2014 TOYOTA PRIUS engine overheat

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PRIUS_OM_OM47857U_DVD_(U)
4-1. Maintenance and careCleaning and protecting the vehicle exterior............ 402
Cleaning and protecting the vehicle interior............. 405
4-2. Maintenance Maintenance requirements ..................... 408
General maintenance.......... 411
Emission inspection and maintenance (I/M)
programs........................... 415
4-3. Do-it-yourself maintenance Do-it-yourself service precautions ....................... 416
Hood ................................... 419
Positioning a floor jack ........ 422
Engine compartment ........... 425
12-volt battery ..................... 437
Tires .................................... 443
Tire inflation pressure ......... 453
Wheels ................................ 457
Electronic key battery.......... 460
Checking and replacing fuses ................................. 462
Light bulbs........................... 473 5-1. Essential information
Emergency flashers............ 490
If your vehicle needs to be towed....................... 491
If you think something is wrong ............................ 498
5-2. Steps to take in an emergency If a warning light turns on or a warning buzzer
sounds.............................. 499
If a warning message is displayed ...................... 513
If you have a flat tire ........... 530
If the hybrid system will not start ...................... 545
If you lose your keys........... 547
If the electronic key does not operate properly ......... 548
If the 12-volt battery is discharged .................... 550
If your vehicle overheats .... 556
If the vehicle becomes stuck ................................. 561
If your vehicle has to be stopped in
an emergency .................. 563
4Maintenance and care5When trouble arises

186 2-1. Driving procedures
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CAUTION
●If the smell of exhaust is noticed inside the vehicle, open the windows and
check that the back door is closed. Large amounts of exhaust in the vehi-
cle can cause driver drowsiness and an accident, resulting in death or a
serious health hazard. Have the vehicle inspected by your Toyota dealer
immediately.
● Do not shift the shift position to P while the vehicle is moving.
Doing so can damage the transmission and may result in a loss of vehicle\
control.
● Do not shift the shift position to R while the vehicle is moving forward.
Doing so can damage the transmission and may result in a loss of vehicle\
control.
● Do not shift the shift position to D while the vehicle is moving backward.
Doing so can damage the transmission and may result in a loss of vehicle\
control.
● Moving the shift position to N while the vehicle is moving will disengage
the hybrid system. Engine braking is not available with the hybrid system
disengaged.
● During normal driving, do not turn off the hybrid system. Turning the hybrid
system off while driving will not cause loss of steering or braking control,
however, power assist to the steering will be lost. This will make it more
difficult to steer smoothly, so you should pull over and stop the vehicle as
soon as it is safe to do so.
In the event of an emergency, such as if it becomes impossible to stop the
vehicle in the normal way: P. 563
● Use engine braking (shift position B instead of shift position D) to maintain
a safe speed when driving down a steep hill.
Using the brakes continuously may cause the brakes to overheat and lose
effectiveness. ( P. 204)

189
2-1. Driving procedures
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When driving
CAUTION
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If the vehicle is stopped on an incline, in order to prevent accidents caused
by the vehicle rolling forward or backward, always depress the brake pedal
and securely apply the parking brake as needed.
● Avoid revving or racing the engine.
Running the engine at high speed while the vehicle is stopped may cause
the exhaust system to overheat, which could result in a fire if combustible
material is nearby.
■ When the vehicle is parked
●Make sure to firmly apply the parking brake and shift the shift position to P.
Failure to do so may cause the vehicle to move, or the vehicle to acceler-
ate suddenly if the accelerator pedal is accidentally depressed. Also, when
leaving the vehicle, make sure to turn off the hybrid system and lock the
vehicle.
Sound or shuddering may not be noticed even when the hybrid vehicle is
ready to drive (when the “READY” indicator is illuminated).
● Do not leave glasses, cigarette lighters, spray cans, or soft drink cans in
the vehicle when it is in the sun.
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may lead to a
fire.
• The temperature inside the vehicle may cause the plastic lenses and plastic material of glasses to deform or crack.
• Soft drink cans may fracture, causing the contents to spray over the interior of the vehicle, and may also cause a short circuit in the vehi-
cle’s electrical components.

220 2-2. Instrument cluster
PRIUS_OM_OM47857U_DVD_(U)
CAUTION
■To prevent an accident
NOTICE
■To prevent damage to the engine and its components
The engine may be overheating if the high coolant temperature warning light
comes on or flashes. In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. ( P. 556)
Do not place anything or attach a sticker
in front of the instrument cluster. The item
may obscure or obstruct the display, or
could reflect off the display, possibly
causing an accident.Instrument cluster

302 2-4. Using other driving systems
PRIUS_OM_OM47857U_DVD_(U)
■Sounds and vibrati ons caused by the ABS, brake assist, VSC and
TRAC
● A sound may be heard from the engine compartment when the hybrid
system is started, just after the vehicle begins to move, if the brake pedal
is depressed forcefully or repeatedly, or 1-2 minutes after the hybrid sys-
tem is stopped. This sound does not indicate that a malfunction has
occurred in any of these systems.
● Any of the following conditions may occur when the above systems are
operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
■ EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may
be heard. This does not indicate a malfunction.
■ Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from
overheating when there is frequent steering input over an extended period of
time. The steering wheel may feel heavy as a result.
* Should this occur,
refrain from excessive steering input or stop the vehicle and turn the hybrid
system off. The EPS system should return to normal within 10 minutes.
*: If the LKA (Lane-Keeping Assist) system (if equipped) cannot operate in this case, a warning message will be shown on the multi-information dis-
play.
■ Electric power steering system wa rning light (warning buzzer)
P. 507

