2023 TOYOTA YARIS CROSS engine coolant

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7-2. Steps to take in an emergency
Fluid leaks under the vehicle.
(Water dripping from the air con-
ditioning after use is normal.)
 Flat-looking tires or uneven tire
wear
 Engine coolant temperature
gauge needle continually points
higher than normal.
 Changes in exhaust sound
 Excessive tire squeal when cor-
nering
 Strange noises related to the
suspension system
 Pinging or other noises related to
the hybrid system
 Engine missing, stumbling or
running roughly
 Appreciable loss of power
 Vehicle pulls heavily to one side
when braking
 Vehicle pulls heavily to one side
when driving on a level road
 Loss of brake effectiveness,
spongy feeling, pedal almost
touches the floor
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

435
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7-2. Steps to take in an emergency
When trouble arises
■Brake system warning light (warning buzzer)
■Brake system warning light
■High coolant temperature warning light* (warning buzzer)
*: 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 g oes
off, this does not necessarily indicate a malfunction in the sy stem.
However, if this continues to o ccur, have the vehicle inspected by
any authorized Toyota retailer or Toyota authorized repairer, o r any
reliable repairer.
Actions to the warning lights or warning buzzers
Warning lightDetails/Actions
(Red)
Indicates that:
 The brake fluid level is low; or
 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
(Yellow)
Indicates a malfunction in:
 The regenerative braking system;
 The electronically controlled brake system; or
 The parking brake system
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
Warning lightDetails/Actions
Indicates that the engine coolant temperature is excessively hi gh
 Immediately stop the vehicle in a safe place.
Handling method ( P.477)

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7-2. Steps to take in an emergency
When trouble arises
■If “Radar Cruise Control Unavail-
able” is displayed (if equipped)
The dynamic radar cruise control with full-speed range system cannot be used
temporarily. Use the system when it becomes available again.
■If a message that indicates the need for visiting your Toyota dealer
is displayed
The system or part shown on the multi- information display is malfunctioning.
Have the vehicle inspected by any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer immediately.
■If a message that indicates the need for referring to Owner’s Man-ual is displayed
●If “Engine Coolant Temp High Stop in a Safe Place See Owner’s Manual” is
displayed, follow the instructions accordingly. ( P.477)
●If “Exhaust Filter Full See Owner’s Manual” is displayed, follow the instructions accordingly. ( P.327)
●If “Oil Pressure Low Stop in a Safe Place See Owner’s Manual” is dis-
played, follow the instructions accord- ingly. ( P.383)
●If any of the following messages are displayed on the multi-information dis-play, it may indicate a malfunction.
Have the vehicle inspected by any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer immediately. • “Smart Entry & Start System Malfunc-tion See Owner’s Manual”
• “Hybrid System Malfunction” • “Check Engine”• “Hybrid Battery System Malfunction”
• “Accelerator System Malfunction” • “Hybrid System Stopped”• “Engine Stopped”
●If any of the following messages are displayed on the multi-information dis-
play, it may indicate a malfunction. Immediately stop the vehicle and con-tact any authorized Toyota retailer or
Toyota authorized repairer, or any reli-
able repairer. • “Braking Power Low Visit Your Dealer”• “12-Volt Battery Charging System
Malfunction Visit Your Dealer”
●If “Low Auxiliary Battery See Owner’s
Manual” is shown, • When the display goes off after sev-eral seconds (displays for about 6
seconds): Maintain the hybrid system operation for more than 15 minutes and charge the 12-volt battery.
• When the display does not go off: Start up the hybrid system using the procedures: P. 4 7 2
●If “Maintenance Required for Traction Battery Cooling Parts See Owner’s
Manual” is shown, the filters may be clogged, the air intake vents may be blocked, or there may be a gap in the
duct. Therefore, perform the following correction procedure.• If the air intake vents and filters of the
hybrid battery (traction battery) are dirty, perform the procedure on P.406 to clean them.
• If the warning message is shown when the air intake vents and filters of the hybrid battery (traction battery) are
not dirty, have the vehicle inspected by any authorized Toyota retailer or Toyota authorized repairer, or any reli-
able repairer immediately.
■If “Maintenance Required For Trac- tion Battery At Your Dealer” is dis-played
The hybrid battery (traction battery) is scheduled to be inspected or replaced. Have the vehicle inspected by any
authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer immediately.
●Continuing to drive the vehicle without having the hybrid battery (traction bat-
tery) inspected will cause the hybrid system not to start.
●If the hybrid system does not start, contact any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer immediately.

