check engine TOYOTA TUNDRA 2015 2.G Owner's Guide

4107-3. Do-it-yourself maintenance
■Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -31 F [-35 C])
Canada:
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deion-
ized water. (Minimum temperature: -44 F [-42 C])
For more details about coolant, contact your Toyota dealer.
■ If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir cap, drain cock
and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for
leaks in the cooling system.
CAUTION
■When the engine is hot
Do not remove the radiator cap.( P. 497)
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
■ When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
■ If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.

4117-3. Do-it-yourself maintenance
7
Maintenance and care
Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is ex tremely dirty or you are not sure of
their condition, have yo ur vehicle inspected by your Toyota dealer.
■Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
■Adding fluid
Make sure to check the fluid ty pe and prepare the necessary item.
■Brake fluid can absorb moisture from the air
Excess moisture in the brake fluid can cause a dangerous loss of braking effi-
ciency. Use only newly opened brake fluid.
Radiator and condenser
CAUTION
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause seri\
-
ous injuries, such as burns.
Brake fluid
Fluid type FMVSS No.116 DOT 3 or SAE J1703 brake fluid
Items Clean funnel

4357-3. Do-it-yourself maintenance
7
Maintenance and care
Checking and replacing fuses
Turn the engine switch off.
Open the fuse box cover.
Engine compartment
Push the tab in and lift the
cover off.
Under the instrument panel
Remove the cover.
Remove the fuse with the pull-
out tool.
Only type A fuse can be removed
using the pullout tool.
If any of the electrical components do not operate, a fuse may
have blown. If this happens, check and replace the fuses as nec-
essary.
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2
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4688-2. Steps to take in an emergency
*3: Driver’s seat belt buzzer:The driver’s seat belt buzzer sounds to alert the driver that his or her seat
belt is not fastened. Once the engine switch is turned to the “ON” or
“START” position mode, the buzzer sounds for 6 seconds. If the vehicle
reaches a speed of 12 mph (20 km/h), the buzzer sounds once. If the seat
belt is still unfastened after 30 seconds, the buzzer will sound intermittently
for 10 seconds. Then, if the seat belt is still unfastened, the buzzer will
sound in a different tone for 20 more seconds.
Front passenger’s seat belt buzzer:
The front passenger’s seat belt buzzer sounds to alert the front passenger
that his or her seat belt is not fastened. The buzzer sounds once if the\
vehicle reaches a speed of 12 mph (20 km/h). If the seat belt is sill unfas-
tened after 30 seconds, the buzzer will sound intermittently for 10 seconds.
Then, if the seat belt is still unfastened, the buzzer will sound in a different
tone for 20 more seconds.
■ SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front door), side impact sensors (front), side
impact sensors (rear), driver’s seat position sensor, driver’s seat belt buckle
switch, front passenger occupant cla ssification system (ECU and sensors),
“AIR BAG ON” indicator light, “AIR BAG OFF” indicator light, front passen-
ger’s seat belt buckle switch, seat belt pretensioners assemblies, airbags,
interconnecting wiring and power sources. ( P. 40)
■ Front passenger detection sensor, seat belt reminder and warning
buzzer
● If luggage is placed on the front passenger seat, the front passenger detec-
tion sensor may cause the warning light to flash and the warning buzzer to
sound even if a passenger is not sitting in the seat.
● If a cushion is placed on the seat, the sensor may not detect a passenger,
and the warning light may not operate properly.
■ If the malfunction indicator la mp comes on while driving
First check the following:
● Is the fuel tank empty?
If it is, fill the fuel tank immediately.
● Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after several trips, contact your Toyota dealer
as soon as possible.

4698-2. Steps to take in an emergency
8
When trouble arises
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Push-
ing the tire pressure warning reset switch will not turn off the tire pressure
warning light.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such
as natural air leaks and tire inflation pressure changes caused by temper-
ature. In this case, adjusting the ti re inflation pressure will turn off the
warning light (after several minutes).
■When a tire is replaced with a spare tire
The temporary spare tire is not equipped with a tire pressure warning
valve and transmitter. If a tire goes flat, the tire pressure warning light will
not turn off even though the flat tire has been replaced with the temporary
spare tire. Replace the temporary spare tire with the repaired tire and
adjust the tire inflation pressure. Th e tire pressure warning light will go off
after several minutes.
■Conditions that the tire pressure warning system may not function
properly
 P. 4 2 0
■If the tire pressure warning light frequently comes on after blinking
for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1
minute when the engine switch is turned to “ON” position, have it checked
by your Toyota dealer.
■Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an
audio sound.

