2003 TOYOTA TUNDRA catalytic converter

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2003 TUNDRA from Jul. ’03 Prod. (OM 34430U)
INFORMATION BEFORE DRIVING YOUR
TOYOTA
Information before driving your Toyota
Off−road vehicle precautions 186
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Break −in period 187
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Fuel 187
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Fuel pump shut off system 189
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Operation in foreign countries 189
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Three −way catalytic converters 190
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Engine exhaust cautions 191
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Facts about engine oil consumption 192
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Twin ground electrode spark plugs 193
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Brake system 193
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Brake pad wear limit indicators 196
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Rear step bumper 196
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StepSide bed 197
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Limited −slip differential 197
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Your Toyota’s identification 197
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Theft prevention labels 199
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Suspension and chassis 199
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Tire information 200
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Vehicle load limits 208
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Cargo and luggage 209
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Types of tires 211
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SECTION 2

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2003 TUNDRA from Jul. ’03 Prod. (OM 34430U)
When driving offroad or in rugged
terrain, do not drive at excessive
speeds, jump, make sharp turns,
strike objects, etc. This may cause
loss of control or vehicle rollover
causing death or serious injury. You
are also risking expensive damage
to your vehicle’s suspension and
chassis.
Do not drive horizontally across
steep slopes. Driving straight up or
straight down is preferred. Your ve-
hicle (or any similar offroad ve-
hicle) can tip over sideways much
more easily than forward or back-
ward.
Drive gently and avoid high speeds.
Your vehicle does not need an elaborate
break−in. But following a few simple tips
for the first 1600 km (1000 miles) can add
to the future economy and long life of
your vehicle:
Avoid full throttle acceleration when
starting and driving.
Avoid racing the engine.
Try to avoid hard stops during the first
300 km (200 miles).
Do not drive slowly with the manual
transmission in a high gear.
Do not drive for a long time at any
single speed, either fast or slow.
Do not tow a trailer during the first 800
km (500 miles). FUEL TYPE
Your new vehicle must use only un-
leaded gasoline.
To help prevent gas station mix
−ups, your
Toyota has a smaller fuel tank opening.
The special nozzle on pumps with un-
leaded fuel will fit it, but the larger stan-
dard nozzle on pumps with leaded gas will
not.
At a minimum, the gasoline you use
should meet specifications of ASTM
D4814 in the U.S.A. and CGSB 3.5 −M93
in Canada.
NOTICE
Do not use leaded gasoline. Use of
leaded gasoline will cause the three
way catalytic converter to lose its ef-
fectiveness and the emission control
system to function improperly. Also,
this can increase maintenance costs.
Breakin period Fuel

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2003 TUNDRA from Jul. ’03 Prod. (OM 34430U)
5VZFE engine
2UZFE engine
The threeway catalytic converter is an
emission control device installed in the
exhaust system.
The purpose is to reduce pollutants in the
exhaust gas.
CAUTION
Keep people and combustible mate-
rials away from the exhaust pipe
while the engine is running. The
exhaust gas is very hot.
Do not idle or park your vehicle
over anything that might burn easi-
ly such as grass, leaves, paper or
rags.
NOTICE
A large amount of unburned gases
flowing into the threeway catalytic
converter may cause it to overheat
and create a fire hazard. To prevent
this and other damage, observe the
following precautions:
Use only unleaded gasoline.
 Do not drive with an extremely low
fuel level; running out of fuel could
cause the engine to misfire, creat-
ing an excessive load on the three
way catalytic converter.
 Do not allow the engine to run at
idle speed for more than 20 minu-
tes.
 Avoid racing the engine.
 Do not pushstart or pullstart your
vehicle.
 Do not turn off the ignition while
the vehicle is moving.
Threeway catalytic converters

