2003 TOYOTA TUNDRA charging

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NOTICE
Do not drive the vehicle with the oil
pressure below the normal range until
the cause is fixed—it may ruin the
engine.
The voltmeter tells whether the battery
is charged or discharged. Check it
while the engine is running—the needle
should always indicate as shown above.
If the needle reads below or above the
normal range while the engine is running,
it indicates the charging system needs im-
mediate repair.
However, it is normal for the needle to
drop below the normal range during en-
gine starting.The tachometer indicates engine speed
in thousands of rpm (revolutions per
minute). Use it while driving to select
correct shift points and to prevent en-
gine lugging and overrevving.
Driving with the engine running too fast
causes excessive engine wear and poor
fuel economy. Remember, in most cases
the slower the engine speed, the greater
the fuel economy.
NOTICE
Do not let the indicator needle get
into the red zone. This may cause
severe engine damage.
Voltmeter Tachometer

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(a) Brake System Warning Light
This light comes on in the following cases
when the ignition key is in the “ON” posi-
tion.
When the parking brake is applied...
When the brake fluid level is low...
CAUTION
It is dangerous to continue driving
normally when the brake fluid level is
low.
Have your vehicle checked at your
Toyota dealer in the following case:
The light does not come on even if the
parking brake is applied when the igni-
tion key is in the “ON” position.
CAUTION
If the light does not turn off even
after the parking brake is released
while the engine is running, immedi-
ately stop your vehicle at a safe
place and contact your Toyota dealer.
In this case, the brakes may not work
properly and your stopping distance
will become longer. Depress the brake
pedal firmly and bring the vehicle to
an immediate stop.
(b) Driver’s Seat Belt Reminder Light
and Buzzer
This light and buzzer remind you to
buckle up the driver’s seat belt.
Once the ignition key is turned to “ON” or
“START”, the reminder light flashes and
buzzer sounds if the driver ’s seat belt is
not fastened. Unless the driver fastens the
belt, the light keeps flashing and the
buzzer stops after about 4 to 8 seconds. (c) Front Passenger ’s Seat Belt Re-
minder Light
This light reminds you to buckle up the
front passenger ’s seat belt.
Once the ignition key is turned to “ON” or
“START”, the reminder light flashes if a
passenger sits in the front passenger seat
and does not fasten the seat belt. Howev-
er, if a front passenger uses an additional
seat cushion, the light may not flash even
when the seat belt is not buckled up.
If luggage or other load is placed on the
front passenger seat, depending on its
weight and how it is placed on the seat,
built −in sensors in the seat cushion may
detect the pressure, causing the reminder
light to keep flashing.
(d) Discharge Warning Light
This light warns that the battery is being
discharged.
If it comes on while you are driving, there
is a problem somewhere in the charging
system.
The engine ignition will continue to oper-
ate, however, until the battery is dis-
charged. Turn off the air conditioning,
blower, radio, etc., and drive directly to
the nearest Toyota dealer or repair shop.

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Connecting point for 5VZFE engine
Connecting point for 2UZFE engine
Do not connect the cable to or near
any part that moves when the engine
is cranked.
CAUTION
When making the connections, to
avoid serious injury, do not lean over
the battery or accidentally let the
jumper cables or clamps touch any-
thing except the correct battery termi-
nals or the ground.
5. Start your engine in the normal way.
After starting, run it at about 2000 rpm
for several minutes with the accelerator
pedal lightly depressed.
6. Carefully disconnect the cables in the exact reverse order: the negative cable
and then the positive cable.
7. Carefully dispose of the battery cover cloths—they may now contain sulfuric
acid.
8. If removed, replace all the battery vent plugs.
If the cause of your battery discharging is
not apparent (for example, lights left on),
you should have it checked at your Toyota
dealer. If your engine stalls while driving...
1. Reduce your speed gradually, keeping a straight line. Move cautiously off the
road to a safe place.
2. Turn on your emergency flashers.
3. Turn the ignition key to “ACC” or “LOCK”, and try starting the engine
again.
If the engine will not start, see “If your
vehicle will not start”.
CAUTION
If the engine is not running, the pow-
er assist for the brakes and steering
will not work, so steering and braking
will be much harder than usual.
If your engine stalls while
driving

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DOITYOURSELF MAINTENANCE
Electrical components
Checking battery condition 296
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Battery recharging precautions 298
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Checking and replacing fuses 298
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Adding washer fluid 299
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Replacing light bulbs 300
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SECTION 7 3

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During recharging, the battery is pro-
ducing hydrogen gas.
Therefore, before recharging:
1. If recharging with the battery installed on the vehicle, be sure to disconnect
the ground cable.
2. Be sure the power switch on the re- charger is off when connecting the
charger cables to the battery and when
disconnecting them.
CAUTION
Always charge the battery in an un-
confined area. Do not charge the
battery in a garage or closed room
where there is not sufficient ventila-
tion.
Only do a slow charge (5 A or
less). Charging at a quicker rate is
dangerous. The battery may ex-
plode, causing personal injuries.
NOTICE
Never recharge the battery while the
engine is running. Also, be sure all
accessories are turned off.
Ty p e A
Good Blown
Ty p e B
Ty p e C Good Blown
Good Blown
If the headlights or other electrical
components do not work, check the
fuses. If any of the fuses are blown,
they must be replaced.
See “Fuse locations” in Section 7
−1 for
locations of the fuses.
Turn the ignition switch and inoperative
component off. Pull a suspected fuse
straight out and check it.
Determine which fuse may be causing the
problem. The lid of the fuse box shows
the name of the circuit for each fuse. See
Section 8 of this manual for the functions
controlled by each circuit.
Battery recharging precautions Checking and replacing fuses

