engine coolant TOYOTA YARIS HATCHBACK 2021 Owners Manual

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2-1. Instrument cluster
Vehicle status information and indicators
Warning lights inform the driver of
malfunctions in the indicated vehi-
cle’s systems.
*1: These lights come on when the
engine switch is turned to ON to indi-
cate that a system check is being
performed. They will turn off after the
engine is started, or after a few sec-
onds. There may be a malfunction in
a system if the lights do not come
on, or turn off. Have the vehicle
inspected by any authorized Toyota
retailer or Toyota authorized repairer,
or any reliable repairer.
*2: This light illuminates on the multi-
information display.
Warning lights
Brake system warning light*1
(→P.368)
High coolant temperature
warning light
*2 (→P.368)
Charging system warning
light
*2 (→P.368)
Low engine oil pressure
warning light
*2 (→P.369)
Malfunction indicator lamp
*1
(→P.369)
SRS warning light
*1
(→P.369)
ABS warning light
*1
(→P.369)
Brake Override System
warning light/Drive-Start
Control warning light
*2
(→P.370)
(Red)
Electric power steering sys-
tem warning light
*1 (→P.370)
(Yellow)
Electric power steering sys-
tem warning light
*1 (→P.370)
Low fuel level warning light
(→P.371)
Driver’s and front passen-
ger’s seat belt reminder light
(→P.371)
Rear passengers’ seat
belt reminder lights
*2
(→P.371)
Tire pressure warning light
*1
(→P.372)
(Orange)
LTA i n d i c a t o r*2 (if equipped)
(→P.372)
(Flashes)
Stop & Start cancel indica-
tor
*1 (if equipped) (→P.372)
(Flashes)
Toyota parking assist-sensor
OFF indicator
*1 (if equipped)
(→P.373)
(Flashes)
“RCTA OFF” indicator*1 (if
equipped) (→P.373)
PKSB OFF indicator
*1 (if
equipped) (→P.373)
(Flashes or
illuminates)
PCS warning light*1 (if
equipped) (→P.374)
Slip indicator
*1 (→P. 3 7 4 )

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2-1. Instrument cluster
Vehicle status information and indicators
Engine coolant temperature gauge
Displays the engine coolant temperature
Display change button (→P. 8 7 )
■Outside temperature display
●In the following situations, the correct outside temperature may not be dis-played, or the display may take longer
than normal to change: • When stopped, or driving at low speeds (less than 25 km/h [16 mph])
• When the outside temperature has changed suddenly (at the entrance/exit of a garage, tunnel, etc.)
●When “--” is displayed, the system may be malfunctioning. Take your
vehicle to any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
■Liquid crystal display
→ P. 9 4
■Customization
The gauges and meters can be custom-
ized in of the multi-information dis-
play. ( →P.422)
■Changing the display
Press the display change button
until the desired item is displayed.
■Display items
z Odometer
Displays the total distance the vehicle
has been driven.
z Trip meter A/Trip meter B
Displays the distance the vehicle has
WARNING
■The information display at low temperatures
Allow the interior of the vehicle to warm up before using the liquid crys-tal information display. At extremely
low temperatures, the information dis- play monitor may respond slowly, and display changes may be delayed.
For example, there is a lag between the driver’s shifting and the new gear
number appearing on the display. This lag could cause the driver to downshift again, causing rapid and
excessive engine braking and possi- bly an accident resulting in death or injury.
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone, which indicates the maximum
engine speed.
●The engine may be overheating if
the engine coolant temperature gauge is in the red zone (H). In this case, immediately stop the vehicle
in a safe place, and check the engine after it has cooled com-pletely. ( →P.405)
Odometer and trip meter
display

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2-1. Instrument cluster
■Locations of gauges and meters
The units of measure may differ depending on the intended destination of the vehi-
cle.
Tachometer
Displays the engine speed in revolutions per minute
Multi-information display
Presents the driver with a variety of vehicle data (→P. 9 9 )
Displays warning messages if a malfunction occurs (→P.377)
Clock (→P.92)
Speedometer
Engine coolant temperature gauge
Displays the engine coolant temperature
Fuel gauge
Displays the quantity of fuel remaining in the tank
Odometer and trip meter display (→P. 9 1 )
Outside temperature
Displays the outside temperature within the range of -40°C (-40°F) to 60°C (140°F)
Display change button (→P. 9 1 )
Gauges and meters (horizontal display)
Meter display

