2020 TOYOTA YARIS HATCHBACK engine overheat

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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
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5-1. Essential InformationIntroduction ....................... 386
5-2. Scheduled Maintenance Maintenance Monitor......... 388
5-3. Owner Maintenance Owner Maintenance Precautions ..................... 390
Hood.................................. 392
Engine Compartment Overview ......................... 394
Engine Oil.......................... 395
Engine Coolant.................. 398
Brake/Clutch Fluid ............. 401
Window Washer Fluid ....... 402
Body Lubrication ............... 403
Wiper Blades ..................... 404
Battery ............................... 408
Key Battery Replacement ................... 410
Tires .................................. 413
Light Bulbs ........................ 419
Fuses ................................ 435
5-4. Appearance Care Exterior Care ..................... 442
Interior Care ...................... 450 6-1. Parking in an Emergency
Parking in an Emergency ...................... 456
6-2. Flat Tire Spare Tire and Tool Storage ............................ 457
Changing a Flat Tire .......... 463
6-3. Battery Runs Out Jump-Starting .................... 478
6-4. Emergency Starting Starting a Flooded Engine ............................. 482
Push-Starting ..................... 483
6-5. Overheating Overheating ....................... 484
6-6. Emergency Towing Towing Description ............ 486
Tiedown Hooks .................. 487
6-7. Warning/Indicator Lights and Warning Sounds
If a Warning Light Turns On or Flashes .................. 489
Message Indicated on Display............................. 500
Warning Sound is Activated.......................... 502
6-8. When Trunk Lid Cannot be Opened
When Liftgate/Trunk Lid Cannot be Opened .......... 506
5Maintenance and Care6If Trouble Arises

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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
2-9. Driving Tips
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Before Driving
Rocking the Vehicle
If you must rock the vehicle to free it from snow, sand or mud, depress
the accelerator slightly and slow ly move the shift lever from 1 (D) to R
position.
WARNING
■ Do not spin the wheels at more th an 35 mph (56 km/h), and do not
allow anyone to stand behind a wheel when pushing the vehicle
When the vehicle is stuck, spinning the wheels at high speed is dangerous.
The spinning tire could overheat and explode. This could cause serious
injuries.
NOTICE
Too much rocking may cause engine overheating, transaxle failure, and tire
damage.

YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
1913-3. Transaxle
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When Driving
■Passing
For extra power when passing another vehicle or climbing steep
grades, depress the accelerator fully. The transaxle will shift to a
lower gear, depending on vehicle speed.
Some models:
The accelerator pedal may initially feel heavy as it is being d epressed,
then feel lighter as it is depressed further. This change in pe dal force
aids the engine control system in determining how much the acce lerator
pedal has been depressed for performing kickdown, and functions to
control whether or not kickdown should be performed.
■
Climbing steep gra des from a stop
To climb a steep grade from a stopped position: Depress the brake pedal.
Shift to D or M1, depending on the load weight and grade steep-
ness.
Release the brake pedal wh ile gradually accelerating.
■Descending steep grades
When descending a steep grade, shift to lower gears, depending on
load weight and grade steepnes s. Descend slowly, using the
brakes only occasionally to p revent them from overheating.
Driving Tips
WARNING
■Do not let the vehicle move in a direction opposite to the direction
selected by the selector lever
Do not let the vehicle move backward with the selector lever in a forward
position, or do not let the vehicle move forward with the selec tor lever in the
reverse position. Otherwise, the engine may stop, causing the loss of the
power brake and power steering f unctions, and make it difficult to control
the vehicle which could result in an accident.
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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
3-5. Brake
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When Driving
Brake System
This vehicle has power-assisted brakes that adjust automatically
through normal use.
Should power-assist fail, you can stop by applying greater forc e than
normal to the brake pedal. But the distance required to stop wi ll be
greater than usual.
Foot Brake
WARNING
■ Do not coast with the engine stalled or turned off, find a safe place to
stop
Coasting with the engine stalled or turned off is dangerous. Br aking will
require more effort, and the brake’s power-assist could be depleted if you
pump the brake. This will cause longer stopping distances or even an acci-
dent.
■ Shift to a lower gear whe n going down steep hills
Driving with your foot continuously on the brake pedal or steadily applying
the brakes for long distances is dangerous. This causes overheated brakes,
resulting in longer stopping distances or even total brake fail ure. This could
cause loss of vehicle control and a serious accident. Avoid con tinuous
application of the brakes.
■ Dry off brakes that have become wet by driving slowly, releasin g the
accelerator pedal and lightly applying the brakes several times until
the brake performance returns to normal
Driving with wet brakes is dangerous. Increased stopping distan ce or the
vehicle pulling to one side when braking could result in a seri ous accident.
Light braking will indicate whether the brakes have been affect ed.
■ To apply the brakes correctly
● Wear shoes appropriate for driving in order to avoid your shoe contacting
the brake pedal when depressing the accelerator pedal.
● Always depress the brake pedal with
the right foot. Applying the brakes with
the unaccustomed left foot could slow
your reaction time to an emergency sit-
uation resulting in insufficient braking
operation.

YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
2634-1. Climate Control System
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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 di al to the
extreme cold position and set the air intake selector to the re circulated air
position, then turn the fan control dial fully clockwise.
● If warmer air is desired at floor level, set the mode selector dial to the
position and adjust the temperature control dial to maintain ma ximum 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. 164).
The air conditioner may cause engine overheating. If the warnin g light is
illuminated or flashing, turn the air-conditioning off ( P. 484).
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6If Trouble Arises
6-1. Parking in an EmergencyParking in an Emergency ...................... 456
6-2. Flat Tire Spare Tire and Tool Storage ........................... 457
Changing a Flat Tire ......... 463
6-3. Battery Runs Out Jump-Starting.................... 478
6-4. Emergency Starting Starting a Flooded Engine............................. 482
Push-Starting .................... 483
6-5. Overheating Overheating ...................... 484
6-6. Emergency Towing Towing Description ........... 486
Tiedown Hooks ................. 487
6-7. Warning/Indicator Lights and Warning Sounds
If a Warning Light Turns On or Flashes ................. 489
Message Indicated on Display ............................ 500
Warning Sound is Activated ......................... 502
6-8. When Trunk Lid Cannot be Opened
When Liftgate/Trunk Lid Cannot be Opened ......... 506

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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
6-5. Overheating
Overheating
If the high engine coolant temperature warning light turns on:
Drive safely to the side of the road and park off the right-of-way.
Put a vehicle with an automatic t ransaxle in park (P), a manual tran-
saxle in neutral.
Apply the parking brake.
Turn off the air conditioner.
Check whether coolant or steam is escaping from the engine com-
partment.
If steam is coming from the engine compartment
Do not go near the front of t he vehicle. Stop the engine.
Wait until the steam dissipates, then open the hood and start the
engine.
If neither coolant nor steam is escaping
Open the hood and idle the engine until it cools.
Make sure the cooling fan is operating, then turn off the engin e after
the temperature has decreased.
When cool, check th e coolant level.
If it is low, look for coolant lea ks from the radiator and hoses.
■If you find a leak or other damage, or if coolant is still leak ing:
Stop the engine and call your Toyota dealer.
Cooling fan
Cooling system cap
Coolant reservoir
If the high engine coolant temperature warning light turns on,
the vehicle loses power, or you hear a loud knocking or pinging
noise, the engine is probably too hot.
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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
4856-5. Overheating
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If Trouble Arises
■If you find no problems, the engine is cool, and no leaks are
obvious:
Carefully add coolant as required (P. 398).
WARNING
■ Pull over to a safe location, then 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. T he fan could
continue running indefinitely even if the engine has stopped an d the engine
compartment temperature is high. You could be hit by the fan an d 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.
■ Open the hood ONLY after steam is no longer escaping from the e ngine
Steam from an overheated engine is dangerous. The escaping stea m could
seriously burn you.
NOTICE
● If the cooling fan does not operate while the engine is running, the engine
temperature will increase. Stop the engine and call your Toyota dealer.
● If the engine continues to overheat or frequently overheats, ha ve the cool-
ing system inspected. The engine could be seriously damaged unl ess
repairs are made. Consult your Toyota dealer.