engine coolant TOYOTA GR YARIS 2021 Owners Manual

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YARIS(GR) Owner's Manual_Europe_M52L09_en
2-1. Instrument cluster
2-1.In strument clu ste r
For the purpose of explanation, the following illustrations display all warning
lights and indicators illuminated.
Warning lights inform the driver of
malfunctions in the indicated vehi-
cle’s systems.
Warning lights and indicators
The warning lights and indicators on the instrument cluster, center
panel and outside rear view mirrors inform the driver of the status of
the vehicle’s various systems.
Warning lights and indicators displayed on the instrument
cluster
Warning lights
Brake system warning light*1
( →P.315)
High coolant temperature
warning light*2 ( →P.315)
Charging system warning
light*2 ( →P.315)
Low engine oil pressure
warning light*2 ( →P.316)
Malfunction indicator lamp*1
( →P.316)
SRS warning light*1
( →P.316)
ABS warning light*1
( →P.316)
Brake Override System
warning light*2 ( →P. 3 1 7 )
(Red)
Electric power steering sys-
tem warning light*1 ( →P.317)
(Yellow)
Electric power steering sys-
tem warning light*1 ( →P.317)

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2-1. Instrument cluster
Gear Shift Indicator (→P.141)
Engine coolant temperature gauge
Displays the engine coolant temperature
Display change button ( →P. 8 4 )
■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. 8 7
■Customization
The gauges and meters can be custom-
ized in of the multi-information dis-
play. ( →P.361)
■Changing the display
Press the display change button
until the desired item is displayed.
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.346)
Odometer and trip meter
display

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YARIS(GR) Owner's Manual_Europe_M52L09_en
4-5. Using the driving support systems
Driving
●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 clutch pedal is not depressed.
• The shift lever is in N.
• The driver’s seat belt is fastened.
• The driver’s door is closed.
• The selected driving modes are nor-
mal mode and track mode.
• The windshield defogger is off.
• The engine is adequately warmed up.
• The outside temperature is -5°C
(23°F) or higher.
• The hood and back door are closed.
(P.197)
●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 steering wheel is being
operated.
• When the vehicle is being driven in a
high altitude area.
• When the battery fluid temperature is
extremely low or high.
• For a while after the battery terminals
have been disconnected and recon-
nected.
●When the engine is stopped by the
S t o p & S t a r t s y s t e m , t h e e n g i n e w i l l b e
restarted automatically if any of the
following conditions are met:
(To enable the engine to be stopped by
the Stop & Start system again, drive the
vehicle.)
• The air conditioning system is turned
on.
• The windshield defogger is turned on.
• The driver’s seat belt is unfastened.
• The driver’s door is opened.
• The driving mode is changed from
normal mode and track mode to
another mode.
• The Stop & Start cancel switch is
pressed.
• The steering wheel is operated.
• The vehicle starts to roll on an incline.
●When the engine is stopped by the
Stop & Start system, the engine may
restart automatically in the following
situations: (To enable the engine to be
stopped by the Stop & Start system
again, drive the vehicle.)
• When the brake pedal is pumped or
strongly depressed.
• When the air conditioning system is
being used.
• When a switch of the air conditioning
system is operated (windshield defog-
ger switch, etc.).
• If the battery charge becomes low.
■When the hood is opened
If the hood is opened while the engine is
stopped by the Stop & Start system, the
engine will stall and will not be able to be

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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.
Perform the following according to
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)
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.
Before driving the vehicle

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YARIS(GR) Owner's Manual_Europe_M52L09_en
6-3. Maintenance
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.83, 86)
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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YARIS(GR) Owner's Manual_Europe_M52L09_en
6-4. Do-it-yourself maintenance
Maintenance and care
6-4.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.275)
•Warm water
• Baking soda
• Grease
• Conventional wrench
(for terminal clamp
bolts)
Engine cool-
ant level
( →P.273)
• “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.271)
• “Toyota Genuine Motor
Oil” or equivalent
• Rag or paper towel
• Funnel (used only for
adding engine oil)
Fuses
( →P.297)
• Fuse with same
amperage rating as
original
Light bulbs
( →P.301)
• Bulb with same num-
ber and wattage rating
as original
• Flathead screwdriver
•Wrench
Radiator,
condenser
( →P.274)
⎯
Tire inflation
pressure
( →P.290)
• Tire pressure gauge
• Compressed air
source
Washer fluid
( →P.274)
• 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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6-4. Do-it-yourself maintenance
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.274)
■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

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6-4. Do-it-yourself maintenance
Maintenance and care
Washer fluid tank (→P.274)
Engine coolant reservoir ( →P. 2 7 3 )
Engine oil filler cap ( →P.272)
Engine oil level dipstick ( →P.272)
Fuse boxes ( →P.297)
Radiator ( →P.274)
Condenser ( →P.274)
Electric cooling fan
Intercooler
■Battery
→ P. 2 7 5
With the engine at operating tem-
Engine compartment
Components
Checking and adding the
engine oil

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YARIS(GR) Owner's Manual_Europe_M52L09_en
6-4. Do-it-yourself maintenance
Maintenance and care
■Engine oil consumption
A certain amount of engine oil will be
consumed while driving. In the following situations, oil consumption may increase, and engine oil may need to be
refilled in between oil maintenance inter- vals.
●When the engine is new, for example directly after purchasing the vehicle or after replacing the engine
●If low quality oil or oil of an inappropri-ate viscosity is used
●When driving at high engine speeds or with a heavy load, when towing
(vehicles with towing packages), or when driving while accelerating or decelerating frequently
●When leaving the engine idling for a long time, or when driving frequently
through heavy trafficThe coolant level is satisfactory if it
is between the “MAX” and “MIN”
lines on the reservoir when the
engine is cold.
Reservoir cap
“MAX” line
“MIN” line
If the level is on or below the “MIN” line,
add coolant up to the “MAX” line.
( →P.346)
■Coolant selection
Only use “Toyota Super Long Life Cool-
WARNING
■Used engine oil
●Used engine oil contains poten- tially harmful contaminants which may cause skin disorders such as
inflammation and skin cancer, so care should be taken to avoid pro-longed and repeated contact. To
remove used engine oil from your skin, wash thoroughly with soap and water.
●Dispose of used oil and filters only in a safe and acceptable manner.
Do not dispose of used oil and fil- ters in household trash, in sewers or onto the ground.
Call any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer, service station
or auto parts store for information concerning recycling or disposal.
●Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine dam-age
Check the oil level on a regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
●Avoid overfilling, or the engine could be damaged.
●Check the oil level on the dipstick every time you refill the vehicle.
●Be sure the engine oil filler cap is properly tightened.
Checking the coolant

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6-4. Do-it-yourself maintenance
ant” 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 authorized repairer, or any reliable
repairer, test the cap and check for leaks in the cooling system.
Check the radiator, condenser and
intercooler clear away any foreign
objects. If either of the above parts
is extremely dirty or you are not
sure of their condition, have your
vehicle inspected by any authorized
Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
If the washer fluid level is at “1/2”,
add washer fluid.
WARNING
■When the engine is hot
Do not remove the engine coolant reservoir 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 mix-ture 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.
Checking the radiator, con-
denser and intercooler
WARNING
■When the engine is hot
Do not touch the radiator, condenser
or intercooler as they may be hot and cause serious injuries, such as burns.
Adding the washer fluid
WARNING
■When adding washer fluid
Do not add washer fluid when the engine is hot or running as washer fluid contains alcohol and may catch
fire if spilled on the engine, etc.