2021 TOYOTA TUNDRA fuel

5518-1. Specifications
8
Vehicle specifications
Fuel information
■Gasoline quality
In very few cases, driveability problems may be caused by the b rand of gaso-
line you are using. If driveability problems persist, try changing the brand of
gasoline. If this does not correct the problem, consult your To yota dealer.
■ Recommendation of the use of gaso line containing detergent additives
● Toyota recommends the use of gasoline that contains detergent a dditives to
avoid build-up of engine deposits.
● All gasoline sold in the U.S.A. contains minimum detergent addi tives to
clean and/or keep clean intake systems, per EPA’s lowest additi ves concen-
tration program.
● Toyota strongly recommends the use of Top Tier Detergent Gasoli ne. For
more information on Top Tier Detergent Gasoline and a list of m arketers,
please go to the official website www.toptiergas.com.
■ Recommendation of the use of low emissions gasoline
Gasolines containing oxygenates such as ethers and ethanol, as well as
reformulated gasolines, are available in some cities. These fue ls are typically
acceptable for use, providing they meet other fuel requirements .
Toyota recommends these fuels, since the formulations allow for reduced
vehicle emissions.
You must only use unleaded gasoline.
Select octane rating 87 (Research Octane Number 91) or higher.
Use of unleaded gasoline with an octane rating lower than 87
may result in engine knocking. Persistent knocking can lead to
engine damage.
At minimum, the gasoline you use should meet the specifications of
ASTM D4814 in the U.S.A.

5528-1. Specifications
■Non-recommendation of the use of blended gasoline
●If you use gasohol in your vehicle, be sure that it has an octa ne rating no
lower than 87.
● Toyota does not recommend the use of gasoline containing methan ol.
■ Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT (Methylcy-
clopentadienyl Manganese Tricarbonyl).
Toyota does not recommend the use of gasoline that contains MMT. If fuel
containing MMT is used, your emission control system may be adv ersely
affected.
The malfunction indicator lamp on the instrument cluster may come on. If this
happens, contact your Toyota dealer for service.
■ If your engine knocks
●Consult your Toyota dealer.
● You may occasionally notice light knocking for a short time whi le accelerat-
ing or driving uphill. This is normal and there is no need for concern.
●
Use only gasoline containing up to 15%
ethanol.
DO NOT use any flex-fuel or gasoline
that could contain more than 15% etha-
nol, including from any pump labeled
E30, E50, E85 (which are only some
examples of fuel containing more than
15% ethanol).
DO NOT use gasoline contain-
ing more than 15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)

5538-1. Specifications
8
Vehicle specifications
NOTICE
■Notice on fuel quality
● Do not use improper fuels. If improper fuels are used, the engi ne will be
damaged.
● Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way ca talytic
converters causing the emission control system to malfunction.
● Do not use gasohol other than the type previously stated.
Other gasohol may cause fuel system damage or vehicle performan ce
problems.
● Using unleaded gasoline with an octane number or rating lower than the
level previously stated will cause persistent heavy knocking.
At worst, this will lead to engine damage.
■ Fuel-related poor driveability
If poor driveability (poor hot starting, vaporization, engine k nocking, etc.) is
encountered after using a different type of fuel, discontinue the use of that
type of fuel.
■ When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle’s paint.

5598-1. Specifications
8
Vehicle specifications
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure
Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressureThe maximum cold inflated pressure to which
a tire may be inflated, shown on the sidewall
of the tire
Recommended infla-
tion pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of auto-
matic transmission, power steering, power
brakes, power windows, power seats, radio
and heater, to the extent that these items are
available as factory-installed equipment
(whether installed or not)
Curb weight
The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded vehi-
cle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
*
that follows
Occupant distributionDistribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below
Production options
weight
The combined weight of installed regular pro-
duction options weighing over 5 lb. (2.3 kg) in
excess of the standard items which they
replace, not previously considered in curb
weight or accessory weight, including heavy
duty brakes, ride levelers, roof rack, heavy
duty battery, and special trim

5668-2. Customization
■Gauges, meters and multi-information display (P. 105, 110)
*1: For details about each function: P. 1 1 2
*2: The default setting varies according to country.
*3: Some status screens cannot be registered (indicated on multi-i nformation
display).
*4: Following items: current fuel e conomy (bar type), average fuel economy
(total average, trip average or tank average), average speed (a verage
speed or trip average speed), elapsed time (total time or trip time), dis-
tance (range or trip distance), other (blank).
Function*1Default settingCustomized setting
Language*2English FrenchOOOSpanish
Units
*2miles
(MPG USA) miles
(MPG
Imperial)OOO
km (km/L)
km (L/100 km)
Switch settings Drive
information 1 Desired status
screen
*3O—O
Drive information 1 Average Fuel
Economy*4O—OCurrent Fuel Economy
Drive information 2 Distance after
Start
*4O—OTravel Time after Start
Pop-up display ON OFF
O—O
Color BlueGreenO—OOrange
Ye l l o w
123

