2021 TOYOTA TACOMA radiator cap

4136-3. Do-it-yourself maintenance
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Maintenance and care
Engine compartment
2TR-FE engine
Washer fluid tank (P. 424)
Radiator cap
Engine coolant reservoir ( P. 417)
Engine oil filler cap ( P. 416)
Power steering fluid reservoir ( P. 420) Engine oil level dipstick
( P. 415)
Brake fluid reservoir ( P. 419)
Fuse box ( P. 448)
Battery ( P. 422)
Condenser ( P. 419)
Radiator ( P. 419)1
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4146-3. Do-it-yourself maintenance
2GR-FKS engine
Washer fluid tank (P. 424)
Power steering fluid reservoir ( P. 420)
Radiator cap
Engine oil level dipstick ( P. 415)
Engine coolant reservoir ( P. 417) Engine oil filler cap (
P. 416)
Brake fluid reservoir ( P. 419)
Fuse box ( P. 448)
Battery ( P. 422)
Condenser ( P. 419)
Radiator ( P. 419)1
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4186-3. 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-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 and engine coolant reservoir cap . (P. 528)
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.

4196-3. Do-it-yourself maintenance
6
Maintenance and care
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.
■Checking fluid level
The brake fluid level should be between the “MAX” and “MIN” lin es
on the tank.
“MAX” line
“MIN” line
■Adding fluid
Make sure to check the fluid ty pe and prepare the necessary ite m.
Type B only
Turn the engine off.
Depress the brake pedal 20 times or more.
Remove the reservoir cap.
Add newly opened brake fluid up to the “MAX” line.
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.
Brake fluid
Ty p e AType B
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Fluid type FMVSS No.116 DOT 3 or SAE J1703 brake fluid
Items Clean funnel
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5287-2. Steps to take in an emergency
If your vehicle overheats
●The needle of the engine coolant temperature gauge ( P. 9 8 )
enters the red zone or a loss of engine power is experienced. ( For
example, the vehicle speed does not increase.)
● “High Engine Coolant Temperature” is shown on the multi-informa-
tion display. (if equipped)
● 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”
“LOW”
Radiator cap
The following may indicate that your vehicle is overheating:
Correction procedures
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5297-2. Steps to take in an emergency
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When trouble arises
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 ins pected at the nearest Toyota dealer.
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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 away from the fans, etc., while the engine is run-
ning.
● 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.
NOTICE
■ When adding engine coolant
Add coolant slowly after the engine has cooled down sufficientl y. Adding
cool coolant to a hot engine too quickly can cause damage to th e engine.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sa nd or dust,
etc.).
● Do not use any coolant additives.
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602Alphabetical index
Radar cruise control (dynamic radar cruise control) ............. 265
Radiator .................................... 419
Radio
*
Rear differential lock system............................ 303
Rear seat
Adjustment precautions ........ 144
Child seats/child restraint system installation . ............... 58
Cleaning................................ 400
Folding down ........................ 142
Head restraints ..................... 145
Raising the bottom cushion ............................... 142
Rear side marker lights ........... 219
Light switch ........................... 219
Replacing light bulbs............. 459
Wattage ................................ 547
Rear step bumper .................... 130
Rear turn signal lights............. 217 Replacing light bulbs............. 459
Turn signal lever ................... 217
Wattage ................................ 547
Rear view mirror
Inside rear view mirror .......... 151
Outside rear view mirrors...... 154
Rear view monitor system
*
Refueling .................................. 232
Capacity................................ 538
Fuel types ............................. 538
Opening the fuel tank cap..... 234
Replacing Electronic key battery ........... 445
Fuses .................................... 448
Light bulbs ............................ 451
Tires...................................... 505
Wireless remote control battery ................................ 445
Reporting safety defects for U.S. owners...................... 572
Resetting the remainder light or message indicating
maintenance is required....... 404R