cooling TOYOTA YARIS iA 2018 Owners Manual (in English)

YARIS iA_OM_OM99Q46z_(U)
1092-3. Fuel and Emission
2
Before Driving
Engine Exhaust (Carbon monoxide)
WARNING
■Do not drive your vehicle if you sm ell exhaust gas inside the vehicle
Engine exhaust gas is dangerous. This gas contains carbon monoxide
(CO), which is colorless, odorless, and poisonous. When inhaled, it can
cause loss of consciousness and death. If you smell exhaust gas inside the
vehicle, keep all windows fully open and contact your Toyota dealer immedi-
ately.
■ Do not run the engine when inside an enclosed area
Running the engine inside an enclosed area, such as a garage, is danger-
ous. Exhaust gas, which contains poisonous carbon monoxide, could easily
enter the cabin. Loss of consciousness or even death could occur.
■ Open the windows or adjust the heating or cooling system to draw
fresh air when idling the engine:
Exhaust gas is dangerous. When the vehicle is stopped with the windows
closed and the engine running for a long time even in an open area,
exhaust gas, which contains poisonous carbon monoxide, could enter the
cabin. Loss of consciousness or even death could occur.
■ Clear snow from undern eath and around your vehi cle, particularly the
tail pipe, before starting the engine:
Running the engine when a vehicle is stopped in deep snow is dangerous.
The exhaust pipe could be blocked by the snow, allowing exhaust gas to
enter the cabin. Because exhaust gas contains poisonous carbon monox-
ide, it could cause loss of consciousness or even death to occupants in the
cabin.

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YARIS iA_OM_OM99Q46z_(U)
3-1. Start/Stop Engine
3
When Driving
Turning the Engine Off
Stop the vehicle completely.
Manual transaxle:
Shift into neutral and set the parking brake.
Automatic transaxle:
Shift the selector lever to the P position and set the parking brake.
Press the push button start to turn off the engine. The ignition posi-
tion is off.
● The cooling fan in the engine compartment could turn on for a few minutes
after the ignition is switched from ON to OFF, whether or not the A/C is on or
off, to cool the engine compartment quickly.
● When the push button start is pressed from ON to ACC or OFF, the KEY
indicator light (green) may flash for approximately 30 seconds indicating
that the remaining battery power of the key is low.
Replace with a new battery before the key becomes unusable.
Refer to Key Battery Replacement on P. 436.
● Automatic transaxle:
If the engine is turned off while the selector lever is in a position other than
P, the ignition switches to ACC.
Continuously pressing the push button start or quickly pressing it two
or more times while the engine is running or the vehicle is being
driven will turn the engine off immediately. The ignition switches to
ACC.
WARNING
■Do not stop the engine wh ile the vehicle is moving
Stopping the engine while the vehicle is moving for any reason other than in
an emergency is dangerous. Stopping the engine while the vehicle is mov-
ing will result in reduced braking ability due to the loss of power braking,
which could cause an accident and serious injury.
NOTICE
When leaving the vehicle, make sure the push button start is off.
Emergency Engine Stop
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YARIS iA_OM_OM99Q46z_(U)
4-1. Climate Control System
Operating Tips
• Operate the climate control system with the engine running.
• To prevent the battery from being discharged, do not leave the fan
control dial on for a long period of time with the ignition switched
ON when the engine is not running.
• Clear all obstructions such as leaves, snow and ice from the hood and the air inlet in the cowl grille to improve the system efficiency.
• Use the climate control system to defog the windows and dehumid- ify the air.
• The recirculate mode should be used when driving through tunnels or while in a traffic jam, or when you would like to shut off outside
air for quick cooling of the interior.
• Use the outside air position for v entilation or windshield defrosting.
• If the vehicle has been parked in di rect sunlight during hot weather,
open the windows to let warm air escape, then run the climate con-
trol system.
• Run the air conditioner about 10 mi nutes at least once a month to
keep internal parts lubricated.
• Have the air conditioner checked before the weather gets hot. Lack of refrigerant may make the air conditioner less efficient.
The refrigerant specifications
are indicated on a label
attached to the inside of the
engine compartment. Check
the label before refilling the
refrigerant. If the wrong type of
refrigerant is used, it could
result in a serious malfunction
of the air conditioner.
For details, consult your Toyota
dealer.
Label

YARIS iA_OM_OM99Q46z_(U)
2414-1. Climate Control System
4
Interior Features
Set the mode selector dial to the position.
Set the temperature control dial to the cold position.
Set the fan control dial to the desired speed.
Turn on the air conditioner by pressing the A/C switch.
After cooling begins, adjust the fan control dial and temperature
control dial as needed to maintain maximum comfort.
● When maximum cooling is desired, set the temperature control dial to the
extreme cold position and set the air intake selector to the recirculated air
position, then set the fan control dial to position 4.
● If warmer air is desired at floor level, set the mode selector dial to the
position and adjust the temperature control dial to maintain maximum com-
fort.
● The air to the floor is warmer than air to the face (except when the tempera-
ture control dial is set at the extreme hot or cold position).
Cooling
NOTICE
If the air conditioner is used while driving up long hills or in heavy traffic,
monitor the engine coolant temperature warning light to see if it is illumi-
nated or flashing ( →P. 148).
The air conditioner may cause engine overheating. If the warning light is
illuminated or flashing, turn the air-conditioning off ( →P. 496).
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4185-3. Owner Maintenance
YARIS iA_OM_OM99Q46z_(U)
WARNING
■Do not perform ma intenance work if you l ack sufficient knowledge and
experience or the proper tools an d equipment to do the work. Have
maintenance work done by a qualified technician
Performing maintenance work on a vehicle is dangerous if not done prop-
erly. You can be seriously injured while performing some maintenance pro-
cedures.
■ If you must run the engine while working under the hood, make certain
that you remove all jewelry (especially rings, bracelets, watches, and
necklaces) and all neckties, scarves, and similar loose clothing before
getting near the engine or coolin g fan which may turn on unexpectedly
Working under the hood with the engine running is dangerous. It becomes
even more dangerous when you wear jewelry or loose clothing.
Either can become entangled in moving parts and result in injury.
■ Switch the ignition to off and make sure the fan is not running
before attempting to work near the cooling fan
Working near the cooling fan when it is running is dangerous. The fan could
continue running indefinitely even if the engine has stopped and the engine
compartment temperature is high. You could be hit by the fan and seriously
injured.
■ Do not leave items in th e engine compartment
After you have finished checking or doing servicing in the engine compart-
ment, do not forget and leave items such as tools or rags in the engine com-
partment.
Tools or other items left in the engine compartment could cause engine
damage or a fire leading to an unexpected accident.

