2003 TOYOTA 4RUNNER Owners Manual

’03 4Runner_U (L/O 0305)
363
2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
Treadwear—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 (11/2) 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, C— 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, 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 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.

’03 4Runner_U (L/O 0305)
364
2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)

’03 4Runner_U (L/O 0305)
2003 4RUNNER from Apr. ’03 Prod. (OM35820U)
Seat Belt Warning
WE REALLY CARE ABOUT YOU  PLEASE BUCKLE UP
Toyota has made a special effort to encourage use of seat belts.
Toyota belts are:
Comfortable
Easy to use
Convenient
We encourage you to use your belts every time you drive.
U

’03 4Runner_U (L/O 0305)
2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
Repair Manual Information
You should know as much about the quality and
importance of proper maintenance of your new
vehicle as the people who built it.
The Toyota authorized Repair Manual
tells you how to maintain your vehicle and
enables you to correctly perform your own
maintenance.
The best way to keep your new vehicle in top
running order is to maintain it properly from
the moment you drive it off the showroom
floor.
The Toyota authorized Repair Manual is
packed with literally everything you need to
know to perform your own maintenance in
virtually every area of your new vehicle.

’03 4Runner_U (L/O 0305)
2003 4RUNNER from Apr. ’03 Prod. (OM 35820U)
Where to obtain the
Repair Manual
The repair manual for 4RUNNER, written in
English, may be purchased as applicable from
any Toyota dealer.
Pub. Name: 2003 4RUNNER Repair Manual
Pub. No.: RM1001U1 RM1001U2
RM1034U
Maintenance procedures for the engine,
chassis, body, electrical system, and more,
are clearly explained and illustrated.
Periodic maintenance and tuneup
Periodic maintenance and tuneup helps to pre-
vent small problems from growing into larger ones lat-
er on. The repair manual outlines exactly what main-
tenance is required and clearly explains how to do the
work yourself stepbystep.
Areas covered include such things as spark plug re-
placement, valve clearance adjustment and engine oil
and filter replacement.