2021 TOYOTA YARIS HATCHBACK engine overheat

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YARIS(HB) Owner's Manual_Europe_MK0001_en
4-2. Driving procedures
engine switch mode.
■Engine switch illumination
In the following situations, the engine
switch is illuminated.
●When the driver’s or passenger’s door
is opened.
●When the engine switch is in ACC or
ON.
●When the engine switch mode is
changed from ACC or ON to off.
Also, in the following situation, the
engine switch flashes.
●When depressing the brake pedal
while carrying the electronic key.
■If the engine does not start
●The engine immobilizer system may
not have been deactivated. (→P.76)
Contact any authorized Toyota retailer
or Toyota authorized repairer, or any
reliable repairer.
●If a message related to start-up is
shown on the multi-information dis-
play, read the message and follow the
instructions.
■If the battery is discharged
The engine cannot be started using the
smart entry & start system. Refer to
P.401 to restart the engine.
■Electronic key battery depletion
→P. 1 1 2
■Conditions affecting operation
→P. 1 2 4
■Notes for the entry function
→P. 1 2 5
■Steering lock function
●After turning the engine switch off and
opening and closing the doors, the
steering wheel will be locked due to
the steering lock function. Operating
the engine switch again automatically
cancels the steering lock.
●When the steering lock cannot be
released, “Push Engine Switch while
Turning Steering Wheel in Either
Direction” will be displayed on the
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. 3 4 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.

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YARIS(HB) Owner's Manual_Europe_MK0001_en
4-5. Using the driving support systems
Driving
tions may be generated from the brake
system, but this is not a malfunction.
■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, Trailer Sway Control and VSC sys-
tems
After turning the TRC, Trailer Sway Con- trol 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.
■Operating conditions of Active Cor-
nering Assist
The system operates when the following occurs.
●TRC/VSC can operate
●The driver is attempting to accelerate while turning
●The system detects that the vehicle is drifting to the outer side
●The brake pedal is released
■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-
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
The system operates when the SRS air- bag sensor detects a collision while the vehicle is in motion.
However, the system does not operate when components are damaged.
■Secondary Collision Brake auto-matic cancelation
The system is automatically canceled in any of the following situations.
●The vehicle speed drops approxi-mately 0 km/h (0 mph)
●A certain amount of time elapses during operation
●The accelerator pedal is depressed a large amount
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).

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YARIS(HB) Owner's Manual_Europe_MK0001_en
7
When trouble arises
When trouble arises
7-1. Essential information
Emergency flashers .......... 360
If your vehicle has to be
stopped in an emergency 360
If the vehicle is trapped in rising
water............................... 361
7-2. Steps to take in an emer-
gency
If your vehicle needs to be
towed .............................. 363
If you think something is wrong
....................................... 366
Fuel pump shut off system 367
If a warning light turns on or a
warning buzzer sounds... 368
If a warning message is dis-
played ............................. 377
If you have a flat tire (vehicles
with an emergency tire punc-
ture repair kit) ................. 379
If you have a flat tire (vehicles
with a spare tire) ............. 389
If the engine will not start .. 397
If you lose your keys ......... 399
If the electronic key does not
operate properly (vehicles
with a smart entry & start sys-
tem) ................................ 399
If the vehicle battery is dis-
charged .......................... 401
If your vehicle overheats... 405
If the vehicle becomes stuck
....................................... 408

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YARIS(HB) Owner's Manual_Europe_MK0001_en
7-2. Steps to take in an emergency
When trouble arises
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.
WARNING
■When replacing the battery
●When the vent plug and indicator
are close to the hold down clamp, the battery fluid (sulfuric acid) may leak.
●For information regarding battery replacement, contact any autho-
rized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
NOTICE
■When handling jumper cables
When connecting the jumper cables, ensure that they do not become
entangled in the cooling fan or engine drive belt.
If your vehicle overheats
The following may indicate that
your vehicle is overheating.
z The engine coolant tempera-
ture gauge ( →P.86, 90) 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

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YARIS(HB) Owner's Manual_Europe_MK0001_en
Alphabetical Index
C
Care ....................................... 308, 311
Aluminum wheels ....................... 308
Exterior....................................... 308
Interior ........................................ 311
Seat belts ................................... 311
Chains ........................................... 275
Child restraint system .................... 47
Points to remember...................... 47
Riding with children ...................... 46
Child safety ..................................... 46
Airbag precautions ....................... 41
Battery precautions ............ 328, 404
Child restraint system .................. 47
Heated steering wheel and seat
heater precautions ................... 289
How your child should wear the seat
belt ............................................. 34
Installing child restraints............... 47
Power window lock switch ......... 141
Power window precautions ........ 140
Rear door child-protectors ......... 119
Removed electronic key battery pre-
cautions ................................... 347
Seat belt precautions ................... 46
Child-protectors............................ 119
Cleaning ................................ 308, 311
Aluminum wheels ....................... 308
Exterior....................................... 308
Interior ........................................ 311
Radar sensor ............................. 188
Seat belts ................................... 311
Clock ........................ 86, 88, 88, 90, 92
Coat hooks .................................... 304
Condenser..................................... 324
Consumption screen .................... 109
Cooling system ............................. 324
Engine overheating .................... 405
Cruise control
Dynamic radar cruise control ..... 213Cup holders ...................................294
Current fuel consumption ......95, 100
Curtain shield airbags ....................36
Customizable features ................. 422
D
Daytime running light system ..... 173
Deck board .................................... 295
Defogger
Outside rear view mirrors ... 280, 285
Rear window ...................... 280, 285
Windshield.......................... 280, 285
Dimensions ...................................410
Display
Dynamic radar cruise control ..... 213
Head-up display ......................... 105
LTA (Lane-Tracing Assist) .......... 209
Multi-information display ........93, 99
Speed limiter .............................. 224
Toyota parking assist-sensor...... 242
Warning message ...................... 377
Display change button ............. 87, 91
Distance until next engine oil change
................................................. 87, 91
Do-it-yourself maintenance ......... 314
Door
Double locking system ................. 77
Door lock
Back door ...................................120
Side doors .................................. 116
Smart entry & start system ......... 123
Wireless remote control ............. 114
Doors
Back door ...................................120
Door glasses .............................. 139
Door lock ............................ 116, 120
Open door warning buzzer . 117, 119
Outside rear view mirrors ........... 136
Rear door child-protectors.......... 119
Side doors .................................. 116
Double locking system................... 77

