2017 TOYOTA PRIUS PLUS coolant temperature

4577-2. Steps to take in an emergency
PRIUS +_OM_OM47B24E_(EE)
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When trouble arises
If your vehicle overheats
■If the high coolant temperature warning light comes on or
flashesStop the vehicle in a safe place and turn off the air conditioning
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 fans
If a large amount of coolant
leaks, immediately contact
any authorized Toyota dealer
or repairer, or another duly
qualified and equipped pro-
fessional.
The following may indicate that your vehicle is overheating.● The high coolant temperature warning light ( →P. 391) comes on
or flashes, or a loss of hybrid system power is experienced. (For
example, the vehicle speed does not increase.)
● Vehicles without multi-information display: The hybrid system
overheat warning light ( →P. 391) comes on.
● Vehicles with multi-information display: The warning message
indicating overheat is shown on the multi-information display.
(→ P. 403)
● Steam comes out from under the hood.
Correction procedures
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4587-2. Steps to take in an emergency
PRIUS +_OM_OM47B24E_(EE)
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 the radiator or hoses.
The fans operate when the air condi tioning 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 any authorized
Toyota dealer or repairer, or another duly qualified and equipped
professional.
If the fans are operating:
Have the vehicle inspected at the nearest any authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.
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4607-2. Steps to take in an emergency
PRIUS +_OM_OM47B24E_(EE)
After stopping the hybrid system and waiting for 5 minutes or
more, start the hybrid system and check for the instrument clus-
ter or multi-information display.
If the hybrid system overheat warning light does not turn off or
the message does not disappear:
Stop the hybrid system and contact any authorized Toyota dealer
or repairer, or another duly qualified and equipped professional.
If the hybrid system overheat warning light does not come on or
the message is not displayed:
The hybrid system temperature has dropped and the vehicle may
be driven normally.
However, if the warning light comes on again frequently or the message
appears again frequently, contact any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional.
WARNING
■ 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 indicator on the
power switch and the “READY” indicator are off.
When the hybrid system is operating, the gasoline engine may automati-
cally start, or the cooling fan 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 cap while the hybrid system and radia-
tor are hot.
High temperature steam or coolant could spray out.
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494Alphabetical index
PRIUS +_OM_OM47B24E_(EE)
Emergency, in case ofIf a warning buzzer sounds ... 387
If a warning light turns on ...... 387
If a warning message is displayed ............................ 400
If the 12-volt battery is discharged .......................... 452
If the electronic key does not operate properly ................. 450
If the hybrid system will not start..................................... 448
If you have a flat tire...... 417, 431
If you lose your keys ............. 143
If you think something is
wrong.................................. 386
If your vehicle becomes stuck ................................... 462
If your vehicle has to be
stopped in an emergency ... 379
If your vehicle needs to be towed .................................. 380
If your vehicle overheats ....... 457
Energy monitor ........................ 133 Engine
Accessory mode ................... 210
Compartment ........................ 327
Engine switch........................ 207
Exhaust gas precautions ........ 80
Hood ..................................... 323
How to start the hybrid system ................................ 207
Identification number ............ 466
If the hybrid system will not start .................................... 448
If your vehicle has to be
stopped in an emergency ... 379
Ignition switch (power switch) .................... 207
Overheating .......................... 457
Power switch......................... 207
Engine coolant
Capacity ................................ 470
Checking ............................... 333
Preparing and checking before winter....................... 274
Engine coolant temperature warning light .......................... 391

499Alphabetical index
PRIUS +_OM_OM47B24E_(EE)
Navigation system*
Odometer .................................. 113
OilEngine oil .............................. 467
Opener Fuel filler door ....................... 234
Hood ..................................... 323
Outside rear view mirrors ....... 189 Adjustment ............................ 189
Folding .................................. 189
Outside rear view mirror defoggers............................ 283
Outside temperature display .................................... 285
Overhead console.................... 297
Overheating .............................. 457
Overheating, Engine ................ 457 P position switch ..................... 217
Parking brake
Operation .............................. 222
Parking brake engaged warning buzzer ................... 393
Parking lock ............................. 217
PCS (Pre-Crash Safety system) Function ................................ 262
PCS switch ........................... 263
Warning light ......................... 389
Warning message ......... 403, 403
Personal lights ......................... 290 Switch ................................... 291
Wattage ................................ 474
Pollen removal mode .............. 283
Power control unit coolant
Capacity ................................ 470
Checking ............................... 333
Preparing and checking before winter....................... 274
Radiator ................................ 334
Power outlets ........................... 304
Power steering (Electric Power Steering system) ....... 256Warning light ......................... 388
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*: Refer to the “Navigation and multimedia system Owner’s Manual”.

504Alphabetical index
PRIUS +_OM_OM47B24E_(EE)
USB memory*
USB port*
Vanity lightsVanity lights........................... 302
Wattage................................. 474
Vanity mirrors .......................... 302 Vanity lights........................... 302
Wattage................................. 474
Vehicle identification number ................................... 465
Vehicle Stability Control (VSC)....................................... 256
VSC (Vehicle Stability Control) .................................. 256
Warning buzzers Approach warning ................. 246
Brake system ........................ 387
Downshifting ......................... 218
Driver’s seat belt reminder .... 392
Front passenger’s seat belt reminder ............................. 392
Open door ............................. 391
Pre-crash warning ................. 262
Radar cruise control .............. 246
Seat belt reminder................. 392 Warning lights
ABS....................................... 388
Automatic headlight leveling system ................................ 391
Brake system ........................ 387
Charging system ................... 387
Cruise control........................ 391
Driver’s seat belt reminder .... 392
Electronic engine control
system ................................ 388
Electric power steering ......... 388
Front passenger’s seat belt reminder ............................. 392
Go to service......................... 393
High coolant temperature ..... 391
Hybrid battery indicator ......... 390
Hybrid system ....................... 388
Hybrid system overheat ........ 391
LED headlight ....................... 390
Low engine oil pressure ........ 388
Low fuel level ........................ 391
Low hybrid battery (traction battery) ................. 391
Malfunction indicator lamp .... 388
Master warning light.............. 392
Open door ............................. 391
Parking lock system ...... 389, 390
P position request
indicator.............................. 390
PCS ...................................... 389
Rear passenger’s seat belt
reminder ............................. 392
Seat belt reminder light ......... 392
Slip indicator ......................... 389
SRS ...................................... 388
Tire pressure......................... 392
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