602Alphabetical index
Engine coolant ......................... 418Capacity ................................ 545
Checking ............................... 418
Preparing and checking before winter....................... 331
Engine coolant temperature gauge...................................... 105
Engine immobilizer system ...... 85
Engine oil ................................. 416 Capacity ................................ 543
Checking ............................... 416
Preparing and checking before winter....................... 331
Engine oil maintenance data ......................................... 407
Engine switch
(ignition switch)..................... 217
Engine switch light (ignition switch light) ............ 357
Event data recorder (EDR) ........ 11 Flat tire ..................................... 506
Floor mats .................................. 30
Fluid
Automatic transmission ........ 546
Brake .................................... 547
Washer ................................. 425
Fog lights ................................. 244
Replacing light bulbs ............ 466
Switch ................................... 244
Wattage ................................ 550
Foot well light .......................... 357
Four-wheel drive system ........ 315
Front passenger occupant classification system .............. 53
Front personal lights............... 358
Front seats ............................... 147 Adjustment............................ 147
Cleaning ............................... 403
Correct driving posture ........... 32
Driving position memory ....... 152
Head restraints ..................... 157
Power easy access system .......... ...................... 152
Seat heaters ......................... 354
Seat position memory ........... 152
Seat ventilators ..................... 354
Front side marker lights Light switch ........................... 234
Replacing light bulbs ............ 464
Wattage ................................ 550
Front turn signal lights
Replacing light bulbs ............ 463
Turn signal lever ................... 232
Wattage ................................ 550
Fuel ........................................... 542 Capacity................................ 542
Fuel gauge............................ 105
Fuel pump shut off system ... 484
Gas station information......... 612
Information............................ 551
Refueling .............................. 248
Type.............................. 248, 542F

603Alphabetical index
Warning light ......................... 486
Warning message ................. 495
Fuel consumption
Average fuel consumption ....................... 117
Current fuel consumption...... 117
Fuel filler door.......................... 250
Fuel pump shut off system ..... 484
Fuses ........................................ 454
Garage door opener ................ 385
Gas station information .......... 612
Gauges ..................................... 105
Glove box ................................. 362
Hands-free system (for cellular phone)
*
Head restraints ........................ 157
Headlights ................................ 234 Automatic High Beam ........... 239
Light switch ........................... 234
Replacing light bulbs............. 459
Wattage ................................ 550
Heaters Automatic air conditioning system ......... ....................... 347
Manual air conditioning system ......... ....................... 340
Outside rear view
mirrors ........................ 342, 349
Seat heaters ......................... 354 High mounted stoplight
Replacing.............................. 470
Wattage ................................ 550
Hood ......................................... 414
Hooks Deck hooks ........................... 377
Retaining hooks (floor mat) .... 30
Horn .......................................... 162
I/M test ...................................... 411
Identification Engine .................................. 541
Tire ....................................... 555
Vehicle .................................. 541
Ignition switch
(engine switch) ...................... 217
Ignition switch light (engine switch light) ............. 357
Illuminated entry system ........ 359
Immobilizer system ................... 85
Indicators ................................. 102
Initialization Maintenance ......................... 407
Moon roof ............................. 181
Tire pressure warning system .... .............. 428
Inside rear view mirror ............ 164
Instrument panel light
control .................................... 107
Interior lights ........................... 357
Personal lights ...................... 358
Switches ............................... 357
Wattage ................................ 550
Intuitive parking assist ........... 298 Function ................................ 298
Warning message......... 494, 495
G
H
I
*: Refer to “NAVIGATION AND MULTIMEDIA SYSTEM OWNER
’S MANUAL”.

606Alphabetical index
Parking assist sensors (intuitive parking assist) ....... 298
Parking brake ........................... 233 Operation .............................. 233
Parking brake engaged
warning buzzer ................... 485
Parking brake engaged
warning message ............... 495
Parking lights ........................... 234 Light switch ........................... 234
Replacing light bulbs..... 463, 470
Wattage ................................ 550
PCS
(Pre-Collision System) .......... 260 Pre-collision brake assist ...... 261
Pre-collision braking ............. 261
PCS warning ......................... 261
Warning light ......................... 488
Warning message ................. 493
Pen holder ................................ 367
Personal lights ......................... 358 Light switch ........................... 357
Wattage ................................ 550
Power back window ................ 176
Power easy access system .... 152
Power outlets ........................... 379
Power steering fluid ................ 421
Power windows........................ 172 Jam protection function......... 173
Operation .............................. 172
Window lock switch............... 172
Pre-Collision System (PCS) ...................................... 260 Radar cruise control
(dynamic radar
cruise control) ....................... 280
Radiator .................................... 420
Radio
*
Rear personal lights ................ 358
Rear seat
Adjustment precautions ........ 151
Child seats/child restraint system installation . ............... 63
Cleaning ............................... 403
Head restraints ..................... 157
Raising the bottom cushion ............................... 150
Rear side marker lights........... 234 Light switch ........................... 234
Replacing light bulbs ............ 468
Wattage ................................ 550
Rear step bumper .................... 137
Rear turn signal lights ............ 232
Replacing light bulbs ............ 468
Turn signal lever ................... 232
Wattage ................................ 550
Rear view mirror Inside rear view mirror .......... 164
Outside rear view mirrors ..... 167
Rear view monitor system
*
Refueling .................................. 248 Capacity................................ 542
Fuel types ............................. 542
Opening the fuel tank cap..... 250
Replacing Fuses .................................... 454
Light bulbs ............................ 457
Tires...................................... 506
Wireless remote control battery ................................ 451
Reporting safety defects for U.S. owners...................... 576
Resetting the message
indicating maintenance
is required.............................. 407
PR