Page 517 of 620
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7
7-2. Steps to take in an emergency
When trouble arises
GS450h_300h_OM_OM30F00E_(EE)
If you have a flat tire (vehicles with spare tire)
●Stop the vehicle on a hard, flat surface.
●Set the parking brake.
●Shift the shift lever to P.
●Stop the hybrid system.
●Turn on the emergency flashers. (
→P. 4 6 8 )
Your vehicle is equipped with a spare tire. The flat tire can be replaced with
the spare tire.
For details about tires: →P. 4 3 2
WA R N I N G
■If you have a flat tire
Do not continue driving with a flat tire.
Driving even a short distance with a flat tire can damage the tire and the wheel beyond
repair, which could result in an accident.
Before jacking up the vehicle
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5197-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F00E_(EE)
WA R N I N G
■Using the tire jack
Observe the following precautions.
Improper use of the tire jack may cause the vehicle to suddenly fall off the jack, leading
to death or serious injury.
●Do not use the tire jack for any purpose other than replacing tires or installing and
removing tire chains.
●Only use the tire jack that comes with this vehicle for replacing a flat tire.
Do not use it on other vehicles, and do not use other tire jacks for replacing tires on
this vehicle.
●Put the jack properly in its jack point.
●Do not put any part of your body under the vehicle while it is supported by the jack.
●Do not start the hybrid system or drive the vehicle while the vehicle is supported by
the jack.
●Do not raise the vehicle while someone is inside.
●When raising the vehicle, do not put an object on or under the jack.
●Do not raise the vehicle to a height greater than that required to replace the tire.
●Use a jack stand if it is necessary to get under the vehicle.
●When lowering the vehicle, make sure that there is no-one near the vehicle. If there
are people nearby, warn them vocally before lowering.
Page 521 of 620
5217-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F00E_(EE)
Chock the tires.
Slightly loosen the wheel nuts (one
turn).
Turn the tire jack portion “A” by hand
until the notch of the jack is in con-
tact with the jack point.
The jack point guides are located under
the rocker panel. They indicate the jack
point positions.
Replacing a flat tire
1
Flat tireWheel chock positions
FrontLeft-hand sideBehind the rear right-hand side tire
Right-hand sideBehind the rear left-hand side tire
RearLeft-hand sideIn front of the front right-hand side tire
Right-hand sideIn front of the front left-hand side tire
2
3
Page 522 of 620

5227-2. Steps to take in an emergency
GS450h_300h_OM_OM30F00E_(EE)
Raise the vehicle until the tire is
slightly raised off the ground.
Remove all the wheel nuts and the
tire.
When resting the tire on the ground,
place the tire so that the wheel design
faces up to avoid scratching the wheel
surface.
4
5
WA R N I N G
■Replacing a flat tire
●Do not touch the disc wheels or the area around the brakes immediately after the
vehicle has been driven.
After the vehicle has been driven the disc wheels and the area around the brakes will
be extremely hot. Touching these areas with hands, feet or other body parts while
changing a tire, etc. may result in burns.
●Failure to follow these precautions could cause the wheel nuts to loosen and the tire
to fall off, resulting in death or serious injury.
• Never use oil or grease on the wheel bolts or wheel nuts.Oil and grease may cause the wheel nuts to be excessively tightened, leading to
bolt or disc wheel damage. In addition, the oil or grease can cause the wheel nuts
to loosen and the wheel may fall off, causing a serious accident. Remove any oil or
grease from the wheel bolts or wheel nuts.
• Have the wheel nuts tightened with a torque wrench to 103 N•m (10.5 kgf•m, 76 ft•lbf) as soon as possible after changing wheels.
• When installing a tire, only use wheel nuts that have been specifically designed for
that wheel.
• If there are any cracks or deformations in the bolt screws, nut threads or bolt holes of the wheel, have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
Page 524 of 620

5247-2. Steps to take in an emergency
GS450h_300h_OM_OM30F00E_(EE)
Firmly tighten each wheel nut two or
three times in the order shown in the
illustration.
Tightening torque:
103 N•m (10.5 kgf•m, 76 ft•lbf)
Stow the flat tire, tire jack and all tools.
■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. 5 7 5 )
■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 trans-
mitter, 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 warn-
ing light comes on, the light remains on.
■When the compact spare tire is equipped
The vehicle may become lower when driving with the compact spare tire compared 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. Perform the fol-
lowing 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.
4
5
1
2
3
Page 528 of 620
5287-2. Steps to take in an emergency
GS450h_300h_OM_OM30F00E_(EE)
If you have a flat tire (vehicles without spare tire)
●Stop the vehicle in a safe place on a hard, flat surface.
●Set the parking brake.
●Shift the shift lever to P.
●Stop the hybrid system.
●Turn on the emergency flashers. ( →P. 4 6 8 )
Your vehicle is not equipped with a sp are tire, but instead is equipped with an
emergency tire puncture repair kit.
A puncture caused by a nail or screw passing through the tire tread can be
repaired temporarily with the em ergency tire puncture repair kit.
WA R N I N G
■If you have a flat tire
Do not continue driving with a flat tire.
Driving even a short distance with a flat tire can damage the tire and the wheel beyond
repair, which could result in an accident.
Driving with a flat tire may cause a circumferential groove on the side wall.
In such a case, the tire may explode when using a repair kit.
Before repairing the vehicle
Page 535 of 620
5357-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F00E_(EE)
Check the specified tire inflation
pressure.
Tire inflation pressure is specified on the
label as shown. (→P. 5 7 5 )
Start the hybrid system. ( →P. 2 1 7 )
To inject the sealant and inflate the
tire, turn the compressor switch on.
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10
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Page 536 of 620

5367-2. Steps to take in an emergency
GS450h_300h_OM_OM30F00E_(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/cm2 or bar, 58
psi), and then gradually decrease.
The air pressure gauge will dis-
play the actual tire inflation pres-
sure about 1 minute (15 minutes at
low temperature) 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 spec-
ified tire inflation pressure is
reached.
• 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 compressor switch off and contact any
authorized Lexus dealer or repairer, or another duly qualified and equipped
professional.
• If the tire inflation pressure exceeds the recommended level, let out some air to
adjust the tire inflation pressure. ( →P. 5 3 9 , 5 7 5 )
With the compressor switch off, disconnect the hose from the valve on the tire
and then pull out the power plug from the power outlet socket.
Some sealant may leak when the hose is removed.
Install the valve cap onto the valve of the emergency repaired tire.
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2
3
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