coolant temperature TOYOTA YARIS HATCHBACK 2018 Owners Manual

792. Instrument cluster
2
Instrument cluster
Warning lights inform the driver of malfunctions in the indicated vehi-
cle’s systems.
Warning lights
*1
(Except Canada)
Brake system warning
light ( →P. 422)
*1Electric power steering
system warning light
(→P. 423)
*1
(Canada)
Brake system warning
light ( →P. 422)
*1, 2, 5
PCS warning light
(→P. 424)
*1Charging system warn-
ing light ( →P. 422)*1, 3Slip indicator
(→P. 424)
*1
Low engine oil pressure
warning light ( →P. 422)
*2
(Yellow)
Automatic High Beam
indicator ( →P. 424)
*1
(Red)
High engine coolant
temperature warning
light ( →P. 422)*2
(Yellow)
Cruise control indicator
(→P. 425)
*1
(Except Canada)
Malfunction indicator
lamp ( →P. 423)
*2
(Yellow)
LDA indicator
(→P. 425)
*1
(Canada)
Malfunction indicator
lamp ( →P. 423)
*2, 4
(Yellow)
Lane marker indicators
(→P. 425)
*1SRS warning light
(→P. 423)Open door warning light
(→P. 425)
*1
(Except Canada)
ABS warning light
(→P. 423)Low fuel level warning
light ( →P. 425)
*1
(Canada)
ABS warning light
(→P. 423)Driver’s and front pas-
senger’s seat belt
reminder light ( →P. 425)

812. Instrument cluster
2
Instrument cluster
*1: These lights turn on when the engine switch is turned to the “ON” positionto indicate that a system check is being performed. They will turn off after
the engine is started, or after a few seconds. There may be a malfunction
in a system if a light does not come on, or if the lights do not turn off. Have
the vehicle inspected by your Toyota dealer.
*2: If equipped
*3: The light turns on to indicate the engine coolant temperature is low.
*4: Vehicles with an automatic transmission
*5: The light flashes to indicate that the system is operating.
*6: This light illuminates on the center panel.
*7: The light comes on when the system is turned off.
*8: The light comes on when system settings are changed.
*9: The light flashes in yellow to indicate that the vehicle is deviating from thelane.
*1, 5
Slip indicator ( →P. 216)
*1, 2, 7PCS warning light
(→P. 180)
*1
“TRAC OFF” indicator
(→P. 216)
*1, 6
(Except Canada)
“AIR BAG ON/
OFF” indicator
(→P. 49)
*1
VSC off indicator
(→P. 217)
*1, 6
(Canada)
“AIR BAG ON/
OFF” indicator
(→P. 49)
*2, 5, 8PCS activation indicator
(→P. 177)

822. Instrument cluster
WARNING
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning light not
come on when you start the engine, this could mean that these systems are
not available to help protect you in an accident, which could result in death
or serious injury. Have the vehicle inspected by your Toyota dealer immedi-
ately if this occurs.
NOTICE
■ To prevent damage to the engine and its components
The engine may be overheating if the high engine coolant temperature
warning light flashes or turns on. In this case, immediately stop the vehicle
in a safe place, and check the engine after it has cooled completely.
( →P. 453)

3647-3. Do-it-yourself maintenance
The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold.Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to
the “FULL” line.
■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.
Except Canada
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -31°F [-35°C])
Canada
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deion-
ized water. (Minimum temperature: -44°F [-42°C])
For more details about coolant, contact your Toyota dealer.
■ If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, radiator
cap, drain cock and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for
leaks in the cooling system.
Engine coolant
1
2
3

4208-2. Steps to take in an emergency
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
● High engine coolant temperature warning light flashes or comes on
● 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, spon gy feeling, pedal almost touches
the floor
If you notice any of the follow ing symptoms, your vehicle proba-
bly needs adjustment or repair. Contact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

4228-2. Steps to take in an emergency
If a warning light turns on or a warning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by your Toyota dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(Except Canada)
(Canada)
Brake system warning light (warning buzzer)*1
• Low brake fluid
• Malfunction in the brake system
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released, the system is operating normally.
→ Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. Continuing to drive the vehi-
cle may be dangerous.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system.
→ Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Low engine oil pressure warning light
Indicates that the engine oil pressure is too low.
→ Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
(Red warning light
flashes or comes on)
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. 453

4538-2. Steps to take in an emergency
8
When trouble arises
If your vehicle overheats
●The high engine coolant temperature warning light ( →P. 422)
comes on or flashes, or a loss of engine power is experienced. (For
example, the vehicle sp eed does not increase.)
● 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.
After the engine has cooled
down sufficient ly, inspect the
hoses and radiator core (radia-
tor) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir.Reservoir
“FULL”
“LOW”
Radiator cap
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2
4
1
2
3
4

4548-2. Steps to take in an emergency
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the engine and turn the air conditioning system on to check
that the radiator cooling fan opera tes 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 your Toyota dealer.
If the fan is operating:
Have the vehicle in spected at the nearest Toyota dealer.
5
6
7

4659-1. Specifications
9
Vehicle specifications
Oil viscosity (5W-30 is explained here as an example): • The 5W in 5W-30 indicates the characteristic of the oil which
allows cold startability. Oils with a lower value before the W allow
for easier starting of the engine in cold weather.
• The 30 in 5W-30 indicates the viscosity characteristic of the oil when the oil is at high temperature. An oil with a higher viscosity
(one with a higher value) may be better suited if the vehicle is
operated at high speeds, or under extreme load conditions.
How to read oil container label:
The International Lubricant
Specification Advisory Commit-
tee (ILSAC) Certification Mark
is added to some oil containers
to help you select the oil you
should use.
Cooling system
Capacity
(Reference)
Automatic transmission
4.9 qt. (4.6 L, 4.0 Imp.qt.)
Manual transmission
5.0 qt. (4.7 L, 4.1 Imp.qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• A similar high-quality ethylene glycol-based non-silicate, non-amine, non-nitrite, and non-
borate coolant with long-life hybrid organic
acid technology
Do not use plain water alone.

512Alphabetical index
Eco Driving Indicator Light..... 130
Electric Power Steering (EPS)....................................... 215 Function ................................ 215
Warning light ......................... 423
Emergency flashers ................ 412
Emergency, in case of If the engine will not start ...... 448
If the vehicle battery is discharged .......................... 450
If the warning buzzer sounds ................................ 422
If the warning light
turns on .............................. 422
If you have a flat tire ............. 433
If you lose your keys ............... 94
If you think something is wrong.................................. 420
If your vehicle becomes
stuck ................................... 456
If your vehicle has to be stopped in an emergency ... 413
If your vehicle needs to be towed .................................. 415
If your vehicle overheats ....... 453 Engine
“ACC” position ...................... 146
Compartment ........................ 360
Engine switch ....................... 146
Hood ..................................... 356
How to start the engine......... 146
Identification number ............ 462
If the engine will not start ...... 448
If your vehicle has to be stopped in an emergency ... 413
Ignition switch (engine switch) ................... 146
Overheating .......................... 453
Engine coolant......................... 364 Capacity................................ 465
Checking............................... 364
Preparing and checking before winter ...................... 221
Engine coolant temperature
warning light.......................... 422
Engine immobilizer system ...... 74
Engine oil ................................. 361 Capacity................................ 464
Checking............................... 361
Preparing and checking before winter ...................... 221
Engine switch (ignition switch) .................... 146
EPS (Electric Power Steering) ................................ 215 Function ................................ 215
Warning light......................... 423
Event data recorder................... 10
E