2003 TOYOTA TUNDRA service

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2003 TUNDRA from Jul. ’03 Prod. (OM34430U)
Foreword
Welcome to the growing group of value −conscious people who drive Toyotas. We are proud of the advanced engineering and
quality construction of each vehicle we build.
This Owner ’s Manual explains the operation of your new Toyota. Please read it thoroughly and have all the occupants
follow the instructions carefully. Doing so will help you enjoy many years of safe and troublefree motoring. For
important information about this manual and your Toyota, read the following pages carefully.
When it comes to service, remember that your Toyota dealer knows your vehicle best and is interested in your complete
satisfaction. He will provide quality maintenance and any other assistance you may require.
If there is not a Toyota dealer near you, or you need emergency assistance for any reason, please call the following number:
U.S. OWNERS: Toyota Customer Assistance Center Tollfree: 18003314331
CANADIAN OWNERS:Toyota Canada Customer Interaction Centre Tollfree: 1888TOYOTA8 (18888696828)
Please leave this Owner ’s Manual in this vehicle at the time of resale. The next owner will need this information also.
All information and specifications in this manual are current at the time of printing. However, because of Toyota’s policy of
continual product improvement, we reserve the right to make changes at any time without notice.
Please note that this manual applies to all models and explains all equipment, including options. Therefore, you may
find some explanations for equipment not installed on your vehicle.
©2003 TOYOTA MOTOR CORPORATION
All rights reserved. This material may not be reproduced or copied, in whole or in part, without the written permission of Toyo ta
Motor Corporation.

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2003 TUNDRA from Jul. ’03 Prod. (OM34430U)
Scrapping of your Toyota
The SRS airbag and seat belt pretensioner devices in your
Toyota contain explosive chemicals. If the vehicle is
scrapped with the airbags and pretensioners left as they
are, this may cause an accident such as fire. Be sure to
have the systems of the SRS airbag and seat belt preten-
sioner removed and disposed of by a qualified service
shop or by your Toyota dealer before you dispose of your
vehicle.
Onpavement and offroad
driving tips
This vehicle will handle and maneuver differently from an
ordinary passenger car because it is designed for off −road
use also. It has a significantly higher rollover rate than
other types of vehicles. In addition, this vehicle has a
higher ground clearance and center of gravity than that of
an ordinary passenger car. This vehicle design feature
causes this type of vehicle to be more likely to rollover.
Failure to operate this vehicle correctly may result in loss
of control, accidents or vehicle rollover causing death or
serious injury. Be sure to read “Off −road vehicle precau-
tions” in Section 2 and “Off −road driving precautions” in
Section 3.

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2003 TUNDRA from Jul. ’03 Prod. (OM 34430U)
1 OPERATION OF INSTRUMENTS AND CONTROLSPage
1 Overview of instru ments and controls
NO TAG
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2 Keys and DoorsNO TAG
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3 Seats, Seat belts, Steering wheel and MirrorsNO TAG
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4 Lights and WipersNO TAG
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5 Gauges, Meters and Service reminder indicatorsNO TAG
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6 Ignition switch, Transmission and Parking brakeNO TAG
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7 Car audio systemNO TAG
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8 Air conditioning systemNO TAG
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9 Other equipmentNO TAG
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2 INFORMATION BEFORE DRIVING YOUR TOYOTA NO TAG . . . . .
3 STARTING AND DRIVING NO TAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 IN CASE OF AN EMERGENCY NO TAG . . . . . . . . . . . . . . . . . . . . . . . . .
5 CORROSION PREVENTION AND APPE ARANCE CARE NO TAG
6 VEHICLE MAINTENANCE AND CARE NO TAG . . . . . . . . . . . . . . . . . .
7 DOITYOURSELF MAINTENANCE
1 IntroductionNO TAG
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2 Engine and ChassisNO TAG
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3 Electrical componentsNO TAG
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8 SPECIFICATIONS NO TAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
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9 REPORTING SAFETY DEFECTS FOR U.S. OWNERS AND CAMPER INFORMATION NO TAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 0 INDE X NO TAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
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Table of contents

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2003 TUNDRA from Jul. ’03 Prod. (OM 34430U)
1. Oil pressure gauge
2. Service reminder indicators and
indicator lights
3. Tachometer 4. Speedometer
5. Automatic transmission indicator lights
6. Voltmeter
7. Fuel gauge8. Trip meter reset knob
9. Odometer and two trip meters
10. Engine coolant temperature gauge
Instrument cluster overview
 With tachometer