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2-1. Instrument cluster
Vehicle status information and indicators
Shift position indicator (Multidrive) (→P.164)
Gear Shift Indicator (manual transmission) (→P.170)
■Outside temperature display
●In the following situations, the correct outside temperature may not be dis-
played, or the display may take longer than normal to change:• When stopped, or driving at low
speeds (less than 25 km/h [16 mph]) • When the outside temperature has changed suddenly (at the
entrance/exit of a garage, tunnel, etc.)
●When “--” is displayed, the system
may be malfunctioning. Take your vehicle to any authorized Toyota retailer or Toyota authorized repairer,
or any reliable repairer.
■Liquid crystal display
→ P. 1 0 0
■Customization
The gauges and meters can be custom-
ized in of the multi-information dis-
play. ( →P.422)
■Changing the display
Press the display change button
until the desired item is displayed.
■Display items
z Odometer
Displays the total distance the vehicle
has been driven.
z Trip meter A/Trip meter B
Displays the distance the vehicle has
been driven since the meter was last
reset. Trip meters A and B can be used
WARNING
■The information display at low
temperatures
Allow the interior of the vehicle to warm up before using the liquid crys-
tal information display. At extremely low temperatures, the information dis-play monitor may respond slowly, and
display changes may be delayed.
For example, there is a lag between
the driver’s shifting and the new gear number appearing on the display. This lag could cause the driver to
downshift again, causing rapid and excessive engine braking and possi-bly an accident resulting in death or
injury.
NOTICE
■To prevent damage to the engine
and its components
●Do not let the indicator needle of the tachometer enter the red zone,
which indicates the maximum engine speed.
●The engine may be overheating if the engine coolant temperature gauge is in the red zone (H). In this
case, immediately stop the vehicle in a safe place, and check the engine after it has cooled com-
pletely. ( →P.405)
Odometer and trip meter
display

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4-1. Before driving
Driving
■Transmission information
Multidrive
To maintain engine braking effi-
ciency and charging system perfor-
mance when using engine braking,
do not use the transmission in D,
must be in M and select gear step 4
or lower. ( →P.164)
Manual transmission
Refrain from driving in 6th gear to
maintain the effectiveness of
engine braking and to maintain
charging system performance.
■If the engine overheats
Towing a loaded trailer up a long,
steep incline in temperatures
exceeding 30°C (85°F) may result
in the engine overheating. If the
engine coolant temperature gauge
indicates that the engine is over-
heating, turn the air conditioning off
immediately, leave the road and
stop the vehicle in a safe place.
( →P.405)
■When parking the vehicle
Always place wheel chocks under
the wheels of both the vehicle and
trailer. Firmly set the parking brake
and shift the shift lever to P (Multid-
rive) and 1 or R (manual transmis-
sion).
WARNING
Follow all the instructions described in
this section. Failure to do so could cause an accident resulting in death or serious injury.
■Trailer towing precautions
When towing, make sure that none of the weight limits are exceeded.
( →P.153)
■Vehicle speed in towing
Observe the legal maximum speeds for trailer towing.
■Before descending hills or long declines
Reduce speed and downshift. How-
ever, never downshift suddenly while descending steep or long downhill grades.
■Operation of the brake pedal
Do not hold the brake pedal
depressed often or for long periods of time. Doing so may result in the brake overheating or reduce braking effects.
■To avoid accident or injury
●Vehicles with a compact spare tire:
Do not tow a trailer when the com- pact spare tire is installed on your vehicle.
●Vehicles with the emergency tire puncture repair kit: Do not tow a
trailer when the tire installed is repaired with the emergency tire puncture repair kit.
●Vehicles with a Dynamic radar cruise control: Do not use dynamic
radar cruise control when you are towing.
NOTICE
■Do not directly splice trailer
lights
Directly splicing trailer lights may damage your vehicle’s electrical sys-
tem and cause a malfunction.