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YARIS(HB) Owner's Manual_Europe_MK0001_en
Alphabetical Index
Drive distance ......................... 97, 102
Drive information .................... 97, 102
Drive-start control ........................ 145
Driving ........................................... 144
Break-in tips ............................... 146
Correct driving posture................. 31
Driving mode select switch ........ 266
Procedures................................. 144
Winter drive tips ......................... 274
Driving information display ... 94, 100
Driving range .................. 95, 100, 101
Driving support system information
display ................................... 96, 102
Dynamic radar cruise control ...... 213
Road Sign Assist (RSA) ............. 220
Warning message ...................... 222
E
eCall ................................................. 66
“SOS” button ................................ 66
Eco drive mode ............................. 266
Eco Driving Indicator ..... 95, 101, 108
Eco Driving Indicator Light.... 95, 101
Elapsed time ........................... 97, 102
Electric Power Steering (EPS) ..... 269
Warning light .............................. 370
Electronic key ............................... 112
Battery-saving function .............. 124
If the electronic key does not operate
properly.................................... 399
Replacing the battery ................. 345
Emergency brake signal .............. 269
Emergency flashers ..................... 360
Emergency tire puncture ............. 379
Emergency, in case of
If a warning buzzer sounds ........ 368
If a warning light turns on ........... 368
If a warning message is displayed
................................................. 377
If the battery is discharged ......... 401
If the electronic key does not operate properly .................................... 399
If the engine will not start ........... 397
If the vehicle is trapped in rising
water ........................................361
If you have a flat tire ........... 379, 389
If you lose your keys ..................399
If you think something is wrong .. 366
If your vehicle becomes stuck .... 408
If your vehicle has to be stopped in
an emergency .......................... 360
If your vehicle needs to be towed
................................................. 363
If your vehicle overheats ............405
Engine ............................................ 412
ACC.................................... 158, 162
Compartment .............................320
Engine switch .....................158, 159
Fuel pump shut off system ......... 367
Hood........................................... 317
How to start the engine ...... 158, 159
Identification number .................. 411
If the engine will not start ........... 397
If your vehicle has to be stopped in
an emergency .......................... 360
Ignition switch (engine switch) . 158,
159
Overheating................................ 405
Tachometer .................... 86, 90, 108
Engine coolant .............................. 324
Capacity ..................................... 415
Checking .................................... 324
Preparing and checking before win-
ter ............................................. 274
Engine coolant temperature gauge
................................................. 86, 90
Engine immobilizer system ........... 76
Engine oil....................................... 321
Capacity ..................................... 413
Checking .................................... 321
Preparing and checking before win-
ter ............................................. 274

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YARIS(HB) Owner's Manual_Europe_MK0001_en
Alphabetical Index
Eco Driving Indicator ............ 95, 101
Fuel economy ...................... 95, 100
LTA (Lane-Tracing Assist) .......... 209
Menu icons............................. 93, 99
Meter control switches ......... 94, 100
Navigation system-linked display96,
102
Settings ................................ 97, 103
Stop & Start system information 98,
104
Tire pressure .............................. 332
Toyota parking assist-sensor ..... 242
Vehicle information display .. 97, 102
Warning message ...................... 377
Multidrive ...................................... 164
If the shift lever cannot be shifted
from P ...................................... 165
M mode ...................................... 167
Paddle shift switches ................. 166
N
Navigation system-linked display96,
102, 105
O
Odometer .................................. 87, 91
Odometer and trip meter display
Display change button ........... 87, 91
Display items.......................... 87, 91
Oil
Engine oil ................................... 413
Manual transmission .................. 416
Opener
Back door ................................... 122
Fuel filler door ............................ 186
Hood .......................................... 317
Outside rear view mirrors
Adjustment ................................. 136
BSM (Blind Spot Monitor) .......... 237
Folding ....................................... 137Outside rear view mirror defoggers
......................................... 280, 285
RCTA (Rear Crossing Traffic Alert)
................................................. 247
Outside temperature......... 86, 90, 108
Overheating ...................................405
P
Paddle shift switches ................... 166
Panoramic roof shade ..................305
Parking assist sensors (Toyota park-
ing assist-sensor) .......................242
Parking brake ................................ 171
Operation ...................................171
Parking brake engaged warning
buzzer ...................................... 171
Parking Support Brake (PKSB) ... 251
Enabling/disabling the Parking Sup-
port Brake ................................ 252
Parking Support Brake function
(rear-crossing vehicles)............262
Parking Support Brake function
(static objects) .......................... 256
Warning lights.............................373
Warning message ...................... 255
PCS (Pre-Collision System) ......... 193
Enabling/disabling the pre-collision
system...................................... 196
Function ..................................... 193
Warning light .............................. 374
Personal lights .............................. 291
Wattage ...................................... 419
PKSB (Parking Support Brake) ... 251
Enabling/disabling the Parking Sup-
port Brake ................................ 252
Parking Support Brake function
(rear-crossing vehicles)............262
Parking Support Brake function
(static objects) .......................... 256
Warning lights.............................373
Warning message ...................... 255