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2003 TUNDRA from Jul. ’03 Prod. (OM 34430U)
Keep your engine in good running
order. Malfunctions in the engine
electrical system, electronic ignition
system/distributor ignition system
or fuel systems could cause an ex-
tremely high threeway catalytic
converter temperature.
 If the engine becomes difficult to
start or stalls frequently, take your
vehicle in for a checkup as soon
as possible. Remember, your Toyota
dealer knows your vehicle and its
threeway catalytic converter sys-
tem best.
 To ensure that the threeway cata-
lytic converter and the entire emis-
sion control system operate proper-
ly, your vehicle must receive the
periodic inspections required by the
Toyota Maintenance Schedule. For
scheduled maintenance information,
refer to the “Scheduled Maintenance
Guide” or “Owner ’s Manual Supple-
ment”.CAUTION
Avoid inhaling the engine exhaust.
It contains carbon monoxide, which
is a colorless and odorless gas. It
can cause unconsciousness or even
death.
Make sure the exhaust system has
no holes or loose connections. The
system should be checked from
time to time. If you hit something,
or notice a change in the sound of
the exhaust, have the system
checked immediately.
Do not run the engine in a garage
or enclosed area except for the
time needed to drive the vehicle in
or out. The exhaust gases cannot
escape, making this a particularly
dangerous situation.
Do not remain for a long time in a
parked vehicle with the engine run-
ning. If it is unavoidable, however,
do so only in an unconfined area
and adjust the heating or cooling
system to force outside air into the
vehicle.
To allow proper operation of your
vehicle’s ventilation system, keep
the inlet grilles in front of the wind-
shield clear of snow, leaves, or oth-
er obstructions.
If you smell exhaust fumes in the
vehicle, drive with the windows
open. Have the cause immediately
located and corrected.
Toyota does not recommend occu-
pying the rear cargo area when it
is fitted with a slidein camper,
camper shell or other type cover
while the engine is running. This
caution applies to both driving and
stopped or parked situations with
the engine running. Particular care
should be taken to prevent exhaust
gases from entering camper bodies,
trailers or other enclosures on or
around your vehicle. If exhaust
fumes are detected, open all win-
dows and thoroughly ventilate the
area.
Engine exhaust cautions

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2003 TUNDRA from Jul. ’03 Prod. (OM 34430U)
Before making these checks, make sure
you have followed the correct starting pro-
cedure given in “How to start the engine”
in Section 3 and that you have sufficient
fuel.
If the engine is not turning over or is
turning over too slowly—
1. Check that the battery terminals are tight and clean.
2. If the battery terminals are O.K., switch on the interior light.
3. If the light is out, dim or goes out when the starter is cranked, the battery
is discharged. You may try jump start-
ing. See “(c) Jump starting” for further
instructions.
If the light is O.K., but the engine still will
not start, it needs adjustment or repair.
Call a Toyota dealer or qualified repair
shop.
NOTICE
Do not pull or pushstart the ve-
hicle. Your vehicle may suddenly
move when the engine starts, and
may damage itself or cause a colli-
sion. Also the threeway catalytic
converter may overheat and become a
fire hazard.
If the engine turns over at its normal
speed but will not start— 1. Turn the ignition key to “ACC” or “LOCK” and try starting the engine
again.
2. If the engine will not start, the engine may be flooded because of repeated
cranking. See “(b) Starting a flooded
engine” for further instructions.
3. If the engine still will not start, it needs adjustment or repair. Call a Toyota
dealer or qualified repair shop. If the engine will not start, your engine
may be flooded because of repeated
cranking.
If this happens, turn the key to “START”
with the accelerator pedal fully depressed.
Keep the key and accelerator pedal in
these positions for 15 seconds and re-
lease them. Then try starting the engine
with your foot off the accelerator pedal.
If the engine does not start after 15 se-
conds of cranking, release the key, wait
a few minutes and try again.
If the engine still will not start, it needs
adjustment or repair. Call a Toyota dealer
or qualified repair shop for assistance.
NOTICE
Do not crank for more than 30 se-
conds at a time. This may overheat
the starter and wiring systems.
If your vehicle will not start—
(a) Simple checks
(b) Starting a flooded engine
(5VZFE engine)

