2020 TOYOTA TUNDRA water pump

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6-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 400
Cleaning and protecting the vehicle interior ........... 403
6-2. Maintenance Maintenance requirements ................... 406
General maintenance ........ 408
Emission inspection and maintenance (I/M)
programs ......................... 411
6-3. Do-it-yourself maintenance Do-it-yourself service precautions ..................... 412
Hood.................................. 414
Engine compartment ......... 415
Tires .................................. 426
Tire inflation pressure........ 440
Wheels .............................. 443
Air conditioning filter .......... 446
Wireless remote control/ electronic key battery ...... 449
Checking and replacing fuses ............................... 452
Light bulbs ......................... 455 7-1. Essential information
Emergency flashers ........... 472
If your vehicle has to be stopped in
an emergency.................. 473
If the vehicle is trapped in rising water .................. 475
7-2. Steps to take in an emergency
If your vehicle needs to be towed .......................... 476
If you think something is wrong............................... 481
Fuel pump shut off system ............................. 482
If a warning light turns on or a warning buzzer
sounds ............................. 483
If a warning message is displayed ......................... 491
If you have a flat tire .......... 504
If the engine will not start ................................. 519
If the electronic key does not operate properly
(vehicles with a smart
key system) .................... 521
If the vehicle battery is discharged ....................... 523
If your vehicle overheats.... 527
If the vehicle becomes stuck ................................ 530
6Maintenance and care7When trouble arises

1914-1. Before driving
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Driving
NOTICE
■When driving the vehicle
● Do not depress the accelerator and brake pedals at the same tim e during
driving, as this may restrain the engine output.
● Do not use the accelerator pedal or depress the accelerator and brake
pedals at the same time to hold the vehicle on a hill.
■ When parking the vehicle
Always set the parking brake, and shift the shift lever to P. F ailure to do so
may cause the vehicle to move or the vehicle may move suddenly if the
accelerator pedal is accidentally depressed.
■ Avoiding damage to vehicle parts
● Do not turn the steering wheel fully in either direction and ho ld it there for
an extended period of time.
Doing so may damage the power steering pump.
● When driving over bumps in the road, drive as slowly as possibl e to avoid
damaging the wheels, underside of the vehicle, etc.
■ If you get a flat tire while driving
A flat or damaged tire may cause the following situations. Hold the steering
wheel firmly and gradually depress the brake pedal to slow down the vehi-
cle.
● It may be difficult to control your vehicle.
● The vehicle will make abnormal sounds or vibrations.
● The vehicle will lean abnormally.
Information on what to do in case of a flat tire ( P. 504)
■ When encountering flooded roads
Do not drive on a road that has flooded after heavy rain, etc. Doing so may
cause the following serious damage to the vehicle:
● Engine stalling
● Short in electrical components
● Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle i s flooded, be
sure to have your Toyota dealer check the following:
● Brake function
● Changes in quantity and quality of oil and fluid used for the engine, trans-
mission, transfer (4WD models) differentials, etc.
● Lubricant condition for the propeller shaft, bearings and suspe nsion joints
(where possible), and the function of all joints, bearings, etc .

4196-3. Do-it-yourself maintenance
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Maintenance and care
■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-bora te 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 ca p, 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.
WARNING
■ When the engine is hot
Do not remove the radiator cap.( P. 529)
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 cor rect 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 p arts or paint.

4256-3. Do-it-yourself maintenance
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Maintenance and care
Add washer fluid in the following
situations:
●A washer does not work.
● The warning message appears
on the display.
Washer fluid
WARNING
■When adding washer fluid
Do not add washer fluid when the engine is hot or running as wa sher fluid
contains alcohol and may catch fire if spilled on the engine, e tc.
NOTICE
■Do not use any fluid ot her than washer fluid
Do not use soapy water or engine antifreeze instead of washer f luid.
Doing so may cause streaking on the vehicle’s painted surfaces, as well as
damaging the pump leading to problems of the washer fluid not s praying.
■ Diluting washer fluid
Dilute washer fluid with water as necessary.
Refer to the freezing temperatures listed on the label of the washer fluid bot-
tle.

471
7When trouble arises
7-1. Essential informationEmergency flashers .......... 472
If your vehicle has to be stopped in
an emergency ................. 473
If the vehicle is trapped in rising water .................. 475 7-2. Steps to take in an emergency
If your vehicle needs to be towed ......................... 476
If you think something is wrong .............................. 481
Fuel pump shut off system ............................ 482
If a warning light turns on or a warning buzzer
sounds ............................ 483
If a warning message is displayed......................... 491
If you have a flat tire.......... 504
If the engine will not start ................................. 519
If the electronic key does not operate
properly (vehicles with
a smart key system) ........ 521
If the vehicle battery is discharged ...................... 523
If your vehicle overheats ... 527
If the vehicle becomes stuck ............................... 530