run flat TOYOTA 4RUNNER 2023 Repair Manual

5448-1. Specifications
4RUNNER (U)
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 l uggage 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

5458-1. Specifications
8
Vehicle specifications
4RUNNER (U)
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

5468-1. Specifications
4RUNNER (U)
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 co ntains 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

5478-1. Specifications
8
Vehicle specifications
4RUNNER (U)
*: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
Te s t r i m
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

562
4RUNNER (U)
8-3. Items to initialize
Items to initialize
The following item must be initialized for normal system opera-
tion after such cases as the battery being reconnected, or main -
tenance being performed on the vehicle:
ItemWhen to initializeReference
Message indicating mainte-
nance is requiredAfter the maintenance is per-
formedP. 404
Tire pressure warning sys-
tem
• When the tire inflation pres- sure is changed such as
when changing traveling
speed or load weight
• When the tire inflation pres-
sure is changed such as
when the tire size is
changed
• When rotating the tires
• After performing the trans- mitter ID code registration
procedure
P. 430

581What to do if... (Troubleshooting)
4RUNNER (U)
●Stop the vehicle in a safe place and replace the flat tire with the spare
tire. ( P. 493)
●Try the procedure for when the vehicle becomes stuck in mud, di rt, or
snow. ( P. 522)
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck

585Alphabetical index
4RUNNER (U)
Driving ...................................... 166Break-in tips .......................... 168
Correct driving posture ........... 30
Driving assist systems .......... 322
Off-road precautions ............. 335
Procedures ........................... 166
Winter drive tips .................... 331
Dynamic radar cruise
control .................................... 257
Eco Driving Indicator ................ 98
EDR (Event data recorder) ........ 10
Electronic key .......................... 102 Battery-saving function ......... 116
If the electronic key does not operate properly ................. 512
Replacing the battery ............ 447
Emergency, in case of
If the electronic key does not operate
properly .............................. 512
If the engine will not start ...... 509
If the vehicle battery is discharged .......................... 515
If the warning buzzer sounds ................................ 477
If the warning light turns on ....................................... 477
If a warning message is displayed......................... 488
If the vehicle is submerged
or water on the road is
rising ................................... 468
If you cannot operate
back door opener ............... 511 If you have a flat tire ............. 493
If you think something
is wrong .............................. 475
If your vehicle becomes stuck ................................... 522
If your vehicle has to be stopped in an emergency ... 467
If your vehicle needs
to be towed......................... 469
If your vehicle overheats....... 519
Emergency flashers ................ 466
Engine
ACCESSORY mode ............. 200
Compartment ........................ 413
Engine switch ....................... 199
Hood ..................................... 412
How to start the engine......... 199
Identification number ............ 525
If the engine will not start ...... 509
Ignition switch (engine switch) ................... 199
Overheating .......................... 519
Engine coolant......................... 417
Capacity................................ 528
Checking............................... 417
Preparing and checking before winter ...................... 331
Engine coolant temperature gauge ....................................... 88
Engine immobilizer system ...... 78
Engine oil ................................. 415
Capacity................................ 527
Checking............................... 415
Preparing and checking before winter ...................... 331
Engine switch .......................... 199
Event data recorder (EDR)........ 10
E

586Alphabetical index
4RUNNER (U)
Flat tire...................................... 493
Floor mats .................................. 28
FluidAutomatic transmission......... 531
Brake .................................... 531
Power steering ...................... 532
Washer ................................. 425
Fog lights ................................. 221 Replacing light bulbs............. 453
Switch ................................... 221
Wattage ................................ 533
Four-wheel drive system ............................ 294, 298
Front passenger occupant classification system .............. 48
Front personal lights ............... 361
Front seats ............................... 129
Adjustment ............................ 129
Cleaning................................ 400
Correct driving posture ........... 30
Driving position memory ....... 142
Head restraints ..................... 146
Seat heaters ......................... 357
Seat position memory ........... 142
Seat ventilators ..................... 357 Front side marker lights ......... 212
Light switch ........................... 212
Replacing light bulbs ............ 458
Wattage ................................ 533
Front turn signal lights ........... 210
Replacing light bulbs ............ 456
Turn signal lever ................... 210
Wattage ................................ 533
Fuel ........................................... 229 Capacity................................ 526
Fuel gauge.............................. 88
Fuel pump shut off system ... 476
Information............................ 534
Refueling .............................. 229
Type.............................. 229, 526
Warning light......................... 480
Fuel filler door ......................... 229
Refueling .............................. 229
Fuel pump shut off system..... 476
Fuses ........................................ 450
Garage door opener ................ 387
Gauges ....................................... 88
Glove box ................................. 364
Grocery bag hooks.................. 373
F
G