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2003 TUNDRA from Jul. ’03 Prod. (OM 34430U)
Cranking hold function 214
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Cruise control 123
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Cup holders 179
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D
Differential, Limited slip 197
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Dimmer switch, Headlight 92
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Dinghy towing 219
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Directional signals 92
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Discharge warning light 104
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Do −it−yourself maintenance
Parts and tools 276
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Service precautions 274
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Does your vehicle need repairing? 269 . . . . .
Doors
Access door 14
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Front door 12
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Driver ’s seat belt reminder buzzer 104 . . . . . .
Driver ’s seat belt reminder light 104 . . . . . . . .
Driving
Automatic transmission 113
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Driving tips 214
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Manual transmission 117
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Driving tips
Driving tips in various conditions 215 . . . . .
Driving with a manual transmission 117
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Driving with an automatic transmission 113
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Economical driving 230
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Good driving practice 113,117
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Winter driving tips 218
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During
Break −in 187
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E
Economical driving
Saving money on both fuel and repairs 230 . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical system
Battery 296,297 . . . . . . . . . . . . . . . . . . . . . . . .
Fuse locations 274 . . . . . . . . . . . . . . . . . . . . .
Fuses 298 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Emergency flasher switch 93 . . . . . . . . . . . . . .
Emergency, In case of
Blown fuse 298 . . . . . . . . . . . . . . . . . . . . . . . .
Emergency flasher switch 93 . . . . . . . . . . . .
Flat tire 239 . . . . . . . . . . . . . . . . . . . . . . . . . . .
If you cannot increase the engine speed 238 . . . . . . . . . . . . . . . . . . . . . . . . . . .
If you lose your keys 257 . . . . . . . . . . . . . . . .
If you lose your remote keyless entry transmitter 258 . . . . . . . . . . . . . . . . . . . . . .
If your engine stalls while driving 237 . . . . . . . . . . . . . . . . . . . . . . . . . .
If your vehicle becomes stuck 251 . . . . . . .
If your vehicle needs to be towed 252 . . . . . . . . . . . . . . . . . . . . . . . . . . .
If your vehicle will not start 234 . . . . . . . . . .
Jump starting 235 . . . . . . . . . . . . . . . . . . . . . .
Overheating 238 . . . . . . . . . . . . . . . . . . . . . . .
Towing 252 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Emissions Inspection and Maintenance (I/M) programs 270 . . . . . . . . .
Engine
Before starting the engine 214 . . . . . . . . . . .
Checking the coolant level 282 . . . . . . . . . .
Emission control device 190 . . . . . . . . . . . . .
Engine compartment 272 . . . . . . . . . . . . . . . Exhaust gas caution 191
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Hood release 23 . . . . . . . . . . . . . . . . . . . . . . .
Identification number 198 . . . . . . . . . . . . . . .
Oil consumption 192 . . . . . . . . . . . . . . . . . . . .
Oil level 280 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil pressure gauge 101 . . . . . . . . . . . . . . . . .
Overheating 238 . . . . . . . . . . . . . . . . . . . . . . .
Starting procedure 214 . . . . . . . . . . . . . . . . .
Three −way catalytic converters 190 . . . . . .
Engine coolant
Temperature gauge 100 . . . . . . . . . . . . . . . . .
Winter driving tips 218 . . . . . . . . . . . . . . . . . .
Engine coolant temperature
gauge 100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine oil
Winter driving tips 218 . . . . . . . . . . . . . . . . . .
Engine oil pressure gauge 101 . . . . . . . . . . . . .
Exhaust gas caution 191 . . . . . . . . . . . . . . . . . .
F
Facts about engine oil
consumption 192 . . . . . . . . . . . . . . . . . . . . . . .
Flasher, Headlight 92 . . . . . . . . . . . . . . . . . . . . .
Flat tire
After changing wheels 250 . . . . . . . . . . . . . .
Changing tire 247 . . . . . . . . . . . . . . . . . . . . . .
If you have a flat tire 239 . . . . . . . . . . . . . . . .
Jack point 245 . . . . . . . . . . . . . . . . . . . . . . . . .
Jacking precautions 239 . . . . . . . . . . . . . . . .
Jacking up 246 . . . . . . . . . . . . . . . . . . . . . . . .
Loosening wheel nuts 245 . . . . . . . . . . . . . . .
Lowering vehicle 248 . . . . . . . . . . . . . . . . . . .
Reinstalling wheel ornament 249 . . . . . . . . .