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2003 TUNDRA from Jul. ’03 Prod. (OM 34430U)
1. Engine coolant temperature gauge
2. Service reminder indicators and
indicator lights 3. Speedometer
4. Fuel gauge
5. Trip meter reset knob
6. Odometer and two trip meters

Without tachometer

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2003 TUNDRA from Jul. ’03 Prod. (OM 34430U)
∗
1: For details, see “Service reminder indicators and warning
buzzers” in Section 1 −5.
∗
2: If this light flashes, see “Four −wheel drive system” in Sec-
tion 1 −6.
∗
3: If this light flashes, see “Cruise control” in Section 1− 6.
Cruise control indicator light
∗
3
Low speed four −wheel drive indicator light∗
2
Four −wheel drive indicator light
High speed four −wheel drive indicator light
∗
2
Automatic transmission indicator lights

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2003 TUNDRA from Jul. ’03 Prod. (OM 34430U)
The driver and front passenger ’s seat
belt pretensioners are designed to be
activated in response to a severe fron-
tal impact.
When the airbag sensor detects the shock
of a severe frontal impact, the front seat
belts are quickly drawn back in by the
retractors so that the belts snugly restrain
the front seat occupants.
The front seat belt pretensioners are acti-
vated even with no passenger in the front
seat.
Collisions occurring at certain s peeds and
angles may cause the seat belt preten-
sioners and SRS airbags not to operate
all together.This indicator comes on when the igni-
tion key is turned to the “ON” position.
It goes off after about 6 seconds. This
means the front seat belt pretensioners
are operating properly.
This warning light system monitors the
airbag sensor assembly, front airbag sen-
sors, seat belt pretensioner assemblies,
inflators, warning light, interconnecting wir-
ing and power sources. (For details, see
“Service reminder indicators and warning
buzzers” in Section 1 −5.)The front seat belt pretensioner system
mainly consists of the following compo-
nents and their locations are shown in the
illustration.
1. Front airbag sensors
2. SRS warning light
3. Front seat belt pretensioner assemblies
4. Airbag sensor assembly
The front seat belt pretensioners are con-
trolled by the airbag sensor assembly. The
airbag sensor assembly consists of a saf-
ing sensor and airbag sensor.
—Front seat belt
pretensioners

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2003 TUNDRA from Jul. ’03 Prod. (OM 34430U)
When the front seat belt pretensioners are
activated, an operating noise may be
heard and a small amount of smoke −like
gas may be released. This gas is harm-
less and does not indicate that a fire is
occurring.
Once the front seat belt pretensioners
have been activated, the seat belt retrac-
tors remain locked.
CAUTION
Do not modify, remove, strike or open
the front seat belt pretensioner as-
semblies, airbag sensor or surround-
ing area or wiring. Doing so may
cause sudden operation of the front
seat belt pretensioners or disable the
system, which could result in death
or serious injury.
Failure to follow these instructions
can result in death or serious inju-
ries. Consult your Toyota dealer
about any repairs and modifications.
NOTICE
Do not perform any of the following
changes without consulting your
Toyota dealer. Such changes can
interfere with proper operation of the
front seat belt pretensioners in some
cases.
 Installation of electronic devices
such as a mobile twoway radio,
cassette tape player or compact
disc player
 Repairs on or near the front seat
belt pretensioner assemblies
 Modification of the suspension sys-
tem
 Modification of the front end struc-
ture
 Attachment of a grille guard (bull
bar, kangaroo bar, etc.), snowplow,
winches or any other equipment to
the front end
 Repairs made on or near the front
fenders, front end structure or con-
sole
This front seat belt pretensioner system
has a service reminder indicator to inform
the driver of operating problems. If any of
the following conditions occurs, this
indicates a malfunction of the airbags or
pretensioners. Contact your Toyota dealer
as soon as possible to service the
vehicle.
The light does not come on when the
ignition key is turned to the “ON” posi-
tion, or the light remains on.
The light comes on or flashes while
driving.
If either front seat belt does not retract
or cannot be pulled out due to a mal-
function or activation of the relevant
front seat belt pretensioner.