2021 TOYOTA YARIS coolant temperature

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YARIS(HB) Owner's Manual_Europe_MK0001_en
6-3. Do-it-yourself maintenance
The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir when the engine is
cold.
Reservoir cap
“F” line
“L” line
If the level is on or below the “L” line,
add coolant up to the “F” line. ( →P.405)
■Coolant selection
Only use “Toyota Super Long Life Cool-
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 clear
away any foreign objects. If either
of the above parts is extremely dirty
or you are not sure of their condi-
tion, have your vehicle inspected by
any authorized Toyota retailer or
Toyota authorized repairer, or any
reliable repairer.
Checking the coolant
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

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YARIS(HB) Owner's Manual_Europe_MK0001_en
7-2. Steps to take in an emergency
reliable repairer.
5 Securely attach cables or chains
to the towing eyelet.
Take care not to damage the vehicle body.
6 Enter the vehicle being towed
and start the engine.
If the engine does not start, turn the engine switch to ON.
7 Shift the shift lever to N and
release the parking brake.
Multidrive: When the shift lever
cannot be shifted: →P. 1 6 5
■While towing
If the engine is not running, the power
assist for the brakes and steering will not function, making steering and brak-ing more difficult.
■Wheel nut wrench*1, 2
Wheel nut wrench is installed in luggage
compartment. ( →P.390)*1: If equipped
*2: If your vehicles does not provide a
wheel nut wrench, you can purchase
it from any authorized Toyota retailer
or Toyota authorized repairer, or any
reliable repairer.
z Fluid leaks under the vehicle.
(Water dripping from the air con-
ditioning after use is normal.)
z Flat-looking tires or uneven tire
wear
z Engine coolant temperature
gauge needle continually points
higher than normal.
z Changes in exhaust sound
z Excessive tire squeal when cor-
nering
z Strange noises related to the
suspension system
z Pinging or other noises related to
the engine
z Engine missing, stumbling or
running roughly
z Appreciable loss of power
If you think something is
wrong
If you notice any of the follow-
ing symptoms, your vehicle
probably needs adjustment or
repair. Contact any authorized
Toyota retailer or Toyota autho-
rized repairer, or any reliable
repairer as soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

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YARIS(HB) Owner's Manual_Europe_MK0001_en
7-2. Steps to take in an emergency
■Brake system warning light (warning buzzer)
■High coolant temperature warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
■Charging system warning light*
*: This light illuminates on the multi-information display.
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
any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.
Actions to the warning lights or warning buzzers
Warning lightDetails/Actions
Indicates that:
z The brake fluid level is low; or
z The brake system is malfunctioning
→ Immediately stop the vehicle in a safe place and contact
any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer. Continuing to drive the
vehicle may be dangerous.
Warning lightDetails/Actions
Indicates that the engine coolant temperature is excessively high
→ Immediately stop the vehicle in a safe place.
Handling method ( →P.405)
Warning lightDetails/Actions
Indicates a malfunction in the vehicle’s charging system
→ Immediately stop the vehicle in a safe place and contact
any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.

407
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YARIS(HB) Owner's Manual_Europe_MK0001_en
7-2. Steps to take in an emergency
When trouble arises
M15A-FKS engine
6 Start the engine and turn the air
conditioning system on to check
that the radiator cooling fan
operate and to check for coolant
leaks from the radiator or hoses.
The fan operate when the air condition- ing system is turned on immediately 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.)
7 If the fan is not operating: Stop
the engine immediately and
contact any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
If the fan is operating: Have the
vehicle inspected at the nearest
any authorized Toyota retailer or
Toyota authorized repairer, or
any reliable repairer.
WARNING
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
●If steam is seen coming from under the hood, do not open the hood until the steam has subsided. The
engine compartment may be very hot.
●Keep hands and clothing (espe-cially a tie, a scarf or a muffler) away from the fan and belts. Failure
to do so may cause the hands or clothing to be caught, resulting in serious injury.
●Do not loosen the coolant reservoir caps while the engine and radiator
are hot. High temperature steam or coolant could spray out.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has cooled down sufficiently. Adding
cool coolant to a hot engine too quickly can cause damage to the engine.
■To prevent damage to the cooling system
Observe the following precautions:
●Avoid contaminating the coolant
with foreign matter (such as sand or dust etc.).
●Do not use any coolant additive.

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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
Multidrive.................................... 164
Paddle shift switches ................. 166
TRC (Traction Control) ................. 269
Trip meters ................................ 87, 91
Turn signal lights .......................... 171
Replacing light bulbs .......... 351, 352
Turn signal lever ........................ 171
Wattage ...................................... 419
V
Vanity lights .................................. 303
Wattage ...................................... 419
Vanity mirrors ............................... 303
Vehicle data recording ..................... 7
Vehicle identification number...... 411
Vehicle information display ... 97, 102
Vehicle Stability Control (VSC).... 268
Vehicle Stability Control+ (VSC+) 268
VSC (Vehicle Stability Control).... 268
VSC+ (Vehicle Stability Control+) 268
W
Warning buzzers
Approach warning ...................... 219
Brake Override System .............. 370
Brake system ............................. 368
Downshifting .............................. 168
Drive-Start Control ..................... 370
Electric power steering............... 370
Engine ........................................ 369
High coolant temperature........... 368
Key reminder.............................. 159
Low engine oil pressure ............. 369
LTA (Lane Tracing Assist) .. 203, 372
Open door .......................... 117, 119
PCS (Pre-Collision System) ....... 374
PKSB (Parking Support Brake) .. 373
RCTA (Rear Crossing Traffic Alert)
......................................... 248, 373
Seat belt ..................................... 371SRS airbag ................................. 369
Stop & Start system ................... 372
Tire pressure .............................. 372
Toyota parking assist-sensor.... 242,
373
Warning lights ............................... 368
ABS ............................................ 369
Brake Override System .............. 370
Brake system .............................368
Charging system ........................ 368
Drive-Start Control ..................... 370
Electric power steering ............... 370
High coolant temperature ........... 368
Low engine oil pressure ............. 369
Low fuel level .............................371
LTA indicator ............................... 372
Malfunction indicator lamp ......... 369
PKSB OFF indicator ................... 373
Pre-collision system ................... 374
RCTA OFF indicator ................... 373
Seat belt reminder light .............. 371
Slip indicator............................... 374
SRS airbag ................................. 369
Stop & Start cancel indicator ...... 372
Tire pressure .............................. 372
Toyota parking assist-sensor OFF
indicator ...................................373
Warning messages .......................377
Washer ........................................... 181
Checking .................................... 329
Preparing and checking before win-
ter ............................................. 274
Switch......................................... 181
Washing and waxing .................... 308
Weight ............................................ 410
Wheels ........................................... 341
Replacing ...................................341
Size ............................................ 417
Window lock switch...................... 141
Windows
Power windows .......................... 139