2013 TOYOTA YARIS HYBRID coolant temperature

477 4-3. Do-it-yourself maintenance
4
Maintenance and care
YARIS_F (including HV)_WE_52D27E
Coolant selection
Only use “Toyota Super Long Life Coolant” 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%
deionized water. (Minimum temperature: -35C [-31F])
For more details about engine coolant, contact any authorized Toyota dealer
or repairer, or another duly qualified and equipped professional.
If the coolant level drops within a short time of replenishing
Except hybrid vehicle: Visually check the radiator, hoses, engine coolant res-
ervoir cap, drain cock and water pump.
Hybrid vehicle: 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.
CAUTION
When the engine is hot (except hybrid vehicle)
Do not remove the radiator cap (gasoline engine), or the engine coolant res-
ervoir cap (diesel engine).
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
When the hybrid system is hot (hybrid vehicle)
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.

5
559
5-1. Essential information
When trouble arises
YARIS_F (including HV)_WE_52D27E
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional as
soon as possible.
Visible symptoms
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
Except hybrid vehicle: Low engine coolant temperature indi-
cator comes on or does not come on continuously
Audible symptoms
Changes in exhaust sound
Excessive tire squeal when cornering
Strange noises related to the suspension system
Except hybrid vehicle: Pinging or other noises related to the
engine
Hybrid vehicle: Pinging or other noises related to the hybrid
system
Operational symptoms
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

562 5-2. Steps to take in an emergency
YARIS_F (including HV)_WE_52D27E
Stop the vehicle immediately.
The following warnings indicate the possibility of damage to the
vehicle that may lead to an accident. Immediately stop the vehicle
in a safe place and contact any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system.
Low engine oil pressure warning light
Indicates that the engine oil pressure is too low.
(Flashes or
comes on)High engine coolant temperature warning light
Indicates that the engine is overheating. (P. 632, 636)
• Flashes: Engine is overheating. Drive carefully.
• Comes on: Engine is overheated. Stop the vehicle.
Hybrid system warning light and warning buzzer
(hybrid vehicle)
Indicates a malfunction in the hybrid system.

632
5-2. Steps to take in an emergency
YARIS_F (including HV)_WE_52D27E
If your vehicle overheats (except hybrid vehicle)
Correction procedures
Stop the vehicle in a safe place and turn off the air condition-
ing system, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down sufficiently, inspect the
hoses and radiator core (radiator) for any leaks.
Gasoline engine
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact any autho-
rized Toyota dealer or repairer, or
another duly qualified and
equipped professional.
The following may indicate that your vehicle is overheating.
The high engine coolant temperature warning light (P. 562)
comes on or flashes, or a loss of engine power is experienced.
(For example, the vehicle speed does not increase.)
Steam comes out from under the hood.

634 5-2. Steps to take in an emergency
YARIS_F (including HV)_WE_52D27EAdd coolant if necessary.
Water can be used in an emergency if coolant is unavailable.
Gasoline engine
Diesel engine
Start the engine and turn the air conditioning system on to
check that the radiator cooling fan operates and to check for
coolant leaks from the radiator or hoses.
The fan operates when the air conditioning 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.)

636
5-2. Steps to take in an emergency
YARIS_F (including HV)_WE_52D27E
If your vehicle overheats (hybrid vehicle)
Correction procedures
If the high engine coolant temperature warning light comes on
or flashes
Stop the vehicle in a safe place and turn off the air condition-
ing 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 radiator core
(radiator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact any autho-
rized Toyota dealer or repairer, or
another duly qualified and
equipped professional.
The following may indicate that your vehicle is overheating.
The high engine coolant temperature warning light (P. 562)
comes on or flashes, or a loss of hybrid system power is experi-
enced. (For example, the vehicle speed does not increase.)
The hybrid system overheat warning light (P. 567) comes on.
Steam comes out from under the hood.

5
637 5-2. Steps to take in an emergency
When trouble arises
YARIS_F (including HV)_WE_52D27EThe coolant level is satisfactory if
it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and turn the air conditioning system
on to check that the radiator cooling fan operates and to
check for coolant leaks from the radiator or hoses.
The fan operates when the air conditioning 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.)
If the fan is not operating:
Stop the hybrid system immediately and contact any autho-
rized Toyota dealer or repairer, or another duly qualified and
equipped professional.
If the fan is operating:
Have the vehicle inspected at the nearest authorized Toy-
ota dealer or repairer, or another duly qualified and
equipped professional.

693 Alphabetical index
YARIS_F (including HV)_WE_52D27E
Brake assist system .............. 564
Brake system ........................ 561
Charging system ................... 562
Clutch .................................... 562
Cruise control indicator
light ..................................... 564
DPF system .......................... 566
Electric power steering.......... 564
Electronic engine control
system ................................ 564
Engine oil maintenance......... 566
Fuel filter ............................... 564
High engine coolant
temperature ........................ 562
Hybrid system ....................... 562
Hybrid system overheat ........ 566
Low engine oil level............... 566
Low engine oil pressure ........ 562
Low fuel level ........................ 566
Low traction battery............... 564
Malfunction indicator lamp .... 564
Multi-mode manual
transmission ....................... 562
Open door ............................. 566
P position request
indicator light ...................... 566
Pretensioners ........................ 564
Seat belt reminder light ......... 566
Slip indicator light .................. 564
Smart entry & start
system ........................ 564, 571
SRS airbags .......................... 564
Stop & Start indicator light .... 564
Washer
Checking ............................... 482
Preparing and checking
before winter ....................... 336
Switch ........................... 302, 307
Washing and waxing ............... 444
Weight ....................................... 650Wheels ...................................... 496
Window glasses ...................... 147
Window lock switch ................ 147
Windows
Power windows ..................... 147
Rear window defogger .......... 372
Washer ......................... 302, 307
Windshield wiper ..................... 302
Wireless remote control key
Locking/Unlocking................. 105
Replacing the battery ............ 501
Wireless remote control ........ 105
WMA disc ................................. 388
*: Refer to ““touch screen” Owner’s Manual”.