2014 TOYOTA YARIS HYBRID engine coolant

3077-3. Do-it-yourself maintenance
7
Maintenance and care
If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine/power control unit coolant reservoir
caps, drain cock and water pump.
If you cannot find a leak, have any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional, test the cap and check for
leaks in the cooling system.
Check the radiator and condenser and clear away any foreign objects.
If any of the above parts is extremely dirty or you are not sure of their
condition, have your vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.
WARNING
When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir caps.
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 mixture 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.
Radiator and condenser
WARNING
When the hybrid system is hot
Do not touch the radiator or condenser as they may be hot and cause seri-
ous injuries, such as burns.

3688-2. Steps to take in an emergency
If you think something is wrong
Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal)
Flat-looking tires or uneven tire wear
High engine coolant temperature warning light flashes or comes on
Changes in exhaust sound
Excessive tire squeal when cornering
Strange noises related to the suspension system
Pinging or other noises related to the hybrid system
Engine misfire, 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 notice any of the following symptoms, your vehicle proba-
bly needs adjustment or repair. Contact any authorized Toyota
dealer or repairer, or another duly qualified and equipped pro-
fessional as soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

3708-2. Steps to take in an emergency
(Red warning light
flashers or comes
on)
High engine coolant temperature warning light
Indicates that the engine is overheating.
As the coolant temperature rises, it changes from flashing
to steady on.
P. 420
Hybrid system warning light (warning buzzer)
Indicates a malfunction in the hybrid system.
Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional.
Malfunction indicator lamp
Indicates a malfunction in:
• The hybrid system;
• The hybrid transmission control system;
• The electronic engine control system;
• The electronic throttle control system; or
• The emission control system.
Have the vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and
equipped professional immediately.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system.
Have the vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and
equipped professional immediately.
ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system.
Have the vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and
equipped professional immediately.
Warning lightWarning light/Details/Actions

4208-2. Steps to take in an emergency
If your vehicle overheats
The high engine coolant temperature warning light (P. 370)
comes on or flashes, or a loss of hybrid system power is experi-
enced. (For example, the vehicle speed does not increase.)
If the hybrid system overheat warning light (P. 373) comes on.
Steam comes out from under the hood.
If the high engine coolant temperature warning light comes on
or flashes
Stop the vehicle in a safe place and turn off the air conditioning
system, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has
cooled down sufficiently,
inspect the hoses and radia-
tor core (radiator) for any
leaks.
Radiator
Cooling fan
If a large amount of coolant
leaks, immediately contact any
authorized Toyota dealer or
repairer, or another duly quali-
fied and equipped professional.
The following may indicate that your vehicle is overheating:
Correction procedures
1
2
3
1
2

4238-2. Steps to take in an emergency
8
When trouble arises
Start the hybrid system and check for the hybrid system overheat
warning light.
If the warning light does not go off:
Stop the hybrid system and contact any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional.
If the warning light goes off:
Have the vehicle inspected at the nearest authorized Toyota dealer
or repairer, or another duly qualified and equipped professional.
WARNING
To prevent an accident or injury when inspecting under the hood of
your vehicle
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, caus-
ing serious injuries such as burns.
Check that the “READY” indicator is off.
On hybrid vehicles, the gasoline engine may automatically start, or the
cooling fan may suddenly operate even if the gasoline engine stops. Do
not touch or approach rotating parts such as the fan, which may lead to fin-
gers or clothing (especially a tie, a scarf or a muffler) getting caught,
resulting in serious injury.
Do not loosen the coolant reservoir cap while the hybrid system and radia-
tor are hot.
Serious injuries, such as burns, may result from hot coolant and steam
released under pressure.
6

4248-2. Steps to take in an emergency
NOTICE
When adding engine/power control unit coolant
Wait until the hybrid system has cooled down before adding engine/power
control unit coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot hybrid sys-
tem too quickly can cause damage 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.).
Do not use any coolant additives.

4339-1. Specifications
9
Vehicle specifications
Cooling system
Capacity
(Reference)
Gasoline engine
4.5 L (4.8 qt., 4.0 Imp.qt.)
Power control unit
1.6 L (1.7 qt., 1.4 Imp.qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• A similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and non-
borate coolant with long-life hybrid organic
acid technology
Do not use plain water alone.
Ignition system
Spark plug
MakeDENSO FK16R-A8
Gap0.8 mm (0.031 in.)
NOTICE
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
12-volt battery
Open voltage* at
20C (68F):12.6  12.8 V Fully charged
12.2
 12.4 V Half charged
11 . 8
 12.0 V Discharged
(
*: Voltage is checked 20 minutes after the
hybrid system and all lights are turned off.)
Charging rates 3.5 A max.

454Alphabetical index
Engine
“ACC” position....................... 177
Accessory mode ................... 181
Compartment ........................ 302
Engine switch ................ 176, 180
Hood ..................................... 298
How to start
the hybrid system ....... 176, 180
Identification number............. 429
If your vehicle has to be
stopped in an emergency ... 361
Ignition switch
(power switch) ............ 176, 180
Overheating .......................... 420
Power switch ................. 176, 180
Engine coolant ......................... 306
Capacity ................................ 433
Checking ............................... 306
Preparing and checking
before winter ....................... 222
Engine coolant temperature
warning light .......................... 370
Engine oil.................................. 303
Capacity ................................ 431
Checking ............................... 303
Oil pressure warning light ..... 369
Preparing and checking
before winter ....................... 222Engine switch .................. 176, 180
Auto power off function ......... 182
Changing the power switch
modes................................. 181
If your vehicle has to be stopped
in an emergency ................. 361
Starting the hybrid
system ........................ 176, 180
EPS (Electric Power
Steering)................................. 213
Function ................................ 213
Warning light ......................... 371
EV drive mode.......................... 186
EV indicator................................ 75
Flat tire.............................. 379, 394
Floor mats .................................. 28
Fluid
Brake .................................... 434
Transmission ........................ 434
Washer ................................. 308
Fog lights ................................. 198
Replacing light bulbs..... 347, 355
Switch ................................... 198
Wattage ................................ 437
Follow me home system ......... 194
Front passenger’s seat belt
reminder light ........................ 372
Front position lights ................ 193
Light switch ........................... 193
Replacing light bulbs..... 349, 356
Wattage ................................ 437
F