592Alphabetical index
4RUNNER (U)
Shift lock system ..................... 207
Side airbags ............................... 37
Side marker lights ................... 212Light switch ........................... 212
Replacing light bulbs............. 458
Wattage ................................ 533
Side mirrors ............................. 153 Adjusting and folding ............ 153
Side turn signal lights ............. 210
Slide deck ................................. 373
Smart key system .................... 113 Antenna location ................... 113
Entry functions ...................... 106
Starting the engine................ 199
Snow tires ................................ 334
Spare tire .................................. 493 Inflation pressure .................. 532
Storage location .................... 494
Spark plug ................................ 528
Specifications .......................... 524
Speedometer .............................. 88
Steering wheel ......................... 149 Adjustment ............................ 149
Storage feature ........................ 363
Storage precautions ................ 179
Stuck If the vehicle becomes
stuck ................................... 522
Sun visors ................................ 375 Switches
Automatic High Beam
switch ................................. 217
Cruise control switch ............ 257
Door lock switches................ 108
Driving position memory switches ............................. 142
Emergency flashers switch ... 466
Engine switch ....................... 199
Fog light switch ..................... 221
Garage door opener
switches ............................. 387
Ignition switch ....................... 199
LDA (Lane Departure Alert) switch ................................. 249
Light switches ....................... 212
Moon roof switches............... 161
Outside rear view mirror switches ............................. 153
Power back window
switch ................................. 158
Power door lock switch ......... 108
Power window switches........ 155
Rear window and outside rear view mirror defoggers
switch ......................... 344, 351
Rear window wiper and
washer switch..................... 226
Seat heater switches ............ 357
Seat ventilator switches ........ 357
“SOS” button........................... 72
Telephone switches
*
VSC OFF switch ................... 324
Window lock switch .............. 155
Windshield wipers and washer switch.............. 223

593Alphabetical index
4RUNNER (U)
Tachometer ................................ 88
Tail lights .................................. 212Light switch ........................... 212
Telephone switches
*
Theft deterrent system
Alarm ...................................... 79
Engine immobilizer system ..... 78
Tire inflation pressure ............. 440 Maintenance data ................. 532
Warning light ......................... 481
Tire information ....................... 537 Glossary................................ 543
Size ....................................... 539
Tire identification number ..... 538
Uniform Tire Quality Grading............................... 541
Tire pressure warning system .................................... 429 Function ................................ 429
Installing tire pressure warning
valves and transmitters ...... 430
Registering ID codes ............ 431
Warning light ......................... 481 Tires .......................................... 427
Chains .................................. 333
Checking............................... 427
If you have a flat tire ............. 493
Inflation pressure .................. 532
Information............................ 537
Replacing.............................. 493
Rotating tires ........................ 428
Size....................................... 532
Snow tires ............................. 334
Spare tire .............................. 493
Tire pressure warning
system .......... ...................... 429
Warning light......................... 481
Tools ......................................... 494
Top tether strap ......................... 68
Total load capacity .................. 181
Towing Dinghy towing ....................... 198
Emergency towing ................ 472
Trailer towing ........................ 182
Toyota Safety Sense P ............ 232 Automatic High Beam ........... 217
Dynamic radar cruise
control ................................ 257
LDA (Lane Departure Alert) ....... 249
PCS (Pre-Collision System) ....... 239
T
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.