2021 TOYOTA HILUX cooling

1964-1. Before driving
HILUX_OM_OM0K513E_(EE)
Q Breaking in your new Toyota
To extend the life of the vehicle, observing the following precautions is recom-
mended:
O For the first 300 km (200 miles):
Avoid sudden stops.
O For the first 800 km (500 miles) (with towing hitch):
Do not tow a trailer. ( P. 207)
O For the first 1000 km (600 miles):
• Do not drive at extremely high speeds.
• Avoid sudden acceleration.
• Do not drive continuously in the low gears.
• Do not drive at a constant speed for extended periods.
• Do not drive slowly with the manual transmission in a high gear.
Q Idling time before engine stop (diesel engine only)
To prevent damage to the turbocharger, allow the engine to idle immediately
after high-load driving.
Q Operating your vehicle in a foreign country
Comply with the relevant vehicle registration laws and confirm the availability
of the correct fuel. ( P. 627)
Q Eco-friendly driving
 P. 128
Q After driving on muddy roads in poor condition (for EURO VI models*
with 1GD-FTV and 2GD-FTV engines)
Check the cooling fins of the urea injector and clear away any foreign objects
or substances such as leaves or mud. 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.
*: EURO VI is an emission standard. If it is not clear that your vehicle meets
relevant standards, contact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
Driving conditionIdling time
Normal city driving or high-speed driving (at the
highway speed limit or recommended speed)Not necessary
Steep hill driving, continuous driving (race track
driving etc.), or towing a trailer or another vehicle
(with towing hitch)
Approximately
1 minute

2364-2. Driving procedures
HILUX_OM_OM0K513E_(EE)
Q S mode
When the shift range is 4 or lower, holding the shift lever toward “+” sets the
shift range to 6.
Q Downshifting restrictions warning buzzer
To help ensure safety and driving per formance, downshifting operation may
sometimes be restricted. In some circumstances, downshifting may not be
possible even when the shift lever is operated. (A buzzer will sound twice.)
Q Operation of the air conditioning system in Eco drive mode (vehicles
with automatic air conditioning system)
Eco drive mode controls the heating/cooling operations and fan speed of the
air conditioning system to enhance fuel efficiency ( P. 446). To improve air
conditioning performance, adjust the fan speed or turn off Eco drive mode.
Q Deactivation of the driving mode
O Eco drive mode will not be canceled until the “ECO” switch is pressed, even
if the engine is turned off after driving in Eco drive mode.
O Power mode will be canceled if the engine is turned off after driving in power
mode.
O Driving mode will be canceled if the transfer mode is shifted to L4 while the
driving mode is in other than normal mode. (if equipped)
Q When driving with cruise control or dynamic radar cruise control acti-
vated (if equipped)
Even when performing the following actions with the intent of enabling engine
braking, engine braking will not activate because cruise control or dynamic
radar cruise control will not be canceled.
O While driving in S mode, downshifting to 5 or 4. (P. 235)
O When switching the driving mode to power mode while driving in D.
( P. 233)
Q Restraining sudden start (Drive-Start Control) (vehicles with VSC sys-
tem)
 P. 195
Q Shift lock system
The shift lock system is a system to prevent accidental operation of the shift
lever in starting.
The shift lever can be shifted from P only when the engine switch is in the
“ON” position (vehicles without smart entry & start system) or IGNITION ON
mode (vehicles with smart entry & start system) and the brake pedal is being
depressed.

2444-2. Driving procedures
HILUX_OM_OM0K513E_(EE)
Q Operation of the air conditioning system in Eco drive mode (vehicles
with automatic air conditioning system)
Eco drive mode controls the heating/cooling operations and fan speed of the
air conditioning system to enhance fuel efficiency ( P. 446). To improve air
conditioning performance, adjust the fan speed or turn off Eco drive mode.
Q Deactivation of the driving mode
O Eco drive mode will not be canceled until the “ECO” button is pressed, even
if the engine is turned off after driving in Eco drive mode.
O Power mode will be canceled if the engine is turned off after driving in power
mode.
O Driving mode will be canceled if the transfer mode is shifted to L4 while the
driving mode is in other than normal mode. (if equipped)
Q Reverse warning buzzer (6-speed transmission)
A buzzer will sound to alert the driver if the shift lever is shifted to the R posi-
tion.
Q Operation of iMT
O When the clutch pedal is depressed and the shift lever is moved to a posi-
tion, iMT controls the engine speed to be optimal for changing the shift posi-
tion. However, iMT stops operating before the shift position is changed if the
clutch pedal is not released for a while, and the engine speed cannot be
controlled. To operate iMT again, depress the clutch pedal and operate the
shift lever.
O The engine speed may be increased when the clutch pedal is depressed,
however, this does not indicate a malfunction.
Q When iMT does not operate
In the following situations, iMT may not operate. However, this does not indi-
cate a malfunction.
O The shift lever is not operated for a long time after the clutch pedal is
depressed.
O The vehicle moves for a while after the shift lever is shifted to N and the
clutch pedal is released, and then the clutch pedal is depressed and the
shift lever is moved to a position.
O The clutch pedal is not completely released and depressed again.
O The clutch pedal is not fully depressed.
Q If the warning message for iMT is shown on the multi-information dis-
play
iMT may be malfunctioning and the function is disabled. Have the vehicle
inspected at any authorized Toyota reta iler or Toyota authorized repairer, or
any reliable repairer as soon as possible.

