2010 TOYOTA PRIUS overheating

5
When trouble arises
551
5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
If necessary, add power control
unit coolant up to the full line.
Water can be used in an emer-
gency measure if power control
unit coolant is unavailable.

( P. 562)
Have the vehicle checked at nearest Toyota dealer as soon as possi-
ble.
STEP5
■ Overheating
The following symptoms may occur when your vehicle is overheating:
● Hybrid system output decrease.
● Steam is coming from under the hood.

602 Alphabetical index
PRIUS_U (OM47668U) U.S.A.
CareExterior .................................. 404
Interior ...................................407
Seat belts ..............................408
Cargo capacity .........................260
Cargo hooks ............................. 385
CD player/changer ...................303
Chains ....................................... 263
Child-protectors ......................... 68
Child restraint system Booster seats, definition ........ 132
Booster seats, installation ..... 137
Convertible seats, 
definition ............................. 132
Convertible seats, 
installation ...........................137
Front passenger occupant 
classification system ...........126
Infant seats, definition ...........132
Infant seats, installation.........137
Installing child restraint 
system with 
LATCH system....... ............. 138
Installing child restraint 
system with seatbelts.......... 140
Installing child restraint 
system with top straps ........ 144
Child safety
Airbag precautions ................121
Child restraint system............132
Child-protectors ....................... 68
How your child should wear 
the seatbelt ...........................88
Installing child restraints ........ 137
Moon roof precautions .......... 100
Power window lock switch....... 98
Power window precautions .....99
Removed electronic key 
battery precautions ............. 461
Seat belt precautions ..............89
Back door ................................72 Cleaning
Exterior.................................. 404
Interior ................................... 407
Seat belts .............................. 408
Clock ......................................... 201
Condenser ................................ 432
Console box ............................. 369
Cooling system Hybrid system overheating ... 548
Cruise control Cruise control ........................ 214
Dynamic radar 
cruise control ...................... 218
Cup holders .............................. 372
Curtain shield airbags ............. 113
Customizable features ............ 587
Daytime running light 
system .................................... 207
Defogger Rear window ......................... 289
Side mirror ............................ 289
Dimension ................................ 556
Dinghy towing .......................... 267
Display Trip information ..................... 188
Warning messages ............... 508
Do-it-yourself maintenance .... 416
Door courtesy lights ................ 363
Door lock Back door ................................ 72
Side doors ............................... 67
Smart key system .. ................. 43
Wireless remote control .......... 63
Doors Back door ................................ 72
Side doors ............................... 67
Rear door child protector ........ 68C
D

603
Alphabetical index
PRIUS_U (OM47668U) U.S.A.
Driver’s seat belt reminder

light ........................................ 499
Driving
Break-in tips ......................... 151
Correct posture..................... 111
Procedures ........................... 150
Winter driving tips ................. 261
Electric Power Steering .......... 245
Electronic key Replacing battery ................. 460
When the electronic key 
battery is discharged .......... 541
Emergency flashers ............... 486
Emergency, in case of
If a warning buzzer 
sounds ............................... 496
If a warning light turns on ..... 496
If a warning message 
is displayed ........................ 508
If the electronic key does not 
operate properly ................. 541
If the hybrid system will not 
start .................................... 538
If the 12 volt battery is 
discharged ........................ 543
If you have a flat tire ............ 524
If you lose your keys............. 540
If you think something is 
wrong ................................. 493
If your vehicle becomes 
stuck................................... 553
If your vehicle needs to be 
towed ................................. 487
If your vehicle overheats ...... 548 Engine
Compartment ........................425
Hood......................................420
How to start the hybrid 
system ................................162
If the hybrid system will 
not start ...............................538
Ignition switch........................162
Overheating...........................548
“POWER” switch ...................162
Engine oil Capacity ................................560
Checking ...............................426
Preparing and checking 
before winter .......................261
Engine/power control unit coolant Capacity ................................562
Checking ...............................430
Preparing and checking 
before winter .......................261
Engine oil maintenance 
data .........................................428
Enhanced VSC (Vehicle 
Stability Control)....................245
EPS ............................................245
Event data recorder .................494
Floor mats.................................384
Fluid Brake .....................................432
Washer ..................................434
Fog lights Replacing light bulbs .............472
Switch....................................209
Wattage .................................567
Front passenger occupant 
classification system ............126
Front passenger’s seat belt 
reminder light.........................499
Front seats Adjustment ..............................78
E
F

605
Alphabetical index
PRIUS_U (OM47668U) U.S.A.
Keyless entry ............................. 63
Keys
Electronic key ......................... 63
If you lose your keys............. 540
If your electronic key 
battery is discharged .......... 541
Key number plate ................... 42
Keyless entry .......................... 63
Keys ....................................... 41
“POWER” switch .................. 162
Mechanical key....................... 41
Wireless remote control key ... 63
Knee airbag.............................. 113
Lane keeping assist ................ 235
Language Multi-information 
display ................................ 188
License plate lights Replacing light bulbs ............ 472
Wattage ................................ 567
Light bulbs Replacing ............................. 472
Wattage ................................ 567
Lights Emergency flasher switch .... 486
Fog light switch..................... 209
Hazard light switch ............... 486
Headlights switch ................. 206
Interior lights ......................... 363
Replacing light bulbs ............ 472
Turn signal lever ................... 178
Vanity lights .......................... 377
Wattage ................................ 567
LKA ........................................... 235
Load capacity .......................... 260
Luggage compartment light Switch ..................................... 73
Wattage ................................ 567
Luggage cover......................... 385 Maintenance
Do-it-yourself 
maintenance .......................416
General maintenance ............412
Maintenance data..................556
Maintenance 
requirements .......................410
Meter Instrument panel light 
control .................................184
Meters ...................................181
Micro dust and 
pollen filter .............................274
Mirrors Inside rear view mirror.............93
Side mirror heater .................289
Side mirrors .............................96
Vanity mirrors ........................377
Moon roof .................................100
MP3 disc ...................................311
Multi-information display ........188
Noise from under vehicle ..........22
Odometer ..................................181
Oil Engine oil ..............................426
Opener Back door ................................72
Fuel filler door .......................104
Hood......................................420
Outside rear view mirrors
Adjusting and folding ...............96
Outside temperature 
display ....................................378
Overhead console ....................370
Overheating, Hybrid 
system ....................................548K
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