2012 TOYOTA TUNDRA fuel

567
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Tire inflation pressure check interval
You should check tire pressure every two weeks, or at least once a
month.
Do not forget to check the spare.
■Effects of incorrect tire inflation pressure
Driving with incorrect ti
re inflation pressure ma y result in the following:
●Reduced fuel efficiency
●Reduced driving comfort and tire life
●Reduced safety
●Damage to the drive train
If a tire needs frequent re filling, have it checked by your Toyota dealer.
■Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:
●Check only when the tires are cold.
If your vehicle has been parked for at least 3 hours and has not been
driven for more than 1 mile or 1.5 km, you will get an accurate cold
tire inflation pressure reading.
●Always use a tire pressure gauge.
The appearance of the tire can be mi sleading. In addition, tire infla-
tion pressures that are even just a few pounds off can degrade ride
and handling.
●Do not bleed or reduce tire inflation pressure after driving. It is normal
for the tire inflation pressure to be higher after driving.
●Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle
is balanced.

580 4-3. Do-it-yourself maintenance
Fuse layout and amperage ratings■ Engine compartment
FuseAmpereCircuit
1 A/F 15 A Multiport fuel injection system/
sequential multiport fuel injection
system
2 HORN 10 A Horn
3 EFI NO.1 25 A Multiport fuel injection system/
sequential multiport fuel injection
system
4 IG2 MAIN 30 A INJ, MET, IGN fuses
5 DEICER 20 A Front windshield wiper de-icer
6 TOW TAIL 30 A Trailer lights (tail lights)
7 POWER NO.4 25 A Power windows
8 POWER NO.2 30 A Power back windows
9 FOG 15 A Front fog lights

581
4-3. Do-it-yourself maintenance
4
Maintenance and care
10 STOP
15 AStop lights, high mounted stop-
light, vehicle stability control sys-
tem, anti-lock brake system, shift
lock system, multiport fuel injection
system/sequential multiport fuel
injection system, towing converter
11 TOW BRK 30 A Trailer brake controller
12 IMB 7.5 AMultiport fuel injection system/
sequential multiport fuel injection
system
13 AM2 7.5 A Starting system
14 TOWING 30 A Towing converter
15 AI PMP HTR 10 A Air injection system
16 ALT-S 5 A Charging system
17 TURN-HAZ 15 A Turn signal lights, emergency
flashers, towing converter
18 F/PMP 25 A Fuel system
19 ETCS 10 AMultiport fuel injection system/
sequential multiport fuel injection
system, electric throttle control sys-
tem
20 MET-B 5 A Gauges and meters
21 AMP 30 AAudio system, rear view monitor,
navigation system, rear seat enter-
tainment system
22 RAD NO.1 15 A Audio system, rear view monitor,
navigation system, rear seat enter-
tainment system
FuseAmpereCircuit

582 4-3. Do-it-yourself maintenance
23 ECU-B17.5 AMultiplex communication system,
Multiport fuel injection system/
sequential multiport fuel injection
system, auto anti-glare inside rear
view mirror, power outlets, power
front driver’s seat, power tilt and
power telescopic
24 DOME 7.5 AInterior lights, personal lights, van-
ity lights, engine switch light, foot
light, accessory meter
25 HEAD LH 15 ALeft-hand headlight
(high beam)
26 HEAD LL 15 ALeft-hand headlight
(low beam)
27 INJ 10 AMultiport fuel injection system/
sequential multiport fuel injection
system, ignition system
28 MET 7.5 A Gauges and meters
29 IGN 10 ASRS airbag system, multiport fuel
injection system/sequential multi-
port fuel injection system, cruise
control system
30 HEAD RH 15 ARight-hand headlight
(high beam)
31 HEAD RL 15 ARight-hand headlight
(low beam)
32 EFI NO.2 10 AMultiport fuel injection system/
sequential multiport fuel injection
system, leak detection pump
33 DEF I/UP 5 A No circuit
34 SPARE 5 A Spare fuse
35 SPARE 15 A Spare fuse
36 SPARE 30 A Spare fuse
FuseAmpereCircuit

583
4-3. Do-it-yourself maintenance
4
Maintenance and care
*: Replace the fuse with one of the same ampere rating as the original.
37 DEFOG 40 A Back window defogger
38 SUB BATT 40 A Trailer towing
39 ABS1 50 A
Anti-lock brake system, vehicle sta-
bility control system
40 ABS2 40 A Anti-lock brake system, vehicle sta-
bility control system
41 ST 30 A Starting system
42 HTR 50 A Air conditioning system
43 LH-J/B 150 A AM1, TAIL, PANEL, ACC, CIG, LH-
IG, 4WD, ECU-IG No.1, BK/UP LP,
SEAT-HTR, A/C IG, ECU-IG No.2,
WSH, WIPER, OBD, A/C, TI&TE,
FR P/SEAT RH, MIR, DR/LCK, FR
P/SEAT LH, CARGO LP, PWR
OUTLET, POWER No.1 fuses
44 ALT 180 A
*LH-J/B, HTR, SUB BATT, TOW
BRK, STOP, FOG, TOW TAIL,
DEICER fuses
140 A
*
45 A/PUMP NO.1 50 A Multiport fuel injection system/
sequential multiport fuel injection
system
46 A/PUMP NO.2 50 A Multiport fuel injection system/
sequential multiport fuel injection
system
47 MAIN 40 A HEAD LL, HEAD RL,
HEAD LH, HEAD RH fuses
FuseAmpereCircuit

When trouble arises5
599
5-1. Essential informationEmergency flashers ......... 600
If your vehicle needs to be towed ........................ 601
If you think something is wrong ............................. 607
Fuel pump shut off system ........................... 608
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds... ........................ 609
If a warning message is displayed (vehicles
with multi-information
display) .......................... 619
If you have a flat tire......... 623
If the engine will not start ................................ 641
If the shift lever cannot be shifted from P............ 643
If you lose your keys ........ 646
If the vehicle battery is discharged ..................... 647
If your vehicle overheats ....................... 651
If the vehicle becomes stuck .............................. 654
If your vehicle has to be stopped in
an emergency ................ 655

608
5-1. Essential information
Fuel pump shut off system
Follow the procedure below to restart the engine after the system is
activated.Turn the engine switch to the ACC or LOCK position.
Restart the engine.
NOTICE
■Before starting the engine
Inspect the ground under the vehicle.
If you find that fuel has leaked onto the ground, the fuel system has been
damaged and is in need of repair. Do not restart the engine.
To minimize the risk of fuel leakage when the engine stalls or an air-
bag inflates upon collision, the fuel pump shut off system stops sup-
plying fuel to the engine.

612 5-2. Steps to take in an emergency
(On the center panel)Front passenger’s seat
belt reminder light
(warning buzzer)
*3
Warns the right front pas-
senger to fasten his/her
seat belt.
Fasten the seat belt.
Tire pressure warning
light
When the light comes on:
Low tire inflation pres-
sure such as
• Natural causes
( P. 615)
• Flat tire ( P. 623) Adjust the tire inflation
pressure to the speci-
fied level.
The light will turn off
after a few minutes.
In case the light
does not turn off
even if the tire infla-
tion pressure is
adjusted, have the
system checked by
your Toyota dealer.
When the light comes on
after blinking for 1
minute:
Malfunction in the tire
pressure warning sys-
tem ( P. 616) Have the system
checked by your Toy-
ota dealer.
Low fuel level warning
light
Low level of fuel. Refuel the vehicle.
*4Low washer fluid warn-
ing light
Low level of washer fluid. Fill the tank.
Warning lightWarning light/DetailsCorrection procedure