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ENGINE LUBRICATION
Oil capacity (drain and refill), L (qt., Imp.
qt.):
5VZ− FE engine
With filter 5.2 (5.5, 4.6)
Without filter 4.9 (5.2, 4.3)
2UZ− FE engine
With filter 6.2 (6.5, 5.5)
Without filter 5.7 (6.0, 5.0)
“Toyota Genuine Motor Oil” is filled in
your Toyota vehicle. Use Toyota approved
“Toyota Genuine Motor Oil” or equivalent
to satisfy the following grade and
viscosity.
Oil grade: API grade SL “Energy −Conserving” or
ILSAC multigrade engine oil Recommended oil viscosity:
SAE 5W −30
Outside temperature
Please contact your Toyota dealer for fur-
ther details.
COOLING SYSTEM
Total capacity, L (qt., Imp. qt.):
With manual transmission 10.0 (10.6, 8.8)
With automatic transmission 5VZ− FE engine 9.9 (10.5, 8.7)
2UZ− FE engine 11.6 (12.3, 10.2) Coolant type:
“Toyota Genuine Long Life Coolant” is
filled in your Toyota vehicle. In order to
avoid technical problems, we strongly
recommend using “Toyota Genuine Long
Life Coolant” or equivalent.
With ethylene− glycol type coolant for a
proper corrosion protection of aluminum
components
Do not use alcohol type antifreeze or
plain water alone.
Please contact your Toyota dealer for
further details.
BATTERY
Open voltage∗ at 20 C (68 F):
12.6—12.8 V Fully charged
12.2—12.4 V Half charged
11.8—12.0 V Discharged
∗: Voltage that is checked 20 minutes af- ter the key is removed with all the
lights turned off
Charging rates: 5 A max.

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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)
A
Access doors 14
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Adding washer fluid 299
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Adjustment
Front seats 32,33
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Seat belt 38
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Air conditioning system 158
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Airbags 47
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Aluminum wheel precautions 294
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Anti −glare inside rear view mirror 88 . . . . . . .
Anti −lock brake system warning
light 104
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Anti −theft steering column lock 112 . . . . . . . .
Appearance care
Cleaning the interior 262
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Protecting your Toyota from corrosion 260
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Washing and waxing 261
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Armrest 35
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Ashtray 166
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Audio remote controls 150
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Automatic transmission
Driving with an automatic transmission 113
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Shift pattern 113
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Shifting speed 113
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Automatic transmission fluid temperature warning light 104
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Auxiliary boxes 171
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Auxiliary catch, Engine hood 23
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B
Battery
Checking battery condition 296 . . . . . . . . . .
Gas caution 296 . . . . . . . . . . . . . . . . . . . . . . .
Handling safety 296 . . . . . . . . . . . . . . . . . . . .
Recharging precautions 297 . . . . . . . . . . . . .
Winter driving tips 218 . . . . . . . . . . . . . . . . . .
Before starting the engine 214 . . . . . . . . . . . . .
Brake pad wear limit indicators 196 . . . . . . . .
Brake system 193 . . . . . . . . . . . . . . . . . . . . . . . .
Brake system warning light 104 . . . . . . . . . . . .
Brakes
Fluid level 284 . . . . . . . . . . . . . . . . . . . . . . . . .
Pad wear limit indicators 196 . . . . . . . . . . . .
Parking 123
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Break −in tips 187
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Brightness control 94
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C
Car audio system 128
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Carbon monoxide caution 191
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Cargo and luggage
Capacity 208
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Capacity and distribution 209
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Stowage precautions 209
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Cargo lamp 95
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Cassette player 128
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Cassette tape holder 179
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Certification regulation label 197
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Checking and replacing fuses 298
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Checking brake fluid 284
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Checking the engine oil level 280
. . . . . . . . . . Checking the radiator and
condenser 284
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Child restraint
Child restraint system 57
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Installation 59,67
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Installation with child restraint lower anchorages 82,84
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Precautions 56
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Types of child restraint system 58 . . . . . . . .
Using a top strap 77,79
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Cigarette lighter 166
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Cleaning the interior 262
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Clock 166
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Clutch start cancel switch 126
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Coin holder 175,177
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Cold weather
Operation 218
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Compact disc and cassette tape holder
Cassette tape holder 177,178
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Compact disc holder 177,178
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Compact disc changer 128
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Compact disc changer controller 128 . . . . . . .
Compact disc player 128
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Condenser
Checking the condenser 284
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Console box
Rear 173,174
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Controls, Instrument panel 2,6
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Cooling system
Coolant level 282
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Engine overheating 238
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Radiator and reservoir 282
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Radiator cap 238
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Winter driving tips 218
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Corrosion prevention 260
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