
4798-1. Specifications
8
Vehicle specifications
4RUNNER (U)_(OM35B23U)
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure
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 infla-
tion pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of auto-
matic transmission, power steering, power
brakes, power windows, power seats, radio
and heater, to the extent that these items are
available as factory-installed equipment
(whether installed or not)
Curb weight
The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded vehi-
cle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
*
that follows
Occupant distributionDistribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below

4808-1. Specifications
4RUNNER (U)_(OM35B23U)
Production options
weight
The combined weight of installed regular pro-
duction 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
Rim diameter
(Wheel diameter)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 normal
occupant weight (distributed in accordance
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
Tire related termMeaning

4818-1. Specifications
8
Vehicle specifications
4RUNNER (U)_(OM35B23U)
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
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
compounds
CrackingAny parting within the tread, sidewall, or inner-
liner 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 operate at higher loads and
at higher inflation pressures than the corre-
sponding 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 asym-
metrical tire that has a particular side that
must always face outward when mounted
on a vehicle
Tire related termMeaning

4828-1. Specifications
4RUNNER (U)_(OM35B23U)
Light truck (LT) tire
A tire designated by its manufacturer as pri-
marily 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 per-
missible inflation pressure for that tire
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 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 ele-
vations due to labeling, decorations, or protec-
tive 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 adja-
cent plies
Pneumatic tire
A mechanical device made of rubber, chemi-
cals, fabric and steel or other materials, that,
when mounted on an automotive wheel, pro-
vides 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 operate at higher loads and
at higher inflation pressures than the corre-
sponding standard tire
Tire related termMeaning

4838-1. Specifications
8
Vehicle specifications
4RUNNER (U)_(OM35B23U)
*:Table 1 Occupant loading and distribution for vehicle normal load for
various designated seating capacities
Section width
The linear distance between the exteriors of
the sidewalls of an inflated tire, excluding ele-
vations due to labeling, decoration, or protec-
tive 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 Reference Test Tire, when
using the snow traction test as described in
ASTM F-1805-00, Standard Test Method for
Single Wheel Driving Traction in a Straight
Line on Snow-and Ice-Covered Surfaces, and
which is marked with an Alpine Symbol ( )
on at least one sidewall
Test rim
The 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 circumferentially
around a tire
Tread separationPulling away of the tread from the tire carcass
Treadwear indicators
(TWI)The projections within the principal grooves
designed to give a visual indication of the
degrees of wear of the tread
Wheel-holding fixtureThe fixture used to hold the wheel and tire
assembly securely during testing
Tire related termMeaning

513What to do if... (Troubleshooting)
4RUNNER (U)_(OM35B23U)
●Stop the vehicle in a safe place and replace the flat tire with the spare
tire. (P. 429)
●Try the procedure for when the vehicle becomes stuck in mud, dirt, or
snow. (P. 455)
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck

517Alphabetical index
4RUNNER (U)_(OM35B23U)
Eco Driving Indicator ................ 83
EDR (Event data recorder) ........ 10
Electronic key ............................ 90
Battery-saving function ......... 106
If the electronic key does not
operate properly ................. 446
Replacing the battery ............ 379
Emergency flashers ................ 402
Emergency, in case of
If the electronic key
does not operate
properly .............................. 446
If the engine will not start ...... 442
If the shift lever
cannot be shifted from P .... 444
If the vehicle battery is
discharged .......................... 448
If the warning buzzer
sounds ................................ 413
If the warning light turns
on ....................................... 413
If the warning message
is displayed......................... 422
If you cannot operate
back door opener ............... 445
If you have a flat tire ............. 429
If you think something
is wrong .............................. 411
If your vehicle becomes
stuck ................................... 455
If your vehicle has to be
stopped in an emergency ... 403
If your vehicle needs
to be towed ......................... 405
If your vehicle overheats ....... 452Engine
ACCESSORY mode ............. 195
Compartment ........................ 350
Engine switch ............... 191, 194
Hood ..................................... 349
How to start the
engine ........................ 191, 194
Identification number ............ 459
If the engine will not start ...... 442
Ignition switch
(engine switch) ........... 191, 194
Overheating .......................... 452
Engine coolant......................... 355
Capacity................................ 464
Checking............................... 355
Preparing and checking
before winter ...................... 268
Engine coolant temperature
gauge ....................................... 81
Engine immobilizer system ...... 70
Engine oil ................................. 352
Capacity................................ 461
Checking............................... 352
Preparing and checking
before winter ...................... 268
Engine switch .................. 191, 194
Event data recorder (EDR)........ 10
E

518Alphabetical index
4RUNNER (U)_(OM35B23U)
Flat tire...................................... 429
Floor mats .................................. 26
Fluid
Automatic transmission......... 467
Brake .................................... 467
Power steering ...................... 468
Washer ................................. 363
Fog lights ................................. 210
Replacing light bulbs............. 385
Switch ................................... 210
Wattage ................................ 469
Four-wheel drive
system ............................ 231, 235
Front passenger occupant
classification system .............. 46
Front personal lights ............... 294
Front seats ............................... 119
Adjustment ............................ 119
Cleaning................................ 337
Correct driving posture ........... 28
Driving position memory ....... 132
Head restraints ..................... 136
Seat heaters ......................... 291
Seat position memory ........... 132
Seat ventilators ..................... 291
Front side marker lights.......... 204
Light switch ........................... 204
Replacing light bulbs............. 392
Wattage ................................ 469Front turn signal lights ........... 202
Replacing light bulbs ............ 390
Turn signal lever ................... 202
Wattage ................................ 469
Fuel ........................................... 218
Capacity................................ 460
Fuel gauge.............................. 81
Fuel pump shut off system ... 412
Information............................ 470
Refueling .............................. 218
Type.............................. 218, 460
Warning light......................... 415
Fuel filler door ......................... 218
Refueling .............................. 218
Fuel pump shut off system..... 412
Fuses ........................................ 382
Garage door opener ................ 320
Gauges ....................................... 81
Glove box ................................. 297
Grocery bag hooks.................. 306
F
G