4988-2. Steps to take in an emergency
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the engine to check that the radiator cooling fan operates
and to check for coolant leaks from the radiator or hoses.
If the fan is not operating:
Stop the engine immediately and contact your Toyota dealer.
If the fan is operating:
Have the vehicle in spected at the nearest Toyota dealer.
5
CAUTION
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
● If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot.
● Keep hands and clothing away from the fans, etc., while the engine is run-
ning.
● Do not loosen the radiator cap and the coolant reservoir cap while the
engine and radiator are hot.
High temperature steam or coolant could spray out.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has cooled down sufficiently. Adding
cool coolant to a hot engine too quickly can cause damage to the engine.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sand or dust,
etc.).
● Do not use any coolant additives.
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5129-1. Specifications
*: The engine oil capacity is a reference quantity to be used when changingthe engine oil. Warm up and turn off the engine, wait more than 5 minutes,
and check the oil level on the dipstick.
Lubrication system
Oil capacity
(Drain and refill - reference
*)
With filter
Without filter 7.9 qt. (7.5 L, 6.6 Imp.qt.)
7.5 qt. (7.1 L, 6.2 Imp.qt.)

5159-1. Specifications
9
Vehicle specifications
*: Your Toyota vehicle is filled with “Toyota Genuine Differential Gear Oil” atthe factory. Use Toyota approved “Toyota Genuine Differential Gear Oil” or
an equivalent oil of matching quality to satisfy the above specification.
Please contact your Toyota dealer for further details.
Electrical system
Battery
Open voltage at 68 F
(20 C):12.6  12.8 V Fully charged
12.2
 12.4 V Half charged
11 . 8
 12.0 V Discharged
(Voltage is checked 20 minutes after the engine
and all lights are turned off.)
Charging rates5 A max.
Differential
Oil
capacity
Front (4WD models) 2.2 qt. (2.05 L, 1.8 Imp.qt.)
Rear
1UR-FE engine4.9 qt. (4.60 L, 4.0 Imp.qt.)
3UR-FE
and
3UR-FBE
engines
Regular Cab
models3.8 qt. (3.60 L, 3.2 Imp.qt.)
Double Cab
models
With standard bed
3.8 qt. (3.60 L, 3.2 Imp.qt.)
With long bed
4.0 qt. (3.75 L, 3.3 Imp.qt.)
CrewMax
models
2WD models
4.0 qt. (3.75 L, 3.3 Imp.qt.)
4WD models
3.8 qt. (3.60 L, 3.2 Imp.qt.)
Oil type and viscosity*
Toyota Genuine Differential
Gear Oil LT 75W-85 GL-5 or
equivalent

562What to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your keys, new genuine keys can be made by your Toyota
dealer. (P. 98)
●Is the wireless key battery weak or depleted? ( P. 433)
●The function may not operate properly due to the condition of the radio
wave. (P. 102)
●Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is
set. Open the rear door from outside and then unlock the child-protector
lock. (P. 104)
●Is the shift lever in P? ( P. 179)
●Is the battery discharged? ( P. 494)
●Is the engine switch in the “ON” position?
If you cannot release the shift lever by depressing the brake pedal with the
engine switch in the “ON” position. ( P. 492)
If you have a problem, check the following before contacting
your Toyota dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened
If you think something is wrong The engine does not start
The shift lever cannot be shifted from P even if you depress
the brake pedal

567Alphabetical index
Power window precautions ... 136
Rear door child-protector ...... 104
Removed wireless remote control battery
precautions ......................... 434
Seat belt extender precautions ........................... 37
Seat belt precautions .............. 59
Seat heater precautions........ 351
Child-protectors....................... 104
Cleaning ........................... 392, 394
Aluminum wheels.................. 392
Exterior ................................. 392
Interior................................... 394
Seat belts .............................. 395
Clock ......................................... 375
Compass .................................. 387
Condenser ................................ 411
Console box ............................. 359
Consumption screen ................. 91
Coolant ..................................... 409 Capacity ................................ 514
Checking ............................... 409
Preparing and checking before winter....................... 240
Cooling system ........................ 409 Engine overheating ............... 497
CRS ............................................. 56
Cruise control .......................... 199
Cup holders.............................. 366
Curtain shield airbags ............... 39
Customizable features ............ 534
Daytime running light
system .................................... 190
Deck hooks .............................. 373
Defogger
Back window ................. 338, 345
Outside rear view mirrors ........................ 338, 345
Windshield .................... 338, 345
Differential ................................ 515 Dimensions .............................. 502
Dinghy towing.......................... 178
Display
Multi-information display ......... 90
Trip information....................... 91
Warning message................. 472
Do-it-yourself maintenance .... 403
Doors ........................................ 100
Automatic door locking and unlocking system......... 104
Door glasses......................... 134
Door lock .............................. 103
Open door warning light ....... 466
Open door warning message............................. 473
Outside rear view mirrors ..... 130
Rear door child-protector ...... 104
Side doors ............................ 100
Driver’s seat position
memory .................................. 116
Driving ...................................... 146 Break-in tips.......................... 147
Correct driving posture ........... 30
Driving assist system ............ 230
Procedures ........................... 146
Winter drive tips .................... 240
EDR (Event data recorder)........ 10
Emergency, in case of If the engine will not start ...... 491
If the shift lever
cannot be shifted from P .... 492
If the vehicle has discharged
battery ................................ 494
If the warning buzzer sounds................................ 465
If the warning light turns on ....................................... 465
If the warning message
is displayed ........................ 472
If you have a flat tire ............. 476
If you lose your keys ............... 98
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