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4-5. Using the driving support systems
the vehicle from rolling backwards
before the engine is restarted and
drive force is generated. When
drive force is generated, the main-
tained brake force is automatically
canceled.
zThis function operates on flat
surfaces as well as steep
inclines.
zSound may be generated from
the brake system, but this does
not indicate a malfunction.
zBrake pedal response may
change and vibration may occur,
but this does not indicate a mal-
function.
■Points for use
●If the engine switch is pressed when
the engine is stopped by the Stop &
Start system, the engine will not be
able to be restarted by the automatic
engine start function. In this case,
restart the engine using the normal
engine starting procedure. (→ P.158,
159)
●When the engine is being restarted by
the Stop & Start system, the power
outlets may be temporarily unusable,
but this does not indicate a malfunc-
tion.
●Installation and removal of electrical
components and wireless devices
may affect the Stop & Start system.
Contact any authorized Toyota retailer
or Toyota authorized repairer, or any
reliable repairer for details.
●When stopping the vehicle for a lon-
ger period of time, turn the engine
switch off to stop the engine com-
pletely.
●When the engine is restarted by the
Stop & Start system, the steering
wheel may temporarily feel heavy.
■Operating conditions
●The Stop & Start system is operational
when all of the following conditions
are met:
• The vehicle has been driven a certain
amount of time.
• The brake pedal is being depressed
firmly.
• The clutch pedal is not depressed
(vehicles with a manual transmission).
• The shift lever is in D or P (vehicles
with a Multidrive).
• The shift lever is in N (vehicles with a
manual transmission).
• The driver’s seat belt is fastened.
• The driver’s door is closed.
• The selected driving mode is Normal
or Eco drive mode.
• The windshield defogger is off. (vehi-
cles without a manual air conditioning
system)
• The accelerator pedal is not being
depressed (vehicles with a Multidrive).
• The engine is adequately warmed up.
• The outside temperature is -5°C
(23°F) or higher.
• The hood is closed. (→P.233)
●In the following situations the engine
may not be stopped by the Stop &
Start system. This is not a malfunction
of the Stop & Start system.
• When the air conditioning system is
being used.
• When the battery is undergoing a peri-
odic recharge.
• When the battery is not sufficiently
charged, such as if the vehicle has
been parked for a long time and the
battery charge has decreased, the
electric load is large, the battery fluid
temperature is excessively low or the
battery has deteriorated.
• When the brake booster vacuum is
low.
• When the elapsed time since the
engine was restarted is short.
• When the vehicle is stopped fre-
quently, such as when in a traffic jam.
• When the engine coolant temperature
or transmission fluid temperature is
extremely low or high.
• When the vehicle is stopped on a

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4-6. Driving tips
4-6.Driving tips
zUse fluids that are appropriate to
the prevailing outside tempera-
tures.
• Engine oil
• Engine coolant
• Washer fluid
z Have a service technician
inspect the condition of the bat-
tery.
z Have the vehicle fitted with four
snow tires or purchase a set of
tire chains for the front tires.
Ensure that all tires are the same size
and brand, and that chains match the
size of the tires.
Winter driving tips
Carry out the necessary prepa-
rations and inspections before
driving the vehicle in winter.
Always drive the vehicle in a
manner appropriate to the pre-
vailing weather conditions.
Pre-winter preparations
WARNING
■Driving with snow tires
Observe the following precautions to
reduce the risk of accidents. Failure to do so may result in a loss of vehicle control and cause death or
serious injury.
●Use tires of the size specified.
●Maintain the recommended level of air pressure.
●Do not drive at speeds in excess of the speed limit or the speed limit specified for the snow tires being
used.
●Use snow tires on all, not just some
wheels.
■Driving with tire chains
Observe the following precautions to reduce the risk of accidents.Failure to do so may result in the vehi-
cle being unable to be driven safely, and may cause death or serious injury.
●Do not drive in excess of the speed limit specified for the tire chains
being used, or 50 km/h (30 mph), whichever is lower.
●Avoid driving on bumpy road sur-faces or over potholes.
●Avoid sudden acceleration, abrupt steering, sudden braking and shift-ing operations that cause sudden
engine braking.
●Slow down sufficiently before enter-
ing a curve to ensure that vehicle control is maintained.
●Do not use LTA (Lane Tracing Assist) system. (if equipped)
●Do not use LDA (Lane Departure Alert with steering control) system. (if equipped)
NOTICE
■Repairing or replacing snow tires
Request repairs or replacement of snow tires from any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer or legitimate tire retailers.
This is because the removal and attachment of snow tires affects the operation of the tire pressure warning
valves and transmitters.

