engine overheat TOYOTA YARIS iA 2018 Owners Manual (in English)

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YARIS iA_OM_OM99Q46z_(U)
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5-1. Essential InformationIntroduction ....................... 412
5-2. Scheduled Maintenance Maintenance Monitor......... 414
5-3. Owner Maintenance Owner Maintenance Precautions ..................... 417
Hood.................................. 419
Engine Compartment Overview ......................... 421
Engine Oil.......................... 422
Engine Coolant.................. 425
Brake/Clutch Fluid ............. 428
Window Washer Fluid ....... 429
Body Lubrication ............... 430
Wiper Blades ..................... 431
Battery ............................... 434
Key Battery Replacement ................... 436
Tires .................................. 439
Light Bulbs ........................ 445
Fuses ................................ 455
5-4. Appearance Care Exterior Care ..................... 462
Interior Care ...................... 470 6-1. Parking in an Emergency
Parking in an Emergency ...................... 476
6-2. Flat Tire Spare Tire and Tool Storage ............................ 477
Changing a Flat Tire .......... 481
6-3. Battery Runs Out Jump-Starting .................... 491
6-4. Emergency Starting Starting a Flooded Engine ............................. 494
Push-Starting ..................... 495
6-5. Overheating Overheating ....................... 496
6-6. Emergency Towing Towing Description ............ 498
Tiedown Hooks .................. 499
6-7. Warning/Indicator Lights and Warning Sounds
If a Warning Light Turns On or Flashes .................. 501
Message Indicated on Display............................. 512
Warning Sound is Activated.......................... 514
6-8. When Trunk Lid Cannot be Opened
When Trunk Lid Cannot be Opened....................... 517
5Maintenance and Care6If Trouble Arises

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2-8. 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 slowly move the shift lever from 1 (D) to R.
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.

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3-3. Transaxle
■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 depressed,
then feel lighter as it is depressed further. This change in pedal force
aids the engine control system in determining how much the accelerator
pedal has been depressed for performing kickdown, and functions to
control whether or not kickdown should be performed.
■
Climbing steep grades 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 while gradually accelerating.
■Descending steep grades
When descending a steep grade, shift to lower gears, depending on
load weight and grade steepness. Descend slowly, using the
brakes only occasionally to pr event them from overheating.
Driving Tips
WARNING
■Do not let the vehicle move in a di rection 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 selector lever in the
reverse position. Otherwise, the engine may stop, causing the loss of the
power brake and power steering functions , and make it difficult to control
the vehicle which could result in an accident.
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YARIS iA_OM_OM99Q46z_(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 st op by applying greater force than
normal to the brake pedal. But the distance required to stop will 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. Braking 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 wh en 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 failure. This could
cause loss of vehicle control and a serious accident. Avoid continuous
application of the brakes.
■ Dry off brakes that have become wet by driving slowly, releasing the
accelerator pedal and lightly applyi ng the brakes several times until
the brake performance returns to normal
Driving with wet brakes is dangerous. Increased stopping distance or the
vehicle pulling to one side when braking could result in a serious accident.
Light braking will indicate whether the brakes have been affected.
■ 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 iA_OM_OM99Q46z_(U)
2414-1. 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 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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6If Trouble Arises
6-1. Parking in an EmergencyParking in an Emergency ...................... 476
6-2. Flat Tire Spare Tire and Tool Storage ........................... 477
Changing a Flat Tire ......... 481
6-3. Battery Runs Out Jump-Starting.................... 491
6-4. Emergency Starting Starting a Flooded Engine............................. 494
Push-Starting .................... 495
6-5. Overheating Overheating ...................... 496
6-6. Emergency Towing Towing Description ........... 498
Tiedown Hooks ................. 499
6-7. Warning/Indicator Lights and Warning Sounds
If a Warning Light Turns On or Flashes ................. 501
Message Indicated on Display ............................ 512
Warning Sound is Activated ......................... 514
6-8. When Trunk Lid Cannot be Opened
When Trunk Lid Cannot be Opened ...................... 517

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YARIS iA_OM_OM99Q46z_(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 tr ansaxle 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 the 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 engine after
the temperature has decreased.
When cool, check the coolant level.
If it is low, look for coolant leaks from the radiator and hoses.
■If you find a leak or other damage , or if coolant is still leaking:
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 iA_OM_OM99Q46z_(U)
4976-5. 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. 425).
WARNING
■ 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.
■ Open the hood ONLY after steam is no longer escaping from the engine
Steam from an overheated engine is dangerous. The escaping steam 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, have the cool-
ing system inspected. The engine could be seriously damaged unless
repairs are made. Consult your Toyota dealer.

YARIS iA_OM_OM99Q46z_(U)
5036-7. Warning/Indicator Lights and Warning Sounds
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If Trouble Arises
(Red)
High Engine Coolant Temperature Warning LightThe light flashes when the engine coolant temperature is
extremely high, and illuminates when the engine coolant
temperature increases further.
Handling Procedure:
• Flashing light
Drive slowly to reduce engine load until you can find a
safe place to stop the vehicle and wait for the engine to
cool down.
• Illuminated light This indicates the possibility of overheating. Park the
vehicle in a safe place immediately and stop the engine.
Refer to Overheating P. 496.
Power Steering Malfunction Indicator Light
The light illuminates/flashes if the electric power steering
has a malfunction.
If the light illuminates/flashes, stop the vehicle in a safe
place and do not operate the steering wheel. There is no
problem if the light turns off after a while. Contact your
Toyota dealer if the light illuminates/flashes continuously.
SignalWarning

573Alphabetical index
YARIS iA_OM_OM99Q46z_(U)
Interior Care ............................. 470Cleaning the Lap/Shoulder
Belt Webbing ...................... 473
Cleaning the Upholstery and Interior Trim ........................ 471
Cleaning the Window Interiors .............................. 473
Dashboard Precautions ........ 470
Interior Lights .......................... 401 Map Lights ............................ 401
Overhead Lights ................... 401
Trunk Light ............................ 402
Jack........................................... 477
Jump-Starting .......................... 491
Key Suspend Function.............. 93
Keyless Entry System ............... 88
Key removed from vehicle warning beep ......................... 516
Keys ............................................ 86
Key suspend function ............. 93
Smart Key ............................... 89
Label Information .................... 554
Lane-Change Signals .............. 180
Laser Sensor ............................ 211
Leaving Home Light ................ 177
Light Bulbs Replacement......................... 445
Specifications........................ 559
Lighting Control....................... 175
Lights-on reminder .................. 514
Lubricant Quality ..................... 557 Maintenance
Information............................ 412
Maintenance Monitor .............. 414
Manual Transaxle Operation ............................... 160
Recommendations for shifting ................................ 162
Map Lights ............................... 401
Message Indicated on
Display ................................... 512
Meters and Gauges ................. 148
Mirror Defogger ....................... 185
Mirrors Outside mirrors ..................... 113
Rearview mirror .................... 114
Odometer and Trip Meter ...................................... 149
Outside Mirrors........................ 113
Outside Te mperature
Display ................................... 153
Overhead Console................... 407
Overhead Lights ...................... 401
Overheating ............................. 496
Overloading ............................. 134
Owner Maintenance
Closing the Hood .................. 420
Engine Compartment Overview ............................ 421
Key battery replacement....... 436
Opening the Hood ................ 419
Owner Maintenance Precautions ........................ 417
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