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YARIS iA_OM_OM99Q46z_(U)
5-3. Owner Maintenance
5
Maintenance and Care
Engine Compartment Overview
Engine oil dipstick
Engine oil-filler cap
Brake/Clutch fluid reservoir
BatteryFuse block
Cooling system cap
Engine coolant reservoir
Windshield washer fluid reser-
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YARIS iA_OM_OM99Q46z_(U)
5-3. Owner Maintenance
5
Maintenance and Care
Engine Coolant
Inspect the antifreeze protection and coolant level in the coolant res-
ervoir at least once a year—at t he beginning of the winter season—
and before traveling where temperatures may drop below freezing.
Inspect the condition and connecti ons of all cooling system and
heater hoses.
Replace any that are swollen or deteriorated.
The coolant should be at full in the
radiator and between the F and L
marks on the coolant reservoir
when the engine is cool.
Cooling fan
Cooling system cap
Coolant reservoir
If it is at or near L, add enough coolant to the coolant reservoir to pro-
vide freezing and corrosion protecti on and to bring the level to F.
Securely tighten the coolant reserv oir tank cap after adding coolant.
If the coolant reservoir is empty or new coolant is required frequently,
consult your Toyota dealer.
Changing the coolant should be done by your Toyota dealer.
Inspecting Coolant Level
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4265-3. Owner Maintenance
YARIS iA_OM_OM99Q46z_(U)
WARNING
■Do not use a match or live flame in the engine compartment. DO NOT
ADD COOLANT WHEN THE ENGINE IS HOT
A hot engine is dangerous. If the engine has been running, parts of the
engine compartment can become very hot. You could be burned. Carefully
inspect the engine coolant in the coolant reservoir, but do not open it.
■ Pull over to a safe location, then switch the ignition to off and
make sure the fan is not running befo re attempting to work near the
cooling fan
Working near the cooling fan when it is running is dangerous. The fan could
continue running indefinitely even if the engine has stopped and the engine
compartment temperature is high. You could be hit by the fan and seriously
injured.
■ Do not remove either cooling system cap when the engine and
radiator are hot
When the engine and radiator are hot, scalding coolant and steam may
shoot out under pressure and cause serious injury.

YARIS iA_OM_OM99Q46z_(U)
4275-3. Owner Maintenance
5
Maintenance and Care
NOTICE
●Radiator coolant will damage paint. Rinse it off quickly if spilled.
● Use only soft (deionized) water in the coolant mixture. Water that contains
minerals will cut down on the coolant’s effectiveness.
● Do not add only water. Always add a proper coolant mixture.
● The engine has aluminum parts and must be protected by an ethylene-gly-
col-based coolant to prevent corrosion and freezing.
● DO NOT USE coolants Containing Alcohol, methanol, Borate or Silicate.
These coolants could damage the cooling system.
● DO NOT MIX alcohol or methanol with the coolant. This could damage the
cooling system.
● Do not use a solution that contains more than 60% antifreeze.
This would reduce effectiveness.
● Use of engine coolant specifically designed for the YARIS iA is required
when replacing engine coolant. Using engine coolant that is not specifi-
cally designed for this vehicle may cause serious damage to the engine
and cooling system. For questions on how to obtain this specially
designed coolant, contact your Toyota dealer.

YARIS iA_OM_OM99Q46z_(U)
4595-3. Owner Maintenance
5
Maintenance and Care
15A/C MAG7.5 AAir conditioner
16AT P U M P15 A—
17AT15 ATransaxle control system (if equipped)
18D.LOCK25 APower door locks
19H/L RH20 AHeadlight (RH)
20ENG+B27.5 AEngine control system
21TA I L20 ATaillights, License plate lights, Parking
lights
22———
23ROOM25 AOverhead light
24FOG15 AFog lights (if equipped)
25H/CLEAN20 A—
26STOP10 ABrake lights
27HORN15 AHorn
28H/L LH20 AHeadlight (LH)
29ABS/DSC S30 AABS, Dynamic stability control system
30HAZARD15 AHazard warning flashers, Turn signal lights
31FUEL PUMP15 AFuel system
32FUEL WARM25 A—
33WIPER20 AFront window wiper and washer
34CABIN+B50 AFor protection of various circuits
35FA N 230 ACooling fan
36FUEL PUMP30 A—
37ABS/DSC M50 AABS, Dynamic stability control system
38EVVT20 A—
39———
40FA N 130 ACooling fan
41FA N 340 A—
42ENG.MAIN40 AEngine control system
DESCRIPTIONFUSE
RATINGPROTECTED COMPONENT