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7-2. Steps to take in an emergency
When trouble arises
If the engine coolant temperature
gauge enters the red zone or
“Engine Coolant Temp High Stop
in a Safe Place See Owner’s
Manual” is shown on the multi-
information display
1 Stop the vehicle in a safe place
and turn off the air conditioning
system, and then stop the hybrid
system.
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 hybrid system has
cooled down sufficiently, inspect
the hoses and radiator core
(radiator) for any leaks.
Radiator
Cooling fan
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 “F” and “L”
lines on the reservoir.
Reservoir
“F” line
“L” line
5 Add coolant if necessary.
Water can be used in an emergency if
If your vehicle overheats
The following may indicate that
your vehicle is overheating.
 The engine coolant tempera-
ture gauge ( P.95, 100) is in
the red zone or a loss of hybrid
system power is experienced.
(For example, the vehicle
speed does not increase.)
 “Engine Coolant Temp High
Stop in a Safe Place See
Owner’s Manual” or “Hybrid
System Overheated Output
Power Reduced” is shown on
the multi-information display.
 Steam comes out from under
the hood.
Correction procedures

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7-2. Steps to take in an emergency
When trouble arises
“F” line
“L” line
5 Add coolant if necessary.
If water was added in an emergency, have the vehicle inspected at any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer as soon as possible.
6 After stopping the hybrid system
and waiting for 5 minutes or
more, start the hybrid system
again and check for the multi-
information display.
If the message does not disap-
pear: Stop the hybrid system
and contact any authorized
Toyota retailer or Toyota autho-
rized repairer, or any reliable
repairer.
If the message is not displayed:
The hybrid system temperature
has dropped and the vehicle
may be driven normally.
However, if the message appears again
frequently, contact 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.
●After the hybrid system has been turned off, check that the “READY”
indicator is off. When the hybrid system is operating, the gasoline engine may automatically start, or
the cooling fan may suddenly oper- ate even if the gasoline engine stops. Do not touch or approach
rotating parts such as the fan, which may lead to fingers or cloth-ing (especially a tie, a scarf or a
muffler) getting caught, resulting in serious injury.
●Do not loosen the coolant reservoir caps while the hybrid system and radiator are hot.
High temperature steam or coolant could spray out.
NOTICE
■When adding engine/power con-trol unit coolant
Add coolant slowly after the hybrid system has cooled down sufficiently. Adding cool coolant to a hot hybrid
system too quickly can cause dam- age to the hybrid system.
■To prevent damage to the cooling system
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or
dust etc.).

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8-1. Specifications
operated at high speeds, or
under extreme load conditions.
How to read oil container labels:
Either or both API registered marks
are added to some oil containers to
help you select the oil you should
use.
JASO GLV-1 Mark
API Service Symbol
Top portion: “API SERVICE SP” means
the oil quality designation by American
Petroleum Institute (API).
Center portion: “SAE 0W-16” means
the SAE viscosity grade.
Lower portion: “Resource-Conserving”
means that the oil has fuel-saving and
environmental protection capabilities.
ILSAC Certification Mark
The International Lubricant Specifica-
tion Advisory Committee (ILSAC) Certi-
f ic at i o n M ar k i s d is pl a ye d on t h e f r o nt o f
the container.
Cooling system
Capacity
(Reference)
Gasoline
engine4.7 L (5.0 qt., 4.1 Imp. qt.)
Power con-
trol unit1.3 L (1.4 qt., 1.1 Imp. qt.)
Coolant type
Use either of the following:
 “Toyota Super Long Life Coolant”
 Similar high-quality ethylene glycol-based non-sili-
cate, non-amine, non-nitrite, and non-borate coolant
with long-life hybrid organic acid technology
Do not use plain water alone.

