flat tire LEXUS RCF 2021 Service Manual

3267-2. Steps to take in an emergency
Turn the compressor switch off and then
check the tire inflation pressure. Being
careful not to over inflate, check and
repeat the inflation pr ocedure until the rec-
ommended tire inflation pressure is
reached.
If the tire inflation pre ssure is still lower than
the recommended level after inflation for
10 minutes (35 minutes at low tempera-
ture) with the switch on, the tire is too dam-
aged to be repaired. Turn the compressor
switch off and contact your Lexus dealer.
If the tire inflation pressure exceeds the
recommended level, let out some air to
adjust the tire inflation pressure. ( P.327,
347)
14 With the compressor switch off, dis-
connect 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.
15Install the valve cap onto the valve
of the emergency repaired tire.
16 Attach the air release cap to the
end of the hose.
If the air release cap is not attached, the
sealant may leak and the vehicle may get
dirty.
17Temporarily store the bottle in the
trunk while it is connected to the
compressor.
18 To spread the liquid sealant evenly
within the tire, immediately drive safely for about 3 miles (5 km)
below 50 mph (80 km/h).
19 After driving, stop your vehicle in a
safe place on a hard, flat surface
and reconnect the compressor.
20 Turn the compressor switch on and
wait for several seconds, then turn it
off. Check the tire inflation pres-
sure.
If the tire inflatio n pressure is below
19 psi (130 kPa, 1.3 kgf/cm
2 or bar):
The puncture cannot be repaired.
Contact your Lexus dealer.
If the tire inflation pressure is
between 19 psi (130 kPa, 1.3
kgf/cm
2 or bar) and a point below
the recommended level: The tire
can be repaired. Proceed to step
21 .
If the tire inflation pressure is at the
recommended level: Proceed to
A
B
C

3277-2. Steps to take in an emergency
7
When trouble arises
step 22.
21 Turn the compressor switch on to
inflate the tire until the recom-
mended tire inflation pressure is
reached. Drive for about 3 miles (5
km) and then perform step 19 .
22 Attach the air release cap to the
end of the hose.
If the air release cap is not attached, the
sealant may leak and the vehicle may get
dirty.
23Store the bottle in the trunk while it
is connected to the compressor.
24 Taking precautions to avoid sud-
den braking, sudd en acceleration
and sharp turns, drive carefully at
under 50 mph (80 km/h) to your
Lexus dealer that is less than 62
miles (100 km) away for tire repair
or replacement.
■After a tire is repaired with the emer-
gency tire puncture repair kit
●The tire pressure warning valve and
transmitter should be replaced.
●Even if the tire inflat ion pressure is at the
recommended level, the tire pressure
warning light may come on/flash.
■If the tire is inflated to more than the
recommended level
1 Disconnect the hose from the valve.
2 Install the air release cap to the end of
the hose and push th e protrusion on the air release cap into the valve to let some
air out.
3 Disconnect the hose from the valve,
remove the air release cap from the
hose and then reconnect the hose.
4 Turn the compressor switch on and wait
for several seconds, then turn it off.
Check that the air pressure indicator
shows the recommended level.
(  P.347)
If the air pressure is lower than the rec-
ommended level, turn the compressor
switch on again and repeat the inflation
procedure until the recommended
pressure is reached.
WARNING
■When fixing the flat tire
Observe the following precautions.
Failure to do so may result in death or
serious injury.
●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.

3287-2. Steps to take in an emergency
WARNING
• 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 com- pleted, 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 procedure is not
followed, the sealant may spray out.
●Keep back from the tire while it is
being repaired, as th ere 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 kit may overheat if operated for a
long period of time. Do not operate
the compressor continuously for more
than 35 minutes.
●Parts of the kit become hot during
operation. Be careful handling the kit
during and after operation. Do not
touch the metal part around the con-
necting area between the bottle and
compressor. It will be extremely hot.
●Do not attach the vehicle speed warn-
ing 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 airbag
from operating properly.
■Driving to spread the liquid sealant
evenly
●Drive the vehicle carefully at a low
speed. Be especially careful when
turning and cornering.
●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 sepa- rated from the wheel.
• Tire inflation pressure. If tire inflation pressure is 19 psi (130 kPa, 1.3 kgf/cm
2
or bar) or below, this may indicate
severe tire damage.
NOTICE
■When performing an emergency
repair
●Perform the emergency repair with-
out removing the nail or screw that has
punctured the tread of the tire. If the
object that has punctured the tire is
removed, repair by the emergency tire
puncture repair kit may not be possi-
ble.
●The kit is not waterproof. Make sure
that the kit is not exposed to water,
such as when it is being used in the
rain.
●Do not put the kit directly onto dusty
ground such as sand at the side of the
road. If the kit vacuums up dust etc., a
malfunction may occur.
●Make sure to stand the kit with the bot-
tle vertical. The kit cannot work prop-
erly if it is laid on its side.
■Handling the emergency tire punc-
ture repair kit
●The compressor power source should
be 12 V DC suitable for vehicle use.
Do not connect the compressor to any
other source.
●If gasoline splatters on the kit, the kit
may deteriorate. Take care not to allow
gasoline to contact it.

