2019 TOYOTA YARIS HATCHBACK coolant temperature

4867-2. Maintenance
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■Where to go for the maintenance service?
In order to maintain your vehicle in the best possible condition, Toyota recom-
mends that all repairs and service operations be carried out by authorized
Toyota retailers or Toyota authorized repairers, or any reliable repairers. For
repairs and services covered by your warranty, please visit an authorized
Toyota retailer or repairer, who will use genuine Toyota parts in repairing any
difficulties you may encounter. There can also be advantages in utilizing
authorized Toyota retailers or repairers for non-warranty repairs and services,
as members of the Toyota network will be able to expertly assist you with any
difficulties you may encounter.
Your Toyota retailer or Toyota authorized repairer, or any reliable repairer will
perform all of the scheduled maintenance on your vehicle reliably and eco-
nomically due to their experience with Toyota vehicles.
■Does your vehicle need repairs?
Be on the alert for changes in performance and sounds, and visual tip-offs
that indicate service is needed. Some important clues are:
●Engine misfire, stumbling or pinging
●Appreciable loss of power
●Strange engine noises
●A fluid leak under the vehicle (However, water dripping from the air condi-
tioning system after use is normal.)
●Change in exhaust sound (This may indicate a dangerous carbon monoxide
leak. Drive with the windows open and have the exhaust system checked
immediately.)
●Flat-looking tires, excessive tire squeal when cornering, uneven tire wear
●Vehicle pulls to one side when driven straight on a level road
●Strange noises related to suspension movement
●Loss of brake effectiveness, spongy feeling brake pedal or clutch pedal
(vehicles with a manual transmission), pedal almost touches the floor, vehi-
cle pulls to one side when braking
●Engine coolant temperature continually higher than normal
If you notice any of these clues, take your vehicle to any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer as soon as pos-
sible. Your vehicle may need adjustment or repair.

5027-3. Do-it-yourself maintenance
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■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 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 caps, drain cock
and water pump.
If you cannot find a leak, have any authorized Toyota retailer or Toyota autho-
rized repairer, or any reli able repairer test the cap and check for leaks in the
cooling system.
WARNING
■ When the engine is hot
Do not remove the radiator 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.

5798-2. Steps to take in an emergency
8
When trouble arises
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If you think something is wrong
●Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal)
● Flat-looking tires or uneven tire wear
● Vehicles with monochrome display: High engine coolant tempera-
ture warning light flashes or comes on
Vehicles with color display: Engine coolant temperature gauge nee-
dle continually points higher than normal
● Low engine coolant temperature indicator comes on or does not
come on continuously
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
● Engine misfire, stumbling or running roughly
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, spongy feeling, pedal almost touches
the floor
If you notice any of the following symptoms, your vehicle proba-
bly needs adjustment or repair. Contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

5828-2. Steps to take in an emergency
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*4
(Red warning light flashes or comes on)
*5
High engine coolant temperature warning light
Indicates that the engine is overheating.
As the coolant temperature rises, it changes from flashing
to steady on.
 P. 639
Malfunction indicator lamp
Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system;
• The electronic Multidrive control system (if equipped); or
• The emission control system.
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system.
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system.
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
Electric power steering system warning light
(warning buzzer)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system.
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
Warning lightWarning light/Details/Actions

6398-2. Steps to take in an emergency
8
When trouble arises
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If your vehicle overheats
●Vehicles with monochrome display: The high engine coolant tem-
perature warning light ( P. 582) comes on or flashes, or a loss of
engine power is experienced. (For example, the vehicle speed
does not increase.)
Vehicles with color display:
• The needle of the engine coolant temperature gauge ( P. 1 1 8 )
enters the red zone or a loss of engine power is experienced.
(For example, the vehicles speed does not increase.)
• The warning message indicating overheat is shown on the multi-
information display. ( P. 592)
● Steam comes out from under the hood.
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
The following may indicate that your vehicle is overheating:
Correction procedures
1
2

6418-2. Steps to take in an emergency
8
When trouble arises
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Add coolant if necessary.
Water can be used in an emergency if coolant is unavailable.
Start the engine and turn the air conditioning system on to check
that the radiator cooling fan operates and to check for coolant leaks
from the radiator or hoses.
The fan operates when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fan is operating by checking the fan
sound and air flow. If it is difficult to check these, turn the air conditioning
system on and off repeatedly.
(The fan may not operate in freezing temperatures.)
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.
5
1KR-FE engine2NR-FKE engine
6
7

