overheating TOYOTA GR YARIS 2020 Owners Manual

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YARIS(GR) Owner's Manual_Europe_M52L09_en
Pictorial index
Refueling method .............................................................................P.154
Fuel type/fuel tank capacity .............................................................P.352
Tires ................................................................................................P.277
Tire size/inflation pressure ...............................................................P.357
Winter tires/tire chains .....................................................................P.226
Checking/rotation/tire pressure warning system ..............................P.277
Coping with flat tires.........................................................................P.325
Hood ................................................................................................P.268
Opening ...........................................................................................P.268
Engine oil .........................................................................................P.352
Coping with overheating ..................................................................P.346
Headlights/front position lights/daytime running lights/turn signal
lights .......................................................................................P.142, 144
Front fog lights...............................................................................P.150
Tail lights/turn signal lights ..................................................P.142, 144
Stop lights
Side turn signal lights ...................................................................P.142
License plate light..........................................................................P.144
Rear fog light ..................................................................................P.150
Back-up light
Shifting the shift position to R ..........................................................P.139
Light bulbs of the exterior lights for driving
(Replacing method: P.301, Watts: P.358)

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YARIS(GR) Owner's Manual_Europe_M52L09_en
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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4-1. Before driving
WARNING
●Do not touch the exhaust pipes while the engine is running or
immediately after turning the engine off.Doing so may cause burns.
■When taking a nap in the vehicle
Always turn the engine off. Otherwise,
if you accidentally move the shift lever or depress the accelerator pedal, this could cause an accident or fire due to
engine overheating. Additionally, if the vehicle is parked in a poorly ventilated area, exhaust gases may collect and
enter the vehicle, leading to death or a serious health hazard.
■When braking
●When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this may cause one side of the vehicle to
brake differently than the other side. Also, the parking brake may not securely hold the vehicle.
●If the brake booster device does not operate, do not follow other vehi-
cles closely and avoid hills or sharp turns that require braking.In this case, braking is still possible,
but the brake pedal should be depressed more firmly than usual. Also, the braking distance will
increase. Have your brakes fixed immediately.
●Do not pump the brake pedal if the engine stalls.Each push on the brake pedal uses
up the reserve for the power- assisted brakes.
●The brake system consists of 2 indi-vidual hydraulic systems; if one of the systems fails, the other will still
operate. In this case, the brake pedal should be depressed more firmly than usual and the braking
distance will increase. Have your brakes fixed immediately.
■If the vehicle becomes stuck
Do not spin the wheels excessively when a driven wheel is up in the air,
or the vehicle is stuck in sand, mud, etc. This may damage the driveline components or propel the vehicle for-
ward or backward, causing an acci- dent.
NOTICE
■When driving the vehicle
●Do not depress the accelerator and brake pedals at the same time during driving, as this may restrain
the engine output.
●Do not shift gears unless the clutch
pedal is fully depressed. After shift- ing, do not release the clutch pedal abruptly. Doing so may damage the
clutch, transmission and gears.
●Observe the following precautions.
Failure to do so may cause exces- sive premature wear or damage to the clutch, eventually making it diffi-
cult to accelerate and start off from a stop. Have the vehicle inspected by any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
• Do not rest your foot on the clutch pedal or depress it any time other than when shifting.
Doing so may cause clutch trouble.
• Do not use any gear other than the
1st gear when starting off and mov- ing forward.Doing so may damage the clutch.

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4-2. Driving procedures
Driving
multi-information display.
Press the engine switch shortly and firmly while turning the steering wheel left and right.
●To prevent the steering lock motor from overheating, operation of the
motor may be suspended if the engine is turned on and off repeatedly in a short period of time. In this case,
refrain from operating the engine switch. After about 10 seconds, the steering lock motor will resume func-
tioning.
■Electronic key battery
→ P. 2 9 5
■Operation of the engine switch
●If the switch is not pressed shortly and firmly, the engine switch mode may not change or the engine may not
start.
●If attempting to restart the engine
immediately after turning the engine switch off, the engine may not start in some cases. After turning the engine
switch off, please wait a few seconds before restarting the engine.
■Customization
If the smart entry & start system has
been deactivated in a customized set- ting, refer to P.339.
1 Stop the vehicle completely.
2 Set the parking brake. (→P.143)
Check the parking brake indicator is illuminated.
WARNING
■When starting the engine
Always start the engine while sitting in
the driver’s seat. Do not depress the accelerator pedal while starting the engine under any circumstances.
Doing so may cause an accident resulting in death or serious injury.
■Caution while driving
If engine failure occurs while the vehi- cle is moving, do not lock or open the
doors until the vehicle reaches a safe and complete stop. Activation of the steering lock in this circumstance may
lead to an accident, resulting in death or serious injury.
NOTICE
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start or stalls frequently, have your vehicle checked by any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer
immediately.
■Symptoms indicating a malfunc-
tion with the engine switch
If the engine switch seems to be oper- ating somewhat differently than usual,
such as the switch sticking slightly, there may be a malfunction. Contact any authorized Toyota retailer or
Toyota authorized repairer, or any reli- able repairer immediately.
Stopping the engine