626 Alphabetical index
PRIUS_OM_OM47857U_DVD_(U)
Child safetyAirbag precautions ................150
Back door precautions ............97
Child restraint system............ 162
Child-protectors .......................90
How your child should wear the seat belt ........................ 113
Installing child restraints ........ 167
Power window lock switch..... 126
Power window precautions ... 128
Removed electronic key battery precautions ......................... 461
Seat belt extender precautions ......................... 118
Seat belt precautions ............ 114
Seat heater precautions ........ 374
12-volt battery precautions .... 440
Child-protectors .........................90
Cleaning
Exterior .................................. 402
Interior ................................... 405
Seat belts .............................. 406
Clock ......................................... 232
Condenser ................................ 432
Console box ............................. 363
Cooling system Engine overheating ............... 556
Hybrid system overheating.... 556
Cruise control Cruise control ........................ 268
Dynamic radar cruise control ................................. 272
Cup holders .............................. 364
Curtain shield airbags ............. 142
Customizable features............. 596 Daytime running light
system .................................... 255
Deck board ............................... 379
Defogger
Rear window ......................... 350
Side mirrors........................... 350
Dimensions .............................. 566
Dinghy towing .......................... 327
Display Dynamic radar cruise control ................................. 272
Multi-information ................... 225
Warning messages ............... 513
Do-it-yourself maintenance .... 416
Door lock Back door ................................ 95
Side doors ............................... 89
Smart key system .. ................. 63
Wireless remote control .......... 87
Doors Back door ................................ 95
Door glasses ......................... 126
Door lock ..................... 63, 87, 89
Rear door child-protector ........ 90
Side doors ............................... 89
Driver’s seat belt reminder light ......................................... 504
Driving
Break-in tips .......................... 183
Correct posture ..................... 140
Procedures............................ 182
Winter driving tips ................. 321D

627
Alphabetical index
PRIUS_OM_OM47857U_DVD_(U)
Eco drive mode switch ........... 206
Electric power steering........... 300
Electronic key
If the electronic key does not operate properly ................. 548
Replacing battery ................. 460
Emergency, in case of If a warning buzzer sounds ............................... 499
If a warning light turns on ..... 499
If the electronic key does not operate properly ................. 548
If the hybrid system will not start .................................... 545
If the 12-volt battery is
discharged ......................... 550
If you have a flat tire ............ 530
If you lose your keys............. 547
If you think something is wrong ................................. 498
If your vehicle becomes stuck................................... 561
If your vehicle has to be stopped in an
emergency ......................... 563
If your vehicle needs to be towed ................................. 491
If your vehicle overheats ...... 556
Emergency flashers Switch ................................... 490 Engine
Accessory mode....................196
Compartment ........................425
Hood......................................419
How to start the hybrid system ................................194
Identification number .............567
If the hybrid system will not start .....................................545
Ignition switch........................194
Overheating...........................556
“POWER” switch ...................194
Engine coolant Capacity ................................572
Checking ...............................430
Preparing and checking before winter .......................321
Engine/power control
unit coolantCapacity ................................572
Checking ...............................430
Preparing and checking before winter .......................321
Engine oil Capacity ................................569
Checking ...............................426
Preparing and checking before winter .......................321
Enhanced VSC .........................300
EPS ............................................300
EV drive mode switch ..............201
Event data recorder ...................25E

630 Alphabetical index
PRIUS_OM_OM47857U_DVD_(U)
MaintenanceDo-it-yourself maintenance ....................... 416
General maintenance ............ 411
Maintenance data.................. 566
Maintenance requirements.... 408
Maintenance data ..................... 409
Meter Instrument panel light
control ................................. 219
Meters ................................... 216
Speed unit select button........ 218
Trip information display ......... 231
Micro dust and pollen filter ..... 334
Microphone
*............................ 393
Mirrors Inside rear view mirror........... 120
Side mirror heater ................. 350
Side mirrors ........................... 124
Vanity mirrors ........................ 369
MP3 disc
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Multi-information display ........ 225
Navigation system (refer to “NAVIGATION
SYSTEM OWNER’S MANUAL”)
Noise from under vehicle ..........22
Odometer .................................. 225
Oil
Engine oil .............................. 426
Opener
Back door ................................95
Fuel filler door ....................... 134
Hood...................................... 419
Outside rear view mirrors Adjusting and folding ............. 124
Outside rear view mirror
defogger switch ..................... 350 Outside temperature
display .................................... 370
Overheating .............................. 556
Parking brake ........................... 214
Parking lights
Switch ................................... 252
PCS ........................................... 307
Personal lights
Switch ................................... 359
Wattage................................. 576
Power outlets ........................... 371
“POWER” switch ..................... 194
Power windows ........................ 126
Pre-collision system ................ 307
Radar cruise control system .................................... 272
Radiator .................................... 432
Radio
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Radio data system*
RDS*
Rear seats Adjustment ............................ 104
Folding down......................... 105
Rear turn signal lights
Replacing light bulbs ............. 473
Wattage................................. 576
Rear view mirror .............. 120, 124
Rear view monitor system
*
Rear window and outside rear view mirror
defoggers ............................... 350
Rear window wiper and washer .................................... 264
Remote Air C onditioning
System.................................... 346
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