3478-1. Specifications
8
Vehicle specifications
*1: Minimum pedal clearance when depressed with a force of 112.4 lbf (500 N, 51.0 kgf)
while the engine is running.
*2: Parking brake pedal travel when depressed wi th a force of 67.4 lbf (300 N, 30.6 kgf)
Type A
Steering
Free playLess than 1.2 in. (30 mm)
Tires and wheels
Tire sizeFront tires: 255/35ZR19 (92Y)
Rear tires: 275/35ZR19 (96Y)
Tire inflation pressure (Rec-
ommended cold tire inflation
pressure)
Driving under normal conditions
Front: 36 psi (250 kPa, 2.5 kgf/cm
2 or bar)
Rear: 36 psi (250 kPa, 2.5 kgf/cm
2 or bar)
Driving at high speeds (above 137 mph [220 km/h]) (in
countries where such speeds are permitted by law)
Add 8 psi (50 kPa, 0.5 kgf/cm
2 or bar) to the fronttires and
rear tires. Never exceed th e maximum coldtire inflation
pressure indicated on the tire sidewall.
Wheel sizeFront wheels: 19  9J
Rear wheels: 19  10J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

3488-1. Specifications
Type B
A: Wedge base bulbs (amber)
B: Wedge base bulbs (clear)
Tire size
Front tires: 255/35ZR19 (92Y)
Rear tires: 275/35ZR19 (96Y)
Spare tire: 225/40ZR19 (93Y)
Tire inflation pressure (Rec-
ommended cold tire inflation
pressure)
Driving under normal conditions
Front: 36 psi (250 kPa, 2.5 kgf/cm
2 or bar)
Rear: 36 psi (250 kPa, 2.5 kgf/cm
2 or bar)
Spare: 42 psi (290 kPa, 2.9 kgf/cm
2 or bar)
Driving at high speeds (above 137 mph [220 km/h]) (in
countries where such speeds are permitted by law)
Add 8 psi (50 kPa, 0.5 kgf/cm
2 or bar) to the fronttires and
rear tires. Never exceed th e maximum coldtire inflation
pressure indicated on the tire sidewall.
Wheel size
Front wheels: 19  9J
Rear wheels: 19  10J
Spare wheels: 19  8 1/2J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Light bulbs
Light bulbsBulb No.WType
ExteriorRear turn signal lights21A
Interior
Vanity lights8B
Footwell lights1943.8B
Trunk light5B

3518-1. Specifications
8
Vehicle specifications
Tire size (P.352)
DOT and Tire Identification Number (TIN) ( P.352)
Location of treadwear indicators ( P.273)
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands which form the plies
in a tire.
Radial tires or bias-ply tires
A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is a bias-ply tire.
TUBELESS or TUBE TYPE
A tubeless tire does not have a tube and air is directly put into the tire. A tube type tire has a
tube inside the tire and the tube maintains the air pressure.
Load limit at maximum cold tire inflation pressure ( P.354)
Maximum cold tire inflation pressure ( P.354)
This means the pressure to which a tire may be inflated.
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.
Summer tires or all season tires ( P.274)
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a summer tire.
Tire information
Typical tire symbols
A
B
C
D
E
F
G
H
I
J

3548-1. Specifications
■Traction AA, A, B, C
The traction grades, from highest to
lowest, are AA, A, B and C, and they
represent the tire’s ability to stop on
wet pavement as measured under con-
trolled conditions on specified govern-
ment test surfaces of asphalt and
concrete.
A tire marked C may have poor traction
performance.
Warning: The traction grade assigned to
this tire is based on braking (straight
ahead) traction tests and does not include
cornering (turning) traction.
■Temperature A, B, C
The temperature grades are A (the
highest), B, and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and
reduce tire life, and excessive temperature
can lead to sudd
en tire failure.
Grade C corresponds to a level of perfor-
mance which all passenger car tires must
meet under the Fede ral Motor Vehicle
Safety Standard No. 109.
Grades B and A represent higher levels of
performance on the laboratory test wheel
than the minimum required by law.
Warning: The temperature grades of a tire
assume that it is properly inflated and not
overloaded.
Excessive speed, unde rinflation, or exces-
sive loading, either separately or in combi-
nation, can cause heat buildup and
possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pressureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic trans-
mission, power steering, power brakes, power win-
dows, power seats, radio and heater, to the extent
that these items are available as factory-installed
equipment (whether installed or not)