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2003 TUNDRA from Jul. ’03 Prod. (OM 34430U)
Rear console box173,174
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Rear side windows 20
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Rear step bumper 196
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Rear view mirror
Anti −glare inside 88
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Rear view mirrors
Folding 88
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Outside 87
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Power 87
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Rear window 21
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Remote keyless entry system 14,258 . . . . . .
Reporting safety defects for U.S.
owners 320
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S
Seat adjustment precautions
Front seats 31 . . . . . . . . . . . . . . . . . . . . . . . . .
Seat belt extender 43 . . . . . . . . . . . . . . . . . . . . .
Seat belts
Cleaning 262 . . . . . . . . . . . . . . . . . . . . . . . . . .
Fastening 38 . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat belt precautions 38 . . . . . . . . . . . . . . . .
Seat belt pretensioners 45 . . . . . . . . . . . . . .
Seating capacity 208 . . . . . . . . . . . . . . . . . . . . .
Seats 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Security system 24 . . . . . . . . . . . . . . . . . . . . . . .
Service and maintenance 266 . . . . . . . . . . . . .
Service reminder indicator 104 . . . . . . . . . . . .
Side steps 197 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spare fuse 298 . . . . . . . . . . . . . . . . . . . . . . . . . .
Spare tire 241,242 . . . . . . . . . . . . . . . . . . . . . . .
Spark plugs
Twin ground electrode spark plugs 193 . . . . . . . . . . . . . . . . . . . . . . . . . . . Specifications 308
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SRS driver airbag and front passenger airbag 47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS warning light 104 . . . . . . . . . . . . . . . . . . . .
Starting
Cold weather 214 . . . . . . . . . . . . . . . . . . . . . .
Engine 214 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jump starting 235 . . . . . . . . . . . . . . . . . . . . . .
Steering
Tilt steering wheel 86 . . . . . . . . . . . . . . . . . . .
Steering column
Column lock 112 . . . . . . . . . . . . . . . . . . . . . . .
Steering switches, Audio remote control 150 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
StepSide bed 197 . . . . . . . . . . . . . . . . . . . . . . . .
Sun visors 89 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suspension and chassis 199 . . . . . . . . . . . . . .
Swing −up rear seats 36 . . . . . . . . . . . . . . . . . . .
Switch
Emergency flasher 93 . . . . . . . . . . . . . . . . . .
Headlight, dimmer and turn signal 92 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition 112 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outside rear view mirror heaters 98 . . . . . .
Overdrive 113 . . . . . . . . . . . . . . . . . . . . . . . . .
Passenger airbag manual on −off 56 . . . . . .
Windshield wiper and washer 96,97 . . . . . .
T
Tachometer 102
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Tailgate 22
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Theft prevention labels 199
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Three −way catalytic converters 190 . . . . . . . .
Tilt steering wheel 86
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Changing 239
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Checking and replacing 289
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Flat tire 239
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Inflation pressure 286,316
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Replacing wheels 294
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Rotating tires 291
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Size 202,316
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Snow tires and chains 292
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Spare 241,242
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Symbols 200
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Tire Identification Number (TIN) 201 . . . . . .
Tire related terms 205
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Tools 241,242
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To w i n g
Capacity 208
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Dinghy towing 219
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Emergency towing 254,255
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Emergency towing hook precautions 256
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If your vehicle needs to be towed 252
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Tips for towing a stuck vehicle 257 . . . . . . .
Trailer 220
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Toyota vehicle intrusion protection system 24
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Trailer towing 220
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Trip meter 103
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Turn signals 92
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TVIP 24
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Types of tires 211
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