2012 TOYOTA YARIS HYBRID engine overheat

5
637 5-2. Steps to take in an emergency
When trouble arises
YARIS_F (including HV)_WE_52C79E
Overheating
If you observe the following, your vehicle may be overheating:
The high engine coolant temperature warning light flashes or comes on
or a loss of power is experienced.
Steam comes out from under the hood.
CAUTION
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.
Keep hands and clothing away from the fan and drive belt while the engine
is running.
Do not loosen the radiator cap, or the coolant reservoir cap while the
engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
Diesel engine
Have the vehicle inspected at the nearest authorized Toyota dealer
or repairer, or another duly qualified and equipped professional as
soon as possible.

5
639
5-2. Steps to take in an emergency
When trouble arises
YARIS_F (including HV)_WE_52C79E
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.
Check to see if steam is coming out from the engine area.
If you see steam:
Stop the hybrid system. Carefully lift the hood after the steam
subsides and then restart the hybrid system.
If you do not see steam:
Leave the hybrid system operating and carefully lift the hood.
Check to see if the cooling fan is operating.
If the fan is operating:
Wait until the high engine coolant temperature warning light
goes off and then stop the hybrid system.
If the fan is not operating:
Stop the hybrid system immediately and call any authorized
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 comes on or
flashes:
The engine may be overheating.
If the hybrid system overheat warning light comes on:
The power control unit may be overheating.
Follow the correction procedure as described below.

640 5-2. Steps to take in an emergency
YARIS_F (including HV)_WE_52C79EAfter the hybrid system has
cooled down sufficiently, check
the engine coolant level and
inspect the cooling system for
leaks.
Add engine coolant if necessary.
Water can be used in an emer-
gency if engine coolant is unavail-
able. (P. 667)
Have the vehicle inspected at the nearest authorized Toyota dealer or
repairer, or another duly qualified and equipped professional as soon
as possible.
If the hybrid system overheat warning light comes on
Stop the vehicle in a safe place and turn off the air condition-
ing system.
Leave the hybrid system operating and carefully lift the hood.

642 5-2. Steps to take in an emergency
YARIS_F (including HV)_WE_52C79E
Overheating
The following symptoms may occur when your vehicle is overheating:
Hybrid system output decreases.
Steam comes out from the engine area.
CAUTION
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.
For vehicles with a hybrid system, there are times when the gasoline
engine automatically starts to run or the cooling fan suddenly start to oper-
ate. Do not touch or approach the rotating parts of the belt or fan. Doing so
may lead to fingers, clothes or tools getting caught, resulting in 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.

646 5-2. Steps to take in an emergency
YARIS_F (including HV)_WE_52C79E
NOTICE
When restarting the engine
Do not crank the engine before refueling and operating the priming pump.
This may damage the engine and fuel system.
Vehicles without a smart entry & start system: Do not crank the engine for
more than 30 seconds at a time. This may overheat the starter and wiring
system.
Start the engine. (P. 224, 228)
If the engine does not start after the above steps have been per-
formed, wait for 10 seconds and then try steps 3 and 5 again. If
the engine still does not start, contact any authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.
After starting the engine, depress the accelerator pedal lightly until
the engine runs smoothly.

688 Alphabetical index
YARIS_F (including HV)_WE_52C79E
Brake
Fluid ...................................... 671
Parking brake ........................ 271
Brake assist.............................. 326
Break-in tips ............................. 209
Brightness control
Instrument panel light
control ................................. 291
Care
Exterior.................................. 446
Interior ................................... 451
Seat belts .............................. 452
CD player .................................. 385
Chains ....................................... 338
Child-protectors ....................... 117
Child restraint system
Baby seats, definition ............ 181
Baby seats, installation ......... 190
Child seats, definition ............ 181
Child seats, installation ......... 190
Installing CRS with ISOFIX
rigid anchors ....................... 194
Installing CRS with seat
belts .................................... 191
Installing CRS with top
straps .................................. 195
Junior seats, definition .......... 181
Junior seats, installation........ 190Child safety
Airbag precautions ................ 172
Battery precautions ....... 484, 629
Child-protectors .................... 117
Child restraint system ........... 181
How your child should wear
the seat belt ........................ 136
Installing child restraints ....... 190
Power window lock switch .... 147
Power window precautions ... 150
Removed key battery
precautions ......................... 509
Seat belt precautions ............ 137
Seat heater
precautions ......................... 435
12-volt battery
precautions ................. 492, 634
Cigarette lighter ....................... 431
Cleaning
Exterior ................................. 446
Interior................................... 451
Seat belts .............................. 452
Clock ......................................... 428
Condenser ................................ 481
Cooling system
Engine overheating ............... 635
Hybrid system overheating ... 639
Cruise control
Cruise control........................ 311
Indicator ................................ 311
Cup holders.............................. 422
Curtain shield airbags ............. 166
Customizable features ............ 682
C