4426-1. Using the air conditioning system and defogger
HILUX_OM_OM0K513E_(EE)
QChanging the air flow mode
Press to change the air
outlets.
The air outlets used are
switched each time the button is
pressed.
Air flows to the upper body.
Air flows to the upper body
and feet.
Mainly air flows to the feet.
Air flows to the feet and the
windshield defogger oper-
ates.
Press .
The dehumidification function begins to operate. Air outlets and fan
speed are automatically adjusted according to the temperature set-
ting.
Turn clockwise (warm) or counterclockwise (cool) to adjust
the temperature.
Press .
The cooling and dehumidification function switches between on and off
each time is pressed.
The indicator illuminates when the function is on.
To stop the operation, press .
QAutomatic mode indicator
If the fan speed setting or air flow modes are operated, the auto-
matic mode indicator goes off. However, automatic mode for func-
tions other than that operated is maintained.
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Using automatic mode
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4466-1. Using the air conditioning system and defogger
HILUX_OM_OM0K513E_(EE)
QUsing automatic mode
Fan speed is adjusted automatically according to the temperature setting and
the ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow
immediately after is pressed.
Q Fogging up of the windows
O The windows will easily fog up when the humidity in the vehicle is high.
Turning on will dehumidify the air from the outlets and defog the wind-
shield effectively.
O If you turn off, the windows may fog up more easily.
O The windows may fog up if the recirculated air mode is used.
Q When driving on dusty roads
Close all windows. If dust thrown up by the vehicle is still drawn into the vehi-
cle after closing the windows, it is recommended that the air intake mode be
set to outside air mode and the fan speed to any setting except off.
Q Outside/recirculated air mode
O Setting to the recirculated air mode temporarily is recommended in prevent-
ing dirty air from entering the vehicle interior and helping to cool the vehicle
when the outside air temperature is high.
O Outside/recirculated air mode may automatically switch depending on the
temperature setting or the inside temperature.
Q Operation of the air conditioning system in Eco drive mode (if equipped)
O In Eco drive mode, the air conditioning system is controlled as follows to pri-
oritize fuel efficiency:
• Engine speed and compressor operation controlled to restrict heating/
cooling capacity
• Fan speed restricted when automatic mode is selected
O To improve air conditioning performance, perform the following operations.
• Adjust the fan speed
• Turn off Eco drive mode
• Adjust the temperature setting
Q When the outside temperature falls to nearly 0°C (32°F)
The dehumidification function may not operate even when is pressed.

4616-3. Using the storage features
HILUX_OM_OM0K513E_(EE)
6
Interior features
*: The shape of the auxiliary box may differ depending on the grade, etc.
OAir conditioning-linked temperature regulation function (type A) (if
equipped):
By introducing air from the air conditioning system into the auxiliary box,
canned drinks etc. can be kept hot or cold. However, as the temperature
inside the auxiliary box will become the same as the temperature of the air
flowing from the air conditioning sy stem, extreme heating and cooling are
not possible. In high humidity condition, be careful of objects inside the aux-
iliary box, as condensation may form.
O Using the air conditioning-linked temperature regulation function (type A) (if
equipped):
Allow the air conditioning system to operate, and use or to
select either or . ( P. 434, 442)
Adjust the temperature. ( P. 434, 441)
Type G (if equipped)
Open the air intake lid inside the aux-
iliary box.
To blow a large amount of air into the
auxiliary box, close the passenger
side vent. ( P. 437, 445)
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4887-3. Do-it-yourself maintenance
HILUX_OM_OM0K513E_(EE)
Diesel engine (vehicles with water-cooled intercooler)
Engine coolant reservoir
( P. 492)
Engine oil filler cap ( P. 490)
Engine oil level dipstick
( P. 489)
AdBlue™ tank cap ( P. 500)
Fuel filter ( P. 499, 614)
Fuse box ( P. 520)
Battery ( P. 494)
Washer fluid tank ( P. 498)
Intercooler coolant reservoir
( P. 492)
Intercooler cooling radiator
( P. 493)
Condenser (if equipped)
( P. 493)
Radiator ( P. 493)
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4937-3. Do-it-yourself maintenance
HILUX_OM_OM0K513E_(EE)
7
Maintenance and care
QIf the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir cap, intercooler
coolant reservoir cap (if equipped), 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.
Check the radiator, condenser and intercooler coolant radiator/inter-
cooler and clear away any foreign objects. If any of the above parts is
extremely dirty or you are not sure of their condition, have your vehi-
cle inspected by any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
WARNING
Q When the engine is hot
Do not remove the radiator cap (if equipped), the engine coolant reservoir
cap or intercooler coolant reservoir cap (if equipped).
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
Q 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.
Q If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.
Q 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 coolant radiator/intercooler
(if equipped)
WARNING
Q When the engine is hot
Do not touch the radiator, condenser or intercooler coolant radiator/inter-
cooler as they may be hot and cause serious injuries, such as burns.