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6-2. Maintenance
Maintenance and care
request that a record of maintenance
be kept.
■Does your vehicle need repairs?
Be on the alert for changes in perfor-
mance and sounds, and visual tip-offs
that indicate service is needed. Some
important clues are:
●Engine misses (misfire), stumbling or
pinging
●Appreciable loss of power
●Strange engine noises
●A fluid leak under the vehicle (How-
ever, water dripping from the air con-
ditioning system after use is normal.)
●Change in exhaust sound (This may
indicate a dangerous carbon monox-
ide 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, vehicle
pulls to one side when braking
●Engine coolant temperature continu-
ally higher than normal (→P.86, 90)
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 possi-
ble. Your vehicle may need adjustment
or repair.

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6-3. Do-it-yourself maintenance
6-3.Do-it-y ours elf main ten ance
Do-it-yourself service
precautions
If you perform maintenance by
yourself, be sure to follow the
correct procedure as given in
these sections.
Maintenance
ItemsParts and tools
Battery con-
dition
( →P.325)
•Warm water
• Baking soda
• Grease
• Conventional wrench
(for terminal clamp
bolts)
Engine cool-
ant level
( →P.324)
• “Toyota Super Long
Life Coolant” or a simi-
lar high quality eth-
ylene glycol-based
non-silicate, non-
amine, non-nitrite and
non-borate coolant
with long-life hybrid
organic acid technol-
ogy.
“Toyota Super Long
Life Coolant” is pre-
mixed with 50% cool-
ant and 50% deionized
water.
• Funnel (used only for
adding coolant)
Engine oil
level
( →P.321)
• “Toyota Genuine Motor
Oil” or equivalent
• Rag or paper towel
• Funnel (used only for
adding engine oil)
Fuses
( →P.348)
• Fuse with same
amperage rating as
original
Light bulbs
( →P.351)
• Bulb with same num-
ber and wattage rating
as original
• Flathead screwdriver
•Wrench
Radiator,
condenser
( →P.324)
⎯
Tire inflation
pressure
( →P.340)
• Tire pressure gauge
• Compressed air
source
Washer fluid
( →P.329)
• Water or washer fluid
containing antifreeze
(for winter use)
• Funnel (used only for
adding water or
washer fluid)
WARNING
The engine compartment contains many mechanisms and fluids that
may move suddenly, become hot, or become electrically energized. To avoid death or serious injury, observe
the following precautions.
■When working on the engine
compartment
●Keep hands, clothing and tools away from the moving fan and
engine drive belt.
●Be careful not to touch the engine,
radiator, exhaust manifold, etc. right after driving as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper and
rags, in the engine compartment.
ItemsParts and tools

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6-3. Do-it-yourself maintenance
Maintenance and care
1Pull the hood lock release lever.
The hood will pop up slightly.
2Push the auxiliary catch lever to
the left and lift the hood.
WARNING
●Do not smoke, cause sparks or expose an open flame to fuel or the
battery. Fuel and battery fumes are flammable.
●Be extremely cautious when work-ing on the battery. It contains poi-sonous and corrosive sulfuric acid.
●Take care because brake fluid can harm your hands or eyes and dam-
age painted surfaces. If fluid gets on your hands or in your eyes, flush the affected area with clean water
immediately. If you still experience discomfort, consult a doctor.
■When working near the electric cooling fan or radiator grille
Be sure the engine switch is OFF. With the engine switch in ON, the electric cooling fan may automatically
start to run if the air conditioning is on and/or the coolant temperature is high. ( →P.324)
■Safety glasses
Wear safety glasses to prevent flying
or falling material, fluid spray, etc. from getting in your eyes.
NOTICE
■If you remove the air cleaner fil-ter
Driving with the air cleaner filter
removed may cause excessive engine wear due to dirt in the air.
■If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads
wear or when the fluid level in the accumulator is high.If the reservoir needs frequent refill-
ing, it may indicate a serious problem.
Hood
Opening the hood