radiator TOYOTA SEQUOIA 2021 Owners Manual (in English)

4076-2. Maintenance
6
Maintenance and care
SEQUOIA_OM_USA_OM0C035U
General maintenance
Listed below are the general maintenance items that should be
performed at the intervals specified in the “Owner’s Warranty
Information Booklet” or “Own er’s Manual Supplement/Sched-
uled Maintenance Guide”. It is recommended that any problem
you notice should be brought to the attention of your Toyota
dealer or qualified s ervice shop for advice.
Engine compartment
ItemsCheck points
BatteryCheck the connections. (P. 423)
Brake fluidIs the brake fluid at the correct level? ( P. 421)
Engine coolantIs the engine coolant at the correct level? (P. 419)
Engine oilIs the engine oil at the correct level? (P. 416)
Exhaust systemThere should not be any fumes or strange sounds.
Power steering fluidIs the power steering fluid at the correct level?
(P. 422)
Radiator/condenserThe radiator and condenser should be free from
foreign objects. ( P. 420)
Washer fluidIs there sufficient washer fluid? (P. 425)

4126-3. Do-it-yourself maintenance
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ItemsParts and tools
Fuses (P. 448)• Fuse with same amperage rating as original
Light bulbs
( P. 4 5 1 )
• Bulb with same number and wattage rating as origi-
nal
• Phillips-head screwdriver
• Flathead screwdriver• Wrench
Power steering
fluid level
( P. 4 2 2 )• Automatic transmission fluid DEXRON® II or III
• Rag or paper towel
• Funnel (used only for adding power steering fluid)
Radiator and
condenser
( P. 4 2 0 )

Tire inflation
pressure
( P. 438)• Tire pressure gauge
• Compressed air source
Washer fluid
( P. 4 2 5 )• Water or washer fluid containing antifreeze (for win-
ter use)
• Funnel (used only for adding water or washer fluid)

4136-3. Do-it-yourself maintenance
6
Maintenance and care
SEQUOIA_OM_USA_OM0C035U
WARNING
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions.
■When working on the engine compartment
● Keep hands, clothing and tools away from the moving fan and eng ine
drive belt.
● Be careful not to touch the engine, radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil and other fluids may also be hot.
● Do not leave anything that may burn easily, such as paper and r ags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel or t he bat-
tery. Fuel and battery fumes are flammable.
● Be extremely cautious when working on the battery. It contains poisonous
and corrosive sulfuric acid.
■ When working near the electric cooling fan or radiator grille
Be sure the engine switch is off. With the engine switch on, the electric cool-
ing fans may automatically start to run if the air conditioning is on and/or the
coolant temperature is high. ( P. 420)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air.

4156-3. Do-it-yourself maintenance
6
Maintenance and care
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Engine compartment
Washer fluid tank (P. 425)
Engine oil level dipstick ( P. 416)
Engine coolant reservoir ( P. 419)
Engine oil filler cap ( P. 417)
Brake fluid reservoir ( P. 421) Fuse box (
P. 448)
Battery ( P. 423)
Radiator ( P. 420)
Cooling fans
Condenser ( P. 420)
Power steering fluid reservoir ( P. 422)

4196-3. Do-it-yourself maintenance
6
Maintenance and care
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The coolant level is satisfactory if it is between the “FULL” a nd “LOW”
lines on the reservoir wh en the engine is cold.
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line.
■ 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 engine coolant, contact your Toyota deal er.
■ If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir ca ps, 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.
Engine coolant

4206-3. Do-it-yourself maintenance
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Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is extremely dirty or you are not sure of
their condition, have your vehic le inspected by your Toyota dea ler.
WARNING
■When the engine is hot
Do not remove the engine coolant reservoir cap or the radiator cap.
(P. 514)
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.
Radiator and condenser
WARNING
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and c ause seri-
ous injuries, such as burns.

5137-2. Steps to take in an emergency
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7
When trouble arises
If your vehicle overheats
●The needle of the engine coolant temperature gauge ( P. 9 4 )
enters the red zone o r a loss of engine power is experienced.
(For example, the vehicle speed does not increase.)
● Steam comes out f rom under the hood.
Stop the vehicle in a safe place and turn off the air condition ing sys-
tem, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled
down sufficiently, inspect the
hoses and radiator core (radia-
tor) for any leaks. Radiator
Cooling fan
If a large amount of coolant
leaks, immediately contact your
Toyota dealer.
The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir.Reservoir
“FULL” line
“LOW” line
Radiator cap
The following may indicate that your vehicle is overheating:
Correction procedures
1
2
3
4

5147-2. Steps to take in an emergency
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Add engine coolant if neces-
sary.
Water can be used in an emer-
gency if engine coolant is unavail-
able.
Start the engine to check that the radiator cooling fan operate and
to check for coolant leaks from the radiator or hoses.
If the fan are not operating:
Stop the engine immediately and contact your Toyota dealer.
If the fan are operating:
Have the vehicle ins pected at the nearest Toyota dealer.
5
WARNING
■When inspecting under th e 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 ho od until
the steam has subsided. The engine compartment may be very hot.
● Keep hands and clothing (especially a tie, a scarf or a muffler ) away from
the fans and belts.
● Do not loosen the radiator cap and the coolant reservoir cap wh ile the
engine and radiator are hot.
High temperature steam or coolant could spray out.
6
7

583Alphabetical index
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Radiator .................................... 420
Radio
*
RCTA (Rear Cross Traffic Alert) ....................................... 296
Rear air conditioning system .................................... 348
Rear console box..................... 363
Rear seats
Adjustment ............................ 138
Folding down ................ 141, 144
Rear side sunshade................. 383
Rear step bumper .................... 121
Rear turn signal lights............. 225 Replacing light bulbs............. 452
Turn signal lever ................... 225
Wattage ................................ 530
Rear view mirror Inside rear view mirror .......... 158
Outside rear view mirrors...... 161
Rear view monitor system
*
Rear window ............................ 168
Rear window defoggers .......... 343
Rear window wiper .................. 241
Refueling .................................. 244 Capacity ................................ 523
Fuel types ............................. 523
Opening the fuel tank cap ..... 246
Replacing Fuses .................................... 448
Key battery............................ 446
Light bulbs ............................ 451
Tires ...................................... 491
Reporting safety defects for U.S. owners ...................... 560
Resetting the message
indicating maintenance
is required .............................. 406
Roof luggage carrier ............... 187 Safety Connect .......................... 76
Seat belt reminder light .......... 472
Seat belts ................................... 30
Adjusting the seat belt ............ 33
Automatic Locking
Retractor (ALR) .................... 34
Child restra int system
installation ............................ 62
Cleaning and maintaining the seat belt........................ 403
Comfort guide ......................... 35
Emergency Locking Retractor (ELR) .................... 34
How to wear your seat belt ..... 30
How your child should wear the seat belt.......................... 34
Pregnant women, proper seat belt use ......................... 36
Reminder light and buzzer.... 472
Seat belt extender .................. 34
Seat belt pretensioners........... 33
SRS warning light ................. 470
Seat heaters ............................. 352
Seat position memory ............. 149
Seat ventilators........................ 352
Seating capacity ...................... 193
RS
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.