2003 TOYOTA TUNDRA trailer

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2003 TUNDRA from Jul. ’03 Prod. (OM 34430U)
BREAKIN SCHEDULE
Toyota recommends that you do not
tow a trailer with a new vehicle or a
vehicle with any new power train com-
ponent (engine, transmission, differen-
tial, wheel bearings, etc.) for the first
800 km (500 miles) of driving.
MAINTENANCE
If you tow a trailer, your vehicle will
require more frequent maintenance due
to the additional load. For this informa-
tion, please refer to the scheduled
maintenance information in the “Sched-
uled Maintenance Guide” or “Owner ’s
Manual Supplement”.
Retighten all fixing bolts of the towing
ball and bracket after approximately
1000 km (600 miles) of trailer driving.
PRETOWING SAFETY CHECK
Check that your vehicle remains level
when a loaded or unloaded trailer is
hitched. Do not drive if the vehicle has
an abnormal nose −up or nose −down
condition, and check for improper
tongue load, overload, worn suspension
or other possible causes.
Make sure the trailer cargo is securely
loaded so that it cannot shift.
Check that your rear view mirrors con-
form to any applicable federal, state/
provincial or local regulations. If not,
install the rear view mirrors required
for towing purposes.
TRAILER TOWING TIPS
When towing a trailer, your vehicle will
handle differently than when not tow-
ing. The three main causes of vehicle
trailer accidents are driver error, exces-
sive speed and improper trailer loading.
Keep these in mind when towing:
Before starting out, check operation of
the lights and all vehicle −trailer connec-
tions. After driving a short distance,
stop and recheck the lights and con-
nections. Before actually towing a trail-
er, practice turning, stopping and back-
ing with a trailer in an area away from
traffic until you learn the feel.
Backing with a trailer is difficult and
requires practice. Grip the bottom of
the steering wheel and move your hand
to the left to move the trailer to the
left. Move your hand to the right to
move the trailer to the right. (This pro-
cedure is generally opposite to that
when backing without a trailer). Also,
just turn the steering wheel a little at
a time, avoiding sharp or prolonged
turning. Have someone guide you when
backing to reduce the risk of an acci-
dent.
Because stopping distance may be in-
creased, vehicle −to −vehicle distance
should be increased when towing a
trailer. For each 16 km/h (10 mph) of
speed, allow at least one vehicle and
trailer length between you and the ve-
hicle ahead. Avoid sudden braking as
you may skid, resulting in jackknifing
and loss of control. This is especially
true on wet or slippery surfaces.
Avoid jerky starts or sudden accelera-
tion. If your vehicle has a manual
transmission, prevent excessive clutch
slippage by keeping engine rpm low
and not racing the engine. Always start
out in first gear.

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Avoid jerky steering and sharp turns.
The trailer could hit your vehicle in a
tight turn. Slow down before making a
turn to avoid the necessity of sudden
braking.
Remember that when making a turn,
the trailer wheels will be closer than
the vehicle wheels to the inside of the
turn. Therefore, compensate for this by
making a larger than normal turning
radius with your vehicle.
Crosswinds and rough roads will ad-
versely affect handling of your vehicle
and trailer, causing sway. Pay attention
to the rear from time to time to pre-
pare yourself for being passed by large
trucks or buses, which may cause your
vehicle and trailer to sway. If swaying
happens, firmly grip the steering wheel
and reduce speed immediately but
gradually. Never increase speed. Steer
straight ahead. If you make no extreme
correction with the steering or brakes,
the vehicle and trailer will stabilize.
Be careful when passing other ve-
hicles. Passing requires considerable
distance. After passing a vehicle, do
not forget the length of your trailer and
be sure you have plenty of room be-
fore changing lanes.
In order to maintain engine braking effi-
ciency, do not use fifth gear (manual
transmission) or overdrive (automatic
transmission).
Because of the added load of the trail-
er, your vehicle’s engine may overheat
on hot days (at temperatures over
30C [85 F]) when going up a long or
steep grade with a trailer. If the engine
coolant temperature gauge indicates
overheating, immediately turn off the air
conditioning (if in use), pull off the road
and stop in a safe spot. Refer to “If
your vehicle overheats” in Section 4.
Always place wheel blocks under both
the vehicle and trailer wheels when
parking. Apply the parking brake firmly.
Put the transmission in “P” (automatic)
or in first or reverse (manual). Avoid
parking on a slope with a trailer, but
if it cannot be avoided, do so only
after performing the following:
1. Apply the brakes and hold.
2. Have someone place wheel blocks un- der both the vehicle and trailer wheels.
3. When the wheel blocks are in place, release your brakes slowly until the
blocks absorb the load.
4. Apply the parking brake firmly.
5. Shift into first or reverse (manual) or “P” (automatic) and turn off the engine.

