2019 TOYOTA HILUX radiator cap

5397-3. Do-it-yourself maintenance
HILUX_OM_OM0K375E_(EE)
7
Maintenance and care
Engine compartment
Gasoline engine
Engine coolant reservoir
( P. 544)
Engine oil level dipstick
( P. 541)
Engine oil filler cap ( P. 542)
Fuse box ( P. 570)
Battery ( P. 546)
Washer fluid tank ( P. 550)
Condenser ( P. 545)
Radiator ( P. 545)
1
2
3
4
5
6
7
8

5407-3. Do-it-yourself maintenance
HILUX_OM_OM0K375E_(EE)
Diesel engine
Battery (if equipped)
( P. 546)
Engine coolant reservoir
( P. 544)
Engine oil filler cap ( P. 542)
Engine oil level dipstick
( P. 541)
AdBlue™ tank cap
(if equipped) ( P. 553)
Fuel filter ( P. 551, 648)
Fuse box ( P. 570)
Battery ( P. 546)
Washer fluid tank ( P. 550)
Intercooler ( P. 545)
Radiator ( P. 545)
Condenser (if equipped)
( P. 545)
1
2
3
4
5
6
7
8
9
10
11
12

5447-3. Do-it-yourself maintenance
HILUX_OM_OM0K375E_(EE)
The coolant level is satisfactory if it is between the “F” and “L” lines on
the reservoir when the engine is cold.
If the level is on or below the “L” line, add coolant up to the “F” line.
( P. 645)
■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.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -35 C [-31F])
For more details about engine coolant, contact any authorized Toyota retailer
or Toyota authorized repairer, or any reliable repairer.
■ 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 any authorized Toyota retailer
or Toyota authorized repairer, or any reliable repairer test the cap and check
for leaks in the cooling system.
Engine coolant
Gasoline engineDiesel engine
Reservoir cap
“F” line
“L” line1
2
3

5457-3. Do-it-yourself maintenance
HILUX_OM_OM0K375E_(EE)
7
Maintenance and care
Check the radiator, condenser and intercooler and clear away any for-
eign objects. If any of the above parts is extremely dirty or you are not
sure of their condition, have your vehicle inspected by any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer.
WARNING
■ When the engine is hot
Do not remove the radiator cap or the engine coolant reservoir cap.
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.
■ Notice on coolant quality
Do not use improper coolant. If improper coolant is used, the engine cooling
system may be damaged.
Radiator, condenser and intercooler (if equipped)
WARNING
■ When the engine is hot
Do not touch the radiator, condenser or intercooler as they may be hot and
cause serious injuries, such as burns.

6468-2. Steps to take in an emergency
HILUX_OM_OM0K375E_(EE)
The coolant level is satisfactory if it is between the “F” and “L” lines
on the reservoir.
Reservoir
“F” line
“L” line
Radiator cap (if equipped)
Add engine coolant if necessary. ( P. 671)
Water can be used in an emergency if engine coolant is unavailable.
4
1
2
3
4
Gasoline engineDiesel engine
5
Gasoline engineDiesel engine

6478-2. Steps to take in an emergency
HILUX_OM_OM0K375E_(EE)
8
When trouble arises
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 any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
If the fan is operating:
Have the vehicle inspected at the nearest authorized Toyota retailer
or Toyota authorized repairer, or any reliable repairer.
WARNING
■ 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 (especially a tie, a scarf or a muffler) away from
the fans and belts. Failure to do so may cause the hands or clothing to be
caught, resulting in serious injury.
● Do not loosen the radiator cap or the coolant reservoir cap while the
engine and radiator are hot. High tem perature 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 additive.
6
7