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YARIS(GR) Owner's Manual_Europe_M52L09_en
4-2. Driving procedures
Driving
1Sets the parking brake
Fully pull the parking brake while
depressing the brake pedal.
The parking brake indicator light will
come on.
2 Releases the parking brake
Slightly raise the lever and lower it com-
pletely while pressing the button.
The parking brake indicator light will go
off.
■Parking the vehicle
→ P. 1 2 8
■Parking brake engaged warning
buzzer
A buzzer will sound if the vehicle is driven with the parking brake engaged.
“Release Parking Brake” is displayed on the multi-information display. (with the vehicle reached a speed of 5 km/h [3
mph])
■Usage in winter time
→ P. 2 2 7
Parking brake
Operating instructions
NOTICE
■When parking the vehicle
Before you leave the vehicle, shift the
shift lever to N, set the parking brake and make sure that the vehicle does not move. ( →P.128)
■Before driving
Fully release the parking brake.
Driving the vehicle with the parking
brake set will lead to brake compo-
nents overheating, which may affect
braking performance and increase
brake wear.

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4-5. Using the driving support systems
able repairer.
■Operating conditions of hill-start
assist control
When the following four conditions are
met, the hill-start assist control will oper-
ate:
●The shift lever is in a position other
than R when starting off forward on an
upward incline, or the shift lever is in
R when starting off backward on an
upward incline.
●The vehicle is stopped
●The accelerator pedal is not
depressed
●The parking brake is not engaged
●Engine switch is turned to ON
■Automatic system cancelation of
hill-start assist control
The hill-start assist control will turn off in
any of the following situations:
●The shift lever is shifted to R when
starting off forward on an upward
incline, or the shift lever is shifted to
other than R when starting off back-
ward on an upward incline.
●The accelerator pedal is depressed
●The parking brake is engaged
●2 seconds at maximum elapsed after
the brake pedal is released
●Engine switch is turned to OFF
■Sounds and vibrations caused by
the ABS, brake assist, VSC, TRC
and hill-start assist control sys-
tems
●A sound may be heard from the
engine compartment when the brake
pedal is depressed repeatedly, when
the engine is started or just after the
vehicle begins to move. This sound
does not indicate that a malfunction
has occurred in any of these systems.
●Any of the following conditions may
occur when the above systems are
operating. None of these indicates
that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard also
after the vehicle comes to a stop.
• The brake pedal may pulsate slightly
after the ABS is activated.
• The brake pedal may move down
slightly after the ABS is activated.
■EPS operation sound
When the steering wheel is operated, a
motor sound (whirring sound) may be
heard. This does not indicate a malfunc-
tion.
■Automatic reactivation of TRC and
VSC systems
After turning the TRC and VSC systems
off, the systems will be automatically re-
enabled in the following situations:
●When the engine switch is turned off
●If only the TRC system is turned off,
the TRC will turn on when vehicle
speed increases.
If both the TRC and VSC systems are
turned off, automatic re-enabling will
not occur when vehicle speed
increases.
■Reduced effectiveness of the EPS
system
The effectiveness of the EPS system is
reduced to prevent the system from
overheating when there is frequent
steering input over an extended period
of time. The steering wheel may feel
heavy as a result. Should this occur,
refrain from excessive steering input or
stop the vehicle and turn the engine off.
The EPS system should return to nor-
mal within 10 minutes.
■Operating conditions of emergency
brake signal
When the following conditions are met,
the emergency brake signal will oper-
ates:
●The emergency flashers are off
●Actual vehicle speed is over 55 km/h
(35 mph)
●The system judges from the vehicle
deceleration that it is a sudden brak-

