2017 TOYOTA PRIUS coolant temperature

7158-2. Steps to take in an emergency
PRIUS_OM_OM47B54U_(U)
8
When trouble arises
The 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 fans operate and to check for
coolant leaks from th e radiator or hoses.
The fans operate when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fans are operating by checking
the fan sound and air flow. If it is difficult to check these, turn the air con-
ditioning system on and off repeatedly. (The fans may not operate in
freezing temperatures.)
If the fans are not operating:
Stop the hybrid system immediately and contact your Toyota
dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Toyota dealer.
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7178-2. Steps to take in an emergency
PRIUS_OM_OM47B54U_(U)
8
When trouble arises
After stopping the hybrid system and waiting for 5 minutes or
more, start the hybrid system again and check if “Hybrid System
Overheated” is shown on the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact your Toyota dealer.
If the message is not displayed:
The hybrid system temperature has dropped and the vehicle may
be driven normally.
However, if the message appears again frequently, contact your Toyota
dealer.
WARNING
■ To prevent an accident or injury when inspecting under the hood of
your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
● 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.
● After the hybrid system has been turned off, check that the “Accessory”,
“Ignition ON” or mileage display ( →P. 108) on the main display and the
“READY” indicator are off.
When the hybrid system is operating, the gasoline engine may automati-
cally start, or the cooling fans may suddenly operate even if the gasoline
engine stops. Do not touch or approach rotating parts such as the fan,
which may lead to fingers or clothing (especially a tie, a scarf or a muffler)
getting caught, resulting in serious injury.
● Do not loosen the coolant reservoir caps while the hybrid system and radi-
ator are hot.
High temperature steam or coolant could spray out.
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785Alphabetical index
PRIUS_OM_OM47B54U_(U)
High coolant temperature
warning light .......................... 655
High mounted stoplight Replacing .............................. 641
Hill-start assist control............ 403
Hood ......................................... 587
Hooks Cargo hooks ......................... 532
Coat hooks............................ 550
Grocery bag hook ................. 533
Retaining hooks (floor mat)..... 26
Horn .......................................... 192
Hybrid battery (traction battery) Location .................................. 82
Specification ......................... 725
Hybrid battery (traction battery)
air intake vent .......................... 83
Hybrid system ............................ 78 Brake Override System......... 209
Drive-Start Control ................ 210
Emergency shut off system ......... ......................... 83
Energy monitor/consumption
screen......................... 117, 153
EV drive mode ...................... 231
High voltage components ....... 82
Hybrid System Indicator........ 119
Hybrid system precautions ..... 82
Hybrid vehicle driving tips ..... 409
If the hybrid system will not start .............................. 703
Overheating .......................... 714
Power switch......................... 225
Regenerative braking.............. 80
Starting the hybrid system .... 225
Vehicle proximity notification system ................ 79
Hybrid System Indicator ......... 119
Hybrid transmission ................ 234 I/M test ...................................... 583
Identification
Engine .................................. 724
Vehicle .................................. 723
Ignition switch
(Power switch)....................... 225 Auto power off function ......... 227
Changing the power switch modes ..................... 227
If your vehicle has to be stopped in an
emergency ......................... 645
Starting the hybrid system .... 225
Illuminated entry system ........ 525
Immobilizer system ................... 89
Indicators ................................. 100
Initialization
Intelligent Clearance Sonar.................................. 354
Items to initialize ................... 756
Maintenance data ................. 578
Moon roof ............................. 204
Power windows..................... 199
S-APGS (Simple Advanced
Parking Guidance
System) .............................. 382
Tire pressure warning
system .......... ...................... 607
Inside rear view mirror ............ 194
Instrument cluster light control ...................................... 94
Intelligent Clearance Sonar .... 344
Interior lights ........................... 523 Switch ........................... 524, 525
Wattage ................................ 732
Intuitive parking assist ........... 333I

788Alphabetical index
PRIUS_OM_OM47B54U_(U)
Navigation system*
Noise from under vehicle............ 8
Odometer.................................. 109
OilEngine oil .............................. 726
Opener
Fuel filler door ....................... 264
Hood ..................................... 587
Outside rear view mirrors ....... 196
Adjustment ............................ 196
Blind Spot Monitor ................ 320
Folding .................................. 196
Outside rear view mirror defoggers ........................... 515
Outside temperature
display .................................... 108
Overhead console ................... 530
Overheating.............................. 714
Overheating, Engine................ 714 P position switch ..................... 235
Panic mode .............................. 161
Parking assist sensors
Intelligent Clearance Sonar.................................. 344
Intuitive parking assist .......... 333
S-APGS (Simple Advanced Parking Guidance
System) .............................. 357
Parking brake Operation .............................. 241
Parking brake engaged
warning buzzer ................... 241
Parking lights
Light switch ........................... 242
Replacing light bulbs .... 637, 641
Wattage ................................ 732
Parking lock ............................. 235
PCS (Pre-Collision System) Enabling/disabling the
system .......... ...................... 279
Function ................................ 275
Warning light......................... 654
Personal lights......................... 523 Switch ................................... 524
Wattage ................................ 732
Power control unit coolant
Capacity................................ 728
Checking............................... 594
Preparing and checking before winter ...................... 412
Radiator ................................ 596
Power outlets ........................... 541
Power steering (Electric
Power Steering system) ....... 402 Warning light......................... 654
N
O
P

794Alphabetical index
PRIUS_OM_OM47B54U_(U)
Warning buzzersBlind Spot Monitor (BSM) ..... 320
Brake system ....... ................. 653
Downshifting ......................... 236
Lane departure alert ............. 288
Open door ..................... 169, 655
Open moon roof .................... 204
Parking assist sensors ............... 333, 344, 357
Pre-collision warning............. 275
Radar cruise control.............. 307
Seat belt reminder ................ 656
Warning lights ABS....................................... 654
Brake Override System......... 656
Brake system ....... ................. 653
Charging system ................... 653
Drive-Start Control ................ 656
Driver’s seat belt reminder ............................. 656
Electronic engine control system ......... ....................... 653
Electric power steering ......... 654
Front passenger’s seat
belt reminder ...................... 656
High coolant temperature ..... 655
ICS OFF indicator ................. 655
Intelligent Clearance Sonar .................................. 656
LDA system .......................... 657
Low engine oil pressure ........ 653
Low fuel level ........................ 655
Malfunction indicator lamp .... 653
Master warning light.............. 656
Open door ............................. 655
PCS ...................................... 654
Rear passengers’ seat belt
reminder light...................... 656
Seat belt reminder light ......... 656
Slip indicator ......................... 655
SRS ...................................... 654
Tire pressure......................... 656 Warning messages.................. 663
Warning reflector..................... 534
Washer
Checking............................... 602
Preparing and checking before winter ...................... 412
Switch ........................... 254, 260
Washing and waxing ............... 566
Water-repellent coating .......... 567
Weights Cargo capacity...................... 222
Load limits ............................ 722
What to do if... (Troubleshooting) ................. 774
Wheels ...................................... 617 Replacing wheels ................. 670
Size....................................... 730
Window glasses ...................... 198
Window lock switch ................ 198
Windows Power windows..................... 198
Rear window defogger.......... 515
Washer ......................... 254, 260
Windshield wipers ................... 254 Handling the wiper arms ....... 571
Winter driving tips ................... 412
Wiper rubber replacement ...... 623
Wireless charger ..................... 542
Wireless communication ........ 455
Wireless remote control key .......................................... 160 Locking/Unlocking ................ 160
Panic mode........................... 161
Replacing the battery............ 627
WMA disc ................................. 438
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