689 Alphabetical index
YARIS_F (including HV)_WE_52C79E
Daytime running light
system .................................... 297
Deck board ............................... 441
Defogger
Rear window ......................... 374
Side mirror ............................ 374
Dimension ................................ 654
Display
Trip information ..................... 286
Do-it-yourself maintenance .... 457
Doors
Back door .............................. 119
Door glasses ......................... 147
Door lock ................. 69, 105, 114
Double locking system .......... 162
Side doors ............................. 114
Side mirrors........................... 144
Double locking system............ 162
DPF
Diesel Particulate Filter
system ................................ 334
Warning light ......................... 570
Driver’s seat belt reminder
light ......................................... 570
Driving
Break-in tips .......................... 209
Correct posture ..................... 164
Procedures............................ 204
Winter driving tips ................. 338Electric power steering ........... 326
Electronic key
If the electronic key does
not operate properly ........... 619
Replacing the battery ............ 505
Emergency flashers
Switch ................................... 552
Emergency, in case of
If the electronic key does not
operate properly ................. 619
If the engine will not start ...... 611
If the hybrid system will
not start .............................. 614
If the shift lever cannot be
shifted ................................. 617
If the shift lever cannot be
shifted from P ..................... 616
If the vehicle has a
discharged battery .............. 624
If the vehicle has a
discharged 12-volt
battery ................................ 631
If the warning buzzer
sounds ................................ 565
If the warning light
turns on .............................. 565
If you have a flat tire .... 582, 594
If you lose your keys ............. 618
If you run out of fuel and
the engine stalls ................. 644
If you think something is
wrong.................................. 563
If your vehicle becomes
stuck ................................... 647
If your vehicle has to be
stopped in an
emergency.......................... 650
If your vehicle needs to be
towed .................................. 553
If your vehicle
overheats.................... 635, 639DE

690 Alphabetical index
YARIS_F (including HV)_WE_52C79E
Emergency tire puncture
repair kit ................................. 594
Engine
Compartment ........................ 467
Engine switch ........ 224, 228, 238
Hood ..................................... 462
How to start the
engine ......................... 224, 228
How to start the hybrid
system ........................ 238, 243
Identification number............. 656
If the engine will not start ...... 611
If the hybrid system
will not start......................... 614
If you run out of fuel and
the engine stalls.................. 644
Ignition
switch.......... 224, 228, 238, 243
Overheating .................. 635, 639
“POWER” switch ................... 243
Engine coolant
Capacity ................................ 667
Checking ............................... 478
Preparing and checking
before winter ....................... 338
Engine immobilizer system .... 155
Engine oil
Capacity ................................ 662
Checking ............................... 471
Preparing and checking
before winter ....................... 338Engine/power control unit
coolant
Capacity ................................ 667
Checking ............................... 479
Preparing and checking
before winter....................... 338
“ENGINE START STOP”
switch light ............................ 417
EPS ........................................... 326
EV drive mode.......................... 250
Event data recorder ................... 41
Floor mat .................................. 439
Fluid
Washer ................................. 485
Fog lights
Replacing light bulbs............. 535
Switch ................................... 302
Wattage ................................ 677
Front fog lights
Replacing light bulbs............. 535
Switch ................................... 302
Wattage ................................ 677
Front passenger’s seat belt
reminder light ........................ 570
Front position lights
Replacing light bulbs............. 535
Switch ................................... 293
Wattage ................................ 677
Front seats
Adjustment ............................ 124
Front turn signal lights
Replacing light bulbs............. 535
Switch ................................... 269
Wattage ................................ 677
F