683Alphabetical index
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Eco Driving Indicator Light ..... 114
Electric Power Steering
(EPS) ....................................... 355
Function ................................ 355
Warning light ......................... 582
Electronic key .......................... 142
Battery-saving function ......... 169
If the electronic key does not
operate properly ................. 631
Replacing the battery ............ 537
Emergency brake signal ......... 355
Emergency flashers................. 568
Emergency, in case of
If a warning message
is displayed ......................... 581
If the electronic key does
not operate properly ........... 631
If the engine will not start ...... 629
If the vehicle battery is
discharged .......................... 634
If the vehicle is trapped
in rising water ..................... 571
If the warning buzzer
sounds ................................ 581
If the warning light
turns on............................... 581
If you have a flat tire...... 596, 614
If you lose your keys ............. 145
If you think something is
wrong .................................. 579
If your vehicle becomes
stuck ................................... 643
If your vehicle has to be
stopped in an emergency ... 569
If your vehicle needs to be
towed .................................. 572
If your vehicle overheats ....... 639Engine
“ACC” position ...................... 241
Accessory mode ................... 245
Compartment ........................ 495
Engine switch................ 241, 243
Hood ..................................... 491
How to start
the engine................... 241, 243
Identification number ............ 648
If the engine will not start ...... 629
If your vehicle has to be
stopped in an emergency ... 569
Ignition switch
(engine switch) ........... 241, 243
Overheating .......................... 639
Engine coolant ......................... 501
Capacity ................................ 655
Checking ............................... 501
Preparing and checking
before winter....................... 362
Engine coolant temperature
warning light .......................... 582
Engine immobilizer system ...... 85
Engine oil ................................. 497
Capacity ................................ 650
Checking ............................... 497
Preparing and checking
before winter....................... 362
Warning lights ....................... 581
Oil pressure warning
messages ........................... 592
Engine switch
(ignition switch)............. 241, 243
Engine switch light
(ignition switch light) ............ 460
EPS (Electric Power
Steering)................................. 355
Function ................................ 355
Warning light ......................... 582
E

691Alphabetical index
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Warning lights .......................... 110
ABS ....................................... 582
Automatic High Beam
indicator .............................. 584
Brake system ........................ 581
Charging system ................... 581
Cruise control indicator ......... 584
Driver’s and front
passenger’s seat belt
reminder light...................... 585
Electric power steering
system ................................ 582
Engine coolant
temperature ........................ 582
Engine oil pressure ............... 581
Engine system ...................... 582
High engine coolant
temperature ........................ 582
Lane marker indicators ......... 584
LDA (Lane Departure Alert)
indicator .............................. 584
Low engine oil pressure ........ 581
Low fuel level ........................ 585
Malfunction indicator lamp .... 582
Master warning ..................... 585
Open door ............................. 584
PCS (Pre-Crash Safety
system) ............................... 583
Rear passengers’ seat belt
reminder lights .................... 585
Slip indicator ......................... 583
Smart entry &
start system indicator.......... 584
Speed limiter indicator .......... 584
SRS....................................... 582
Stop & Start cancel
indicator .............................. 584
Tire pressure ......................... 585
Warning messages ............... 592Washer.............................. 273, 277
Checking ............................... 507
Preparing and checking
before winter....................... 362
Switch ........................... 273, 277
Washing and waxing ............... 478
Weight....................................... 646
Wheels ...................................... 530
Replacing .............................. 530
Size ....................................... 659
Window glasses....................... 214
Window lock switch ................ 214
Windows ................................... 214
Power windows ..................... 214
Rear window
defogger ..................... 442, 453
Washer ................................. 273
Windshield wiper ..................... 273
Intermittent
windshield wiper ................. 273
Rain-sensing
windshield wiper ................. 274
Winter driving tips ................... 362
Wireless remote control
key .......................................... 143
Battery-saving function ......... 169
Locking/Unlocking................. 143
Replacing the battery ............ 537
WMA disc ................................. 378