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When restarting out after parking on a
slope:
1. With the transmission in “P” position (automatic) or the clutch pedal de-
pressed (manual), start the engine.
(With an automatic transmission, be
sure to keep the brake pedal de-
pressed.)
2. Shift into gear.
3. Release the parking brake (also foot brake on automatic transmission ve-
hicles) and slowly pull or back away
from the wheel blo cks. Stop and apply
your brakes.
4. Have someone retrieve the blo cks.CAUTION
Do not exceed 72 km/h (45 mph) or
the posted towing speed limit,
whichever is lower. Because insta-
bility (swaying) of a towing vehicle
trailer combination usually in-
creases as the speed increases, ex-
ceeding 72 km/h (45 mph) may
cause loss of control.
Slow down and downshift before
descending steep or long downhill
grades. Do not make sudden down-
shifts.
Avoid holding the brake pedal down
too long or too frequently. This
could cause the brakes to overheat
and result in reduced braking effi-
ciency.
Improving fuel economy is easy—just take
it easy. It will help make your vehicle last
longer, too. Here are some specific tips
on how to save money on both fuel and
repairs:
Keep your tires inflated at the cor-
rect pressure. Underinflation causes
tire wear and wastes fuel. See Section
7 −2 for instructions.
Do not carry unneeded weight in
your vehicle. Excess weight puts a
heavier load on the engine, causing
greater fuel consumption.
Avoid lengthy warmup idling. Once
the engine is running smoothly, begin
driving—but gently. Remember, howev-
er, that on cold winter days this may
take a little longer.
Always keep the automatic transmis-
sion overdrive switch turned on.
Driving with the overdrive switch off
will reduce the fuel economy. (For de-
tails, see “Automatic transmission” in
Section 1 −6.)
Accelerate slowly and smoothly.
Avoid jackrabbit starts. Get into high
gear as quickly as possible.
How to save fuel and make
your vehicle last longer

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kg (lb.)
Standard cab models
5VZ −FE engineTw o −wheel drive models2358 (5200)
Four −wheel drive models2268 (5000)
2UZ −FE engine
Tw o −wheel drive modelsWithout towing package2494 (5500)
With towing package3311 (7300)
Four −wheel drive modelsWithout towing package2450 (5600)
With towing package3357 (7400)
Access cab models
5VZ −FE engineTw o −wheel drive models2268 (5000)
Four −wheel drive models2268 (5000)
2UZ −FE engine
Tw o −wheel drive modelsWithout towing package2494 (5500)
With towing package3311 (7300)
Four −wheel drive modelsWithout towing package2404 (5300)
With towing package3221 (7100)
∗: Trailer weight + car go weight
Towing capacity∗

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Engine compartment (5VZFE engine)
Instrument panel
Fuses (type A)
1. MIR HTR 15 A: Outside rear view mir-
ror heaters
2. FOG 15 A: Front fog lights
3. TOW BRK 30 A: Trailer brake control-
ler
4. SUB BATT 30 A: Trailer sub battery
5. TOW TAIL 30 A: Trailer lights (tail
lights)
6. PWR OUTLET 1 15 A: Power outlet
7. ECUB 5 A: Anti−lock brake system
8. HLP RH 10 A: Right−hand headlight
(high beam) 9. PWR OUTLET 2 15 A:
Power outlet
10. DOME 10 A: Interior light, personal
lights, vanity light, ignition switch light,
step light, door courtesy lights, open
door warning light
11. HLP LH 10 A : Left−hand headlight
(high beam)
12. EFI NO.2 10 A: Multiport fuel injection
system/s equential multiport fuel injec-
tion system, emission control system
13. RADIO 20 A: Audio system
14. HEAD RL 10 A (with daytime running light system): Right−hand headlight
(low beam)
15. A/C 10 A: Air conditioning system
16. HEAD LL 10 A (with daytime running light system): Left−hand headlight (low
beam)
17. ALTS 7.5 A: Charging system
18. ETCS 10 A (2UZFE engine): Multiport
fuel injection system/sequential multi-
port fuel injection system, electronic
throttle control system
19. HAZ 15 A: Emergency flashers
20. EFI NO.1 20 A: Multiport fuel injection
system/s equential multiport fuel injec-
tion system, fuel pump, “EFI NO.2”
fuse

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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
. . . . . . . . . . . . . . . . . . . . . . .
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
. . . . . . . . . . . . . .
Replacing wheels 294
. . . . . . . . . . . . . . . . . .
Rotating tires 291
. . . . . . . . . . . . . . . . . . . . . .
Size 202,316
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Snow tires and chains 292
. . . . . . . . . . . . . .
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
. . . . . . . . . . . . .
Emergency towing hook precautions 256
. . . . . . . . . . . . . . . . . . . . . .
If your vehicle needs to be towed 252
. . . . . . . . . . . . . . . . . . . . . . . . . . .
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
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn signals 92
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TVIP 24
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Types of tires 211
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