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Alphabetical Index
Emergency, in case of
If a warning buzzer sounds ........ 435
If a warning light turns on ........... 435
If a warning message is displayed
................................................. 445
If the 12-volt battery is discharged
................................................. 472
If the electronic key does not operate
properly.................................... 470
If the hybrid system will not start 468
If the vehicle is trapped in rising
water ........................................ 427
If you have a flat tire........... 448, 459
If you lose your keys .................. 469
If you think something is wrong.. 434
If your vehicle becomes stuck .... 480
If your vehicle has to be stopped in
an emergency .......................... 426
If your vehicle needs to be towed
................................................. 429
If your vehicle overheats ............ 477
Energy monitor ............................. 123
Engine ........................................... 485
ACC ................................... 190, 193
Compartment ............................. 383
Engine switch ..................... 189, 191
Hood .......................................... 380
How to start the hybrid system. 189,
191
Identification number.................. 485
If the hybrid system will not start 468
If your vehicle has to be stopped in
an emergency .......................... 426
Ignition switch (power switch) .. 189,
191
Overheating ............................... 477
Power switch ...................... 189, 191
Tachometer ................................ 122
Engine coolant .............................. 385
Capacity ..................................... 488
Checking .................................... 385
Preparing and checking before win-
ter ............................................. 337
Engine coolant temperature gauge
...............................................95, 100
Engine oil....................................... 383
Capacity ..................................... 486
Checking .................................... 383
Preparing and checking before win-
ter ............................................. 337
Warning light .............................. 436
Engine oil maintenance data ....... 385
Engine switch (power switch) ... 189,
191
If your vehicle has to be stopped in
an emergency .......................... 426
EPS (Electric Power Steering) ..... 329
Warning light .............................. 438
EV drive mode ............................... 195
EV indicator .....................................76
Extended headlight lighting function
..................................................... 208
F
Flat tire
Tire pressure warning system .... 392
Vehicles with a spare tire ........... 459
Vehicles without a spare tire ...... 448
Floor mats ....................................... 32
Fluid
Brake .......................................... 490
Hybrid transmission.................... 489
Washer ....................................... 387
Fog lights
Switch......................................... 218
Wattage ...................................... 492

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Alphabetical Index
Parking Support Brake function
(static objects) ......................... 296
Warning lights ............................ 441
Warning message ...................... 295
Power back door opener switch . 143
Power control unit .......................... 79
Power control unit coolant .......... 385
Capacity ..................................... 488
Checking .................................... 385
Preparing and checking before win-
ter ............................................ 337
Power mode .................................. 322
Power outlet .................................. 359
Power steering (Electric power
steering system)......................... 329
Warning light .............................. 438
Power switch ........................ 189, 191
Auto power off function .............. 194
Changing the power switch modes
......................................... 190, 193
Power switch (engine switch)
If your vehicle has to be stopped in
an emergency .......................... 426
Power windows
Door lock linked window operation
................................................. 170
Jam protection function .............. 169
Operation ................................... 169
Window lock switch .................... 171
Pre-Collision System (PCS) ......... 231
Enabling/disabling the pre-collision
system ..................................... 235
Function ..................................... 231
Warning light .............................. 441
R
Radar cruise control (dynamic radar
cruise control with full-speed
range) .......................................... 252
Radiator ......................................... 387
RCTA (Rear Cross Traffic Alert)
Enabling/disabling the Rear Cross
Traffic Alert ............................... 286
RCTA (Rear Crossing Traffic Alert)
..................................................... 285
Warning lights.............................440
Rear Cross Traffic Alert (RCTA)
Enabling/disabling the Rear Cross
Traffic Alert ............................... 286
Rear Crossing Traffic Alert (RCTA)
..................................................... 285
Warning lights.............................440
Rear fog lights
Switch......................................... 218
Rear seats...................................... 158
Head restraints ........................... 160
Seat heaters ............................... 348
Rear turn signal lights ..................200
Replacing light bulbs ..........418, 419
Turn signal lever ......................... 200
Wattage ...................................... 492
Rear view mirror
Inside rear view mirror................ 165
Outside rear view mirrors ........... 166
Rear window defogger ................. 344
Rear window wiper .......................222
Refueling ....................................... 224
Capacity ..................................... 486
Fuel types...................................486
Opening the fuel tank cap .......... 224