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4-5. Using the driving support systems
Driving
ing operation.
■Automatic system cancelation of
emergency brake signal
The emergency brake signal will be can-
celed in any of the following situations:
●The emergency flashers are turned
on.
●The system judges from the vehicle
deceleration that is not a sudden brak-
ing operation.
■Secondary Collision Brake operat-
ing conditions (if equipped)
The system operates when the SRS air-
bag sensor detects a collision while the
vehicle is in motion.
However, the system does not operate in any of the following situations.
●The vehicle speed is below 10 km/h (6
mph)
●Components are damaged
■Secondary Collision Brake auto-
matic cancelation (if equipped)
The system is automatically canceled in
any of the following situations.
●The vehicle speed drops below
approximately 10 km/h (6 mph)
●A certain amount of time elapses
during operation
●The accelerator pedal is depressed a
large amount
■If a message about AWD is shown on the multi-information display
Perform the following actions.
MessageDetails/Actions
“AWD System
Overheated
Switching to
2WD Mode”
AWD system is overheating.
→Perform the following actions.
• Stop the vehicle in a safe place and let the engine idle.
*
Once the display message on the multi-information display turns
off, there is no problem continuing to drive.
If the message does not disappear, have your vehicle checked by
any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer immediately.

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4-5. Using the driving support systems
*: After stopping the vehicle, do not stop the engine until the display message has
turned off.
“AWD System
Overheated
2WD Mode
Engaged”
The vehicle switched from all-wheel drive (AWD) to front wheel
drive due to overheating.
→ Perform the following actions.
• Stop the vehicle in a safe place and let the engine idle.*
Once the display message on the multi-information display turns
off, the AWD system returns to normal.
If the message does not disappear, have your vehicle checked by
any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer immediately.
“AWD System
Malfunction
2WD Mode
Engaged Visit
Your Dealer”
A malfunction occurred in the AWD system.
→ Have your vehicle checked by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
MessageDetails/Actions
WARNING
■The ABS does not operate effec- tively when
●The limits of tire gripping perfor-mance have been exceeded (such as excessively worn tires on a snow
covered road).
●The vehicle hydroplanes while driv-
ing at high speed on wet or slick roads.
■Stopping distance when the ABS is operating may exceed that of normal conditions
The ABS is not designed to shorten the vehicle’s stopping distance. Always maintain a safe distance from
the vehicle in front of you, especially in the following situations:
●When driving on dirt, gravel or snow-covered roads
●When driving with tire chains
●When driving over bumps in the road
●When driving over roads with pot-holes or uneven surfaces
■TRC/VSC may not operate effec-tively when
Directional control and power may not
be achievable while driving on slip- pery road surfaces, even if the TRC/VSC system is operating. Drive
the vehicle carefully in conditions where stability and power may be lost.
■Hill-start assist control does not operate effectively when
●Do not overly rely on hill-start assist control. Hill-start assist control may not operate effectively on steep
inclines and roads covered with ice.

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YARIS(GR) Owner's Manual_Europe_M52L09_en
5-1. Using the air conditioning system and defogger
WARNING
■To prevent overheating and minor burn injuries
Observe the following precautions when using the seat heaters.
●Do not cover the seat with a blanket or cushion when using the seat heater.
●Do not use seat heater more than necessary.

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7-2. Steps to take in an emergency
1Stop the vehicle in a safe place
and turn off the air conditioning
system, and then stop the
engine.
2 If you see steam: Carefully lift
the hood after the steam sub-
sides.
If you do not see steam: Care-
fully lift the hood.
3 After the engine has cooled
down sufficiently, inspect the
hoses and radiator core (radia-
tor) for any leaks.
Cooling fan
Radiator
If a large amount of coolant leaks,
immediately contact any authorized
Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
4 The coolant level is satisfactory
if it is between the “MAX” or
“MIN” lines on the reservoir.
Reservoir
“MAX” line
“MIN” line
5 Add engine coolant if necessary.
Water can be used in an emergency if
If your vehicle overheats
The following may indicate that
your vehicle is overheating.
z The engine coolant tempera-
ture gauge ( →P.83) is in the
red zone or a loss of engine
power is experienced. (For
example, the vehicle speed
does not increase.)
z “Engine Coolant Temp High
Stop in a Safe Place See
Owner’s Manual” is shown on
the multi-information display.
z Steam comes out from under
the hood.
Correction procedures