flat tire TOYOTA COROLLA HATCHBACK 2021 (in English) Service Manual

5209-1. Specifications
COROLLA H/B_U
18-inch tires
Compact spare tire (if equipped)
Wheel size16  7J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Tire size225/40R18 88V
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Driving under normal conditions
Front tire
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Rear tire
30 psi (210 kPa, 2.1 kgf/cm
2 or bar)
Driving at high speeds (above 100 mph [160
km/h]) (in countries where such speeds are per-
mitted by law)
Add 5 psi (30 kPa, 0.3 kgf/cm
2 or bar) to the front
tires and rear tires. Ne ver exceed the maximum
cold tire inflation pressu re indicated on the tire
sidewall.
Wheel size18  8J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Tire sizeT125/70D17 98M
Tire inflation pressure
(Recommended cold tire
inflation pressure)
60 psi (420 kPa, 4.2 kgf/cm2 or bar)
Wheel size17  4T
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Light bulbs
Light bulbsBulb No.WTy p e
ExteriorFront side marker lights—5A
License plate lights—5A

5249-1. Specifications
COROLLA H/B_U
Full-size tireTire size ( P.526)
DOT and Tire Identification Number (TIN) ( P.526)
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.
Location of treadwear indicators ( P.442)
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 pres-
sure.
Load limit at maximum cold tire inflation pressure ( P.443)
Maximum cold tire inflation pressure ( P.519)
This means the pressure to wh ich a tire may be inflated.
Summer tires or all season tires ( P.443)
Tire information
Typical tire symbols

5259-1. Specifications
COROLLA H/B_U
9
Vehicle specifications
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a
summer tire.
Compact spare tire “TEMPORARY USE ONLY”
A compact spare tire is identified by the phrase “TEMPORARY USE ONLY”
molded on its sidewall. This tire is designed for temporary emergency use
only.
Tire size ( P.526)
DOT and Tire Identification Number (TIN) ( P.526)
Load limit at maximum cold tire inflation pressure ( P.443)
Location of treadwear indicators ( P.442)
Maximum cold tire inflation pressure ( P.519)
This means the pressure to wh ich a tire may be inflated.
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands
which form the plies in a 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 pres-
sure.
Radial tires or bias-ply tires
A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is a
bias-ply tire.

5289-1. Specifications
COROLLA H/B_Uwould wear one and a half (1 - 1/2)
times as well on the government
course as a tire graded 100.
The relative performance of tires
depends upon the actual conditions
of their use. Performance may differ
significantly from the norm due to
variations in driv
ing habits, service
practices and differences in road
characteristics and climate.
■Traction AA, A, B, C
The traction grades, from high-
est to lowest, are AA, A, B and
C, and they represent the tire’s
ability to stop on wet pavement
as measured under controlled
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 corner-
ing (turning) traction.
■Temperature A, B, C
The temperature grades are A (the highest), B, and C, repre-
senting 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 labo-
ratory test wheel.
Sustained high temperature can
cause the material of the tire to
degenerate and reduce tire life, and
excessive temperature can lead to
sudden tire failure.
Grade C corresponds to a level of
performance which all passenger
car tires must meet under the Fed-
eral Motor Vehicle Safety Standard
No. 109.
Grades B and A represent higher
levels of performance on the labo-
ratory 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, underinflation, or
excessive loading, either sepa-
rately or in combination, can cause
heat buildup and possible tire fail-
ure.
Glossary of tire terminology
Tire related termMeaning
Cold tire infl
ation 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 pressure
The maximum cold inflated pressure to
which a tire may be inflated, shown on the
sidewall of the tire

5299-1. Specifications
COROLLA H/B_U
9
Vehicle specifications
Recommended inflation pres-
sureCold tire inflation pressure recommended
by a manufacturer
Accessory weight
The combined weight (in excess of those
standard items which may be replaced) of
automatic transmission, power steering,
power brakes, power windows, power
seats, radio and heater, to the extent that
these items are available as fac-
tory-installed equipment (whether installed
or not)
Curb weight
The weight of a motor vehicle with stan-
dard equipment, including the maximum
capacity of fuel, oil and coolant, and if so
equipped, air conditioning and additional
weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight
150 lb. (68 kg) times the number of occu-
pants specified in the second column of
Table 1
* that follows
Occupant distribution
Distribution of occupants in a vehicle as
specified in the third column of Table 1
*
below
Production options weight
The combined weight of installed regular
production options weighing over 5 lb. (2.3
kg) in excess of the standard items which
they replace, not previously considered in
curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack,
heavy duty battery, and special trim
Rim
A metal support for a tire or a tire and tube
assembly upon which the tire beads are
seated
Tire related termMeaning