3568-1. Specifications
Vehicle normal load on the tire
The load on an individual tire that is determined by
distributing to each axle its share of curb weight,
accessory weight, and normal occupant weight
(distributed in accor dance with Table 1
* below), and
dividing by two
Weather sideThe surface area of the rim not covered by the
inflated tire
Bead
The part of the tire that is made of steel wires,
wrapped or reinforced by ply cords and that is
shaped to fit the rim
Bead separationA breakdown of the bond between components in
the bead
Bias ply tire
A pneumatic tire in which the ply cords that extend
to the beads are laid at alternate angles substan-
tially less than 90 degrees to the centerline of the
tread
CarcassThe tire structure, except tread and sidewall rubber
which, when inflated, bears the load
ChunkingThe breaking away of pieces of the tread or sidewall
CordThe strands forming the plies in the tire
Cord separationThe parting of cords from adjacent rubber com-
pounds
CrackingAny parting within the tread, sidewall, or innerliner
of the tire extending to cord material
CT
A pneumatic tire with an inverted flange tire and rim
system in which the rim is designed with rim flanges
pointed radially inward and the tire is designed to fit
on the underside of the rim in a manner that
encloses the rim flanges inside the air cavity of the
tire
Extra load tire
A tire designed to operat e at higher loads and at
higher inflation pressures than the corresponding
standard tire
GrooveThe space between two adjacent tread ribs
InnerlinerThe layer(s) forming the in side surface of a tubeless
tire that contains the inflating medium within the tire
Tire related termMeaning

3578-1. Specifications
8
Vehicle specifications
Innerliner separationThe parting of the innerliner from cord material in
the carcass
Intended outboard sidewall
(a) The sidewall that contains a whitewall, bears
white lettering, or bear s manufacturer, brand,
and/or model name molding that is higher or
deeper than the same molding on the other sidewall
of the tire, or
(b) The outward facing sidewall of an asymmetrical
tire that has a particular side that must always face
outward when mounted on a vehicle
Light truck (LT) tire
A tire designated by its manufacturer as primarily
intended for use on lightwe ight trucks or multipur-
pose passenger vehicles
Load ratingThe maximum load that a tire is rated to carry for a
given inflation pressure
Maximum load ratingThe load rating for a tire at the maximum permissi-
ble inflation pressure for that tire
Maximum permissible inflation pres-
sureThe maximum cold inflation pressure to which a tire
may be inflated
Measuring rimThe rim on which a tire is fitted for physical dimen-
sion requirements
Open spliceAny parting at any junction of tread, sidewall, or
innerliner that extends to cord material
Outer diameterThe overall diameter of an inflated new tire
Overall width
The linear distance between the exteriors of the
sidewalls of an inflated tire, including elevations due
to labeling, decorations, or protective bands or ribs
Passenger car tire
A tire intended for use on passenger cars, multipur-
pose passenger vehicles, and trucks, that have a
gross vehicle weight rating (GVWR) of 10,000 lb.
or less.
PlyA layer of rubber-c oated parallel cords
Ply separationA parting of rubber compound between adjacent
plies
Tire related termMeaning

3588-1. Specifications
Pneumatic tire
A mechanical device made of rubber, chemicals,
fabric and steel or other materials, that, when
mounted on an automotive wheel, provides the
traction and contains the gas or fluid that sustains
the load
Radial ply tire
A pneumatic tire in which the ply cords that extend
to the beads are laid at substantially 90 degrees to
the centerline of the tread
Reinforced tire
A tire designed to operat e at higher loads and at
higher inflation pressures than the corresponding
standard tire
Section width
The linear distance between the exteriors of the
sidewalls of an inflated tire, excluding elevations
due to labeling, decoration, or protective bands
SidewallThat portion of a tire between the tread and bead
Sidewall separationThe parting of the rubber compound from the cord
material in the sidewall
Snow tire
A tire that attains a traction index equal to or
greater than 110, compared to the ASTM E-1136
Standard Referenc e Test Tire, when using the snow
traction test as described in ASTM F-1805-00,
Standard Test Method fo r Single Wheel Driving
Traction in a Straight Line on Snow-and Ice-Cov-
ered Surfaces, and which is marked with an Alpine
Symbol ( ) on at least one sidewall
Test rimThe rim on which a tire is fitted for testing, and may
be any rim listed as appropriate for use with that tire
TreadThat portion of a tire that comes into contact with
the road
Tread ribA tread section running ci rcumferentially around a
tire
Tread separationPulling away of the tread from the tire carcass
Tire related termMeaning