately.
If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, 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 any authorized Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
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.
NOTICE
Precaution when installing a different tire
When differently constructed tires or tires of different makers, models or
tread patterns are installed, the tire pressure warning system may not oper-
ate properly.

8607-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
(If equipped)
Indicates that the fuel
injectors require main-
tenance
Have any authorized
Lexus dealer or
repairer, or another
duly qualified and
equipped professional
replenish the injector
cleaner and reset the
message.
(If equipped)
Indicates that the tire
inflation pressure is
lowCheck the tire inflation
pressure, and adjust to
the appropriate level.
(If equipped)
Indicates a malfunc-
tion in the tire pressure
warning system
Stop the vehicle in a
safe place and turn the
power switch off then
on again.
If the tire pressure
warning indicator
flashes for 1 minute
then illuminates,
there is a malfunction
in the system. Have
the vehicle inspected
by any authorized
Lexus dealer or
repairer, or another
duly qualified and
equipped profes-
sional.
Wa r n i n g m e s s a g eDetailsCorrection procedure

8617-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
(If equipped)
Indicates that the tire
position information
cannot be recognized
Drive for a short while
and check if the display
updates.
If the radio wave
conditions improve,
the display may
return to normal. If
the tire pressure is
still not displayed
after driving for sev-
eral minutes, stop the
vehicle in a safe
place, turn the power
switch off then on
again, and start driv-
ing.
If the tire pressure is
still not displayed
even after repeating
this several times,
have the vehicle
inspected by any
authorized Lexus
dealer or repairer, or
another duly quali-
fied and equipped
professional.
Wa r n i n g m e s s a g eDetailsCorrection procedure

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

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.

8877-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
Emergency tire puncture repair kit components
Bottle
Hose
Air pressure gauge
Compressor switchCompressor
Stickers
Power plug
Air release cap1
2
3
4
5
6
7
8

8927-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
Attach the 2 stickers as shown.
Remove any dirt and moisture
from the wheel before attaching
the sticker.
If you are unable to apply the
stickers, inform the nearest any
authorized Lexus dealer or
repairer, or another duly qualified
and equipped professional that
sealant has been applied to the
puncture when having the tire
repaired or replaced.
Check the specified tire inflation pressure.
Tire inflation pressure is specified
on the label as shown. (P. 936)
Start the hybrid system. (P. 246)
To inject the sealant and
inflate the tire, turn the com-
pressor switch on.
8
9
10
11

8937-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
Inflate the tire until the recom-
mended pressure is reached.
The sealant will be injected
and the pressure will spike to
300 kPa (3.0 kgf/cm
2 or bar,
44 psi) or 400 kPa (4.0 kgf/
cm
2 or bar, 58 psi), and then
gradually decrease.
The air pressure gauge will
display the actual tire infla-
tion pressure about 1 minute
(15 minutes at low tempera-
ture) after the switch is
turned on.
Inject to recommended
pressure.
• Turn the compressor switch
off and then check the tire
inflation pressure. Being
careful not to over inflate,
check and repeat the inflation
procedure until the specified
tire inflation pressure is
reached.
12
1
2
3

8947-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)• If the tire inflation pressure is
still lower than the specified
point after inflation for 10
minutes (35 minutes at low
temperature) with the switch
on, the tire is too damaged to
be repaired. Turn the com-
pressor switch off and contact
any authorized Lexus dealer
or repairer, or another duly
qualified and equipped pro-
fessional.
• If the tire inflation pressure
exceeds the recommended
level, let out some air to
adjust the tire inflation pres-
sure.
(P. 899, 936)