run flat TOYOTA 4RUNNER 2018 (in English) Service Manual

4427-2. Steps to take in an emergency
4RUNNER (U)_(OM35B46U)
CAUTION
■Replacing a flat tire
●Observe the following precautions.
Failure to do so may result in serious injury:
• Lower the spare tire completely to the ground before removing it from under the vehicle.
• Do not try to remove the wheel ornament by hand. Take due care in handling the ornament to avoi d unexpected personal injury.
• Do not attach a heavily damaged wheel ornament, as it may fly off the wheel while the vehicle is moving.
• Do not touch the disc wheels or the area around the brakes immedi-
ately after the vehicle has been driven.
After the vehicle has been driven the disc wheels and the area
around the brakes will be extremel y 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.
• Have the wheel nuts tightened with a torque wrench to 83 ft•lbf (112 N•m, 11.4 kgf•m) steel wheels, 76 ft•lbf (103 N•m, 10.5 kgf•m) alumi-
num wheels, as soon as poss ible after changing wheels.
• When installing a tire, only use w heel nuts that have been specifi-
cally 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
your Toyota dealer.
• When installing the wheel nuts, be sure to install them with the
tapered ends facing inward. ( →P. 379)

4457-2. Steps to take in an emergency
7
When trouble arises
4RUNNER (U)_(OM35B46U)
Lay down the tire with the outer
side facing up, and install the
holding bracket, inserting the
claw into the wheel lug nut hole.
Turn the jack handle extension
clockwise to take up slack in
the chain.
Then, check to ensure the claw
is in the wheel lug nut hole and
the holding bracket is centered
in the wheel hub.Holding bracket
Claw
Vehicles without kinetic
dynamic suspension: While
raising, secure the tire, taking
care that the tire goes straight
up without catching on any sur-
rounding part to prevent it from
flying forward during a collision
or sudden braking.
Vehicles with kinetic dynamic sus pension: While raising, pull the
tire towards the rear of the vehicle, taking care that the tire goes up
without catching on any surrounding part to prevent it from flying
forward during a collision or sudden braking.
Tightening torque:
34.4 ft•lbf (46.6 N•m, 4.8 kgf•m)
CAUTION
■Stowing the flat tire
Failure to follow steps listed under st owing the tire may result in damage
to the spare tire carrier and lose of the tire, which could result in death or
serious injury.
Stowing the flat/spare tire, jack and tools
1
1
2

4467-2. Steps to take in an emergency
4RUNNER (U)_(OM35B46U)
Confirm that the tire is not loose
after tightening:Push and pull the tire
Try rotating
Vishually check to ensure the tire
is not hung on surrounding parts.
If looseness or misassembly
exists, repeat step and step .
Repeat step any time the tire is lowered or disturbed.
Stow the tools and jack securely.
■After completing the tire change
The tire pressure warning system must be reset. ( →P. 371)
■When using the spare tire (vehicles without P245/60R20 tires)
As the spare tire is not equipped with a tire pressure warning valve and
transmitter, low inflation pressure of the spare tire will not be indicated by
the tire pressure warning system. Also, if you replace the spare tire after
the tire pressure warning light comes on, the light remains on.
2
1
2
1
2
32
4

4477-2. Steps to take in an emergency
7
When trouble arises
4RUNNER (U)_(OM35B46U)
NOTICE
■Do not drive the vehicle with 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.
■When stowing the flat tire
Ensure that there is no object cau ght between the tire and the vehicle
underbody.
■When replacing the tires
●When removing or fitting the wheels, tires or the tire pressure warning
valve and transmitter, contact your Toyota dealer as the tire pressure
warning valve and transmitter may be damaged if not handled cor-
rectly.
●Replace the grommets for the tire pressure warning valves and trans-
mitters as well.
■To avoid damage to the tire pressure warning valves and transmit-
ters
When a tire is repaired with liquid sealants, the tire pressure warning
valve and transmitter may not operate properly. If a liquid sealant is
used, contact your Toyota dealer or other qualified service shop as soon
as possible. Make sure to replace the tire pressure warning valve and
transmitter when replacing the tire. ( →P. 371)

4728-1. Specifications
4RUNNER (U)_(OM35B46U)
Chassis lubrication
Propeller shafts
SpiderLithium base chassis grease, NLGI No.2
Slide yoke
Molybdenum-disulfide lithium base chas-
sis grease, NLGI No.2 or lithium base
chassis grease, NLGI No.2
Steering
Free playLess than 1.2 in. (30 mm)
Power steering fluid typeAutomatic transmission fluid DEXRON® II
or III
Tires and wheels
Tire sizeP265/70R17 113S, P245/60R20 107H
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Front:
32 psi (220 kPa, 2.2 kgf/cm2 or bar)
Rear:
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Spare:
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Wheel size17 × 7J, 17 × 7 1/2J, 20 × 7J
Wheel nut torque
Steel wheels:
83 ft•lbf (112 N•m, 11.4 kgf•m)
Aluminum wheels:
76 ft•lbf (103 N•m, 10.5 kgf•m)

4788-1. Specifications
4RUNNER (U)_(OM35B46U)
Load limit at maximum cold tire inflation pressure (→P. 483)
Maximum cold tire inflation pressure (→ P. 483)
This means the pressure to which a tire may be inflated.
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.
Radial tires or bias-ply tires
A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL”
is a bias-ply tire.
DOT symbol*
Tire Identification Number (TIN)
Tire manufacturer's identification mark
Tire size code
Manufacturer's optional tire type code (3 or 4 letters)
Manufacturing week
Manufacturing year
Manufacturer's code
*: The DOT symbol certifies that the tire conforms to applicable Federal Motor Vehicle Safety Standards.
Typical DOT and Tire Identification Number (TIN)
7
8
9
10
Ty p e AType B
1
2
3
4
5
6
7
8

4828-1. Specifications
4RUNNER (U)_(OM35B46U)■
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 dissi-
pate heat when tested under co ntrolled conditions on a specified
indoor laboratory test wheel.
Sustained high temperature can c ause 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 Federal Motor Vehicle Safety Stan-
dard 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
failure.

4838-1. Specifications
8
Vehicle specifications
4RUNNER (U)_(OM35B46U)
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

4848-1. Specifications
4RUNNER (U)_(OM35B46U)
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

4858-1. Specifications
8
Vehicle specifications
4RUNNER (U)_(OM35B46U)
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