5309-1. Specifications
COROLLA H/B_U
Rim diameter (Wheel diame-
ter)Nominal diameter of the bead seat
Rim size designationRim diameter and width
Rim type designationThe industry manufacturer’s designation
for a rim by style or code
Rim widthNominal distance between rim flanges
Vehicle capacity weight (Total
load capacity)The rated cargo and luggage load plus 150
lb. (68 kg) times the vehicle’s designated
seating capacity
Vehicle maximum load on the
tire
The load on an individual tire that is deter-
mined by distributing to each axle its share
of the maximum loaded vehicle weight,
and dividing by two
Vehicle normal load on the tire
The load on an individual tire that is deter-
mined by distributing to each axle its share
of curb weight, accessory weight, and nor-
mal 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 compo-
nents in the bead
Bias ply tire
A pneumatic tire in which the ply cords that
extend to the beads are laid at alternate
angles substantially less than 90 degrees
to the centerline of the tread
Carcass
The tire structure, except tread and side-
wall 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
Tire related termMeaning

5319-1. Specifications
COROLLA H/B_U
9
Vehicle specifications
Cord separationThe parting of cords from adjacent rubber
compounds
Cracking
Any 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 cav-
ity of the tire
Extra load tire
A tire designed to operate at higher loads
and at higher inflation pressures than the
corresponding standard tire
GrooveThe space between two adjacent tread ribs
Innerliner
The layer(s) forming the inside surface of a
tubeless tire that contains the inflating
medium within the tire
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 bears manufac-
turer, 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 lightweight
trucks or multipurpose 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
permissible inflation pressure for that tire
Tire related termMeaning

5329-1. Specifications
COROLLA H/B_U
Maximum permissible inflation
pressureThe maximum cold inflation pressure to
which a tire may be inflated
Measuring rimThe rim on which a tire is fitted for physical
dimension requirements
Open splice
Any parting at any junction of tread, side-
wall, 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,
multipurpose passenger vehicles, and
trucks, that have a gross vehicle weight
rating (GVWR) of 10,000 lb. or less.
PlyA layer of rubber-coated parallel cords
Ply separationA parting of rubber compound between
adjacent plies
Pneumatic tire
A mechanical device made of rubber,
chemicals, fabric and steel or other materi-
als, 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 substan-
tially 90 degrees to the centerline of the
tread
Reinforced tire
A tire designed to operate 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, exclud-
ing elevations due to labeling, decoration,
or protective bands
SidewallThat portion of a tire between the tread
and bead
Tire related termMeaning

5439-3. Initialization
COROLLA H/B_U
9
Vehicle specifications
9-3.Initialization
Items to initialize
The following items must be initialized for normal system
operation after such cases as the battery being reconnected,
or maintenance being performed on the vehicle:
List of items to initialize
ItemWhen to initializeReference
Message indicat-
ing maintenance is
required
• After maintenance is performedP. 4 2 6
Tire pressure warn-
ing system
• When rotating the tires.
• When the tire inflation pressure is changed, such as when the
tire size is changed.
• When the tire inflation pressure is changed, such as when
changing traveling speed.
• When changing between two registered wheel sets
P. 4 4 8

558What to do if... (Troubleshooting)
COROLLA H/B_U
 Is the electronic key left inside
the vehicle?
Check the message on the
multi-information display. ( P.482)
 When a warning light turns on
or a warning message is dis-
played, refer to P.472, 482.
 Vehicles with an emergency
tire puncture repair kit: Stop
the vehicle in a safe place and
repair the flat tire temporarily
with the emergency tire punc-
ture repair kit. ( P.484)
 Vehicles with spare tire: Stop
the vehicle in a safe place and
replace the flat tire with the
spare tire. ( P.494)
 Try the procedure for when
the vehicle becomes stuck in
mud, dirt, or snow. ( P.512)
A warning buzzer sounds
when leaving the vehicle
A warning light turns on
or a warning message is
displayed
When a problem has
occurred
If you have a flat tire
The vehicle becomes
stuck