traction control TOYOTA TUNDRA 2001 Owners Manual

'01 TUNDRA_U (L/O 0008)
1032001 TUNDRA (OM 34416U)
Use the front drive control lever to se-
lect the following transfer modes.
ªH2º (high speed position, two±wheel
drive): Lever at ªH2º
Use this for normal driving on dry, hard±
surfaced roads. This position gives greater
economy, the quietest ride and least wear.
ªH4º (high speed position, four±wheel
drive): Lever at ªH4º
Use this for normal driving on wet, icy or
snow±covered roads. This position pro-
vides greater traction than two±wheel
drive. ªNº (neutral position):
Lever at ªNº
No power is delivered to the wheels. The
vehicle must be stopped.
ªL4º (low speed position, four±wheel
drive): Lever at ªL4º
Use this for maximum power and traction.
Use ªL4º for climbing or descending steep
hills, off±road driving, and hard pulling in
sand, mud or deep snow.
The ª4WDº (four±wheel drive) indicator
light comes on when the ªH4º, ªNº or ªL4º
mode is selected.
See ª(c) Shifting procedure (lever type)º
for further instructions.
Four±wheel drive systemÐ
(a) Front drive control
(lever type) (a) Front drive control
(button type)
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'01 TUNDRA_U (L/O 0008)
1842001 TUNDRA (OM 34416U)
Suspension and chassis
CAUTION
Do not modify the suspension/chassis
with lift kits, spacers, springs, etc. It
can cause dangerous handling charac-
teristics, resulting in loss of control.
Types of tires
Determine what kind of tires your ve-
hicle is originally equipped with.
1. Summer tires
Summer tires are high±speed capab ility
tires best suited to highway driving under
dry conditions.
Since summer tires do not have the same
traction performance as snow tires, sum-
mer tires are inadequate for driving on
snow±covered or icy roads. For driving on
snow±covered or icy roads, we recom-
mend using snow tires. If installing snow
tires, be sure to replace all four tires.
2. All season tires
All season tires are designed to provide
better traction in snow and to be adequate
for driving in most winter conditions, as
well as for use all year round.
All season tires, however, do not have
adequate traction performance compared
with snow tires in heavy or loose snow.
Also, all season tires fall short in accel-
eration and handling performance
compared with summer tires in highway
driving.CAUTION

Do not mix summer and all season
tires on your vehicle as this can
cause dangerous handling charac-
teristics, resulting in loss of con-
trol.

Do not use tires other than the
manufacturer 's designated tires, and
never mix tires or wheels of the
sizes different from the originals.
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'01 TUNDRA_U (L/O 0008)
2532001 TUNDRA (OM 34416U)
To equalize the wear and help extend
tire life, Toyota recommends that you
rotate your tires according to the main-
tenance schedule. (For scheduled main-
tenance information, please refer to the
ªScheduled Maintenance Guideº or
ªOwner 's Manual Supplementº.). Howev-
er, the most appropriate timing for tire
rotation may vary according to your
driving habits and road surface condi-
tions.
See ªIf you have a flat tireº in Section 4
for tire change procedure.
When rotating tires, check for uneven
wear and damage. Abnormal wear is usu-
ally caused by incorrect tire pressure, im-
proper wheel alignment, out±of±balance
wheels, or severe braking. WHEN TO USE SNOW TIRES OR
CHAINS
Snow tires or chains are recommended
when driving on snow or ice.
On wet or dry roads, conventional tires
provide better traction than snow tires.
SNOW TIRE SELECTION
If you need snow tires, select the same
size, construction and load capacity as
the original tires on your Toyota.
Do not use tires other than those men-
tioned above. Do not install studded tires
without first checking local regulations for
possible restrictions.
SNOW TIRE INSTALLATION
Snow tires should be installed on all
wheels.
Installing snow tires on the rear w
heels
only can lead to an excessive difference
in road grip capability between the front
and rear tires which could cause loss of
vehicle control.
When storing removed tires, you should
store them in a cool dry place.
Mark the direction of rotation and be sure
to install them in the same direction when
replacing.CAUTION

Do not drive with the snow tires
incorrectly inflated.

Never drive over 120 km/h (75 mph)
with any type of snow tires.
TIRE CHAIN SELECTION
Use the tire chains of correct size.
Regulations regarding the use of tire
chains vary according to location or
type of road, so always check them
before installing chains.
CHAIN INSTALLATION
Install the chains on the rear tires as
tightly as possible. Do not use tire
chains on the front tires. Retighten
chains after driving 0.5Ð1.0 km
(1/4Ð1/2 mile).
When installing chains on your tires, care-
fully follow the instructions of the chain
manufacturer.
If wheel covers are used, they will be
scratched by the chain band, so remove
the covers before putting on the chains.
Installing snow tires and
chains
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'01 TUNDRA_U (L/O 0008)
2832001 TUNDRA (OM 34416U)
TreadwearÐ The treadwear grade is a
comparative rating based on the wear rate
of the tire when tested under controlled
conditions on a specified government test
course. For example, a tire graded 150
would 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 condi-
tions of their use, however, and may de-
part significantly from the norm due to
variations in driving habits, service prac-
tices and differences in road characteris-
tics and climate.
Traction AA, A, B, CÐ 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 mea-
sured under controlled conditions on spe-
cified government 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, CÐ
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 controlled
conditions on a specified indoor laboratory
test wheel. Sustained high temperature
can cause the material of the tire to de-
generate and reduce tire life, and exces-
sive temperature can lead to sudden tire
failure. The grade C corresponds to a lev-
el of performance which all passenger car
tires must meet under the Federal Motor
Vehicle Safety Standard No.109. Grades B
and A represent higher levels of perfor-
mance on the laboratory test wheel than
the minimum required by law.
Warning: The temperature grades for this
tire are established for a tire that is prop-
erly inflated and not overloaded. Exces-
sive speed, underinflation, or excessive
loading, either separately or in combina-
tion, can cause heat buildup and possible
tire failure.
Camper informationÐ
This information has been prepared in ac-
cordance with regulation issued by the Na-
tional Highway Traffic Safety Administra-
tion of the U.S. Department of
Transportation. It provides the purchasers
and/or prospective purchasers of Toyota
vehicles with information on truck±camper
loading. Your Toyota dealer will help an-
swer any questions you may have as you
read this information.
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