Page 549 of 624

5498-2. Steps to take in an emergency
PRIUS v_OM_OM47B23U_(U)
8
When trouble arises
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 your Toyota dealer.
If the hybrid system overheat wa rning 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 your Toyota dealer.
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.
6
Page 550 of 624
5508-2. Steps to take in an emergency
PRIUS v_OM_OM47B23U_(U)
NOTICE
■When adding engine/power control unit coolant
Add coolant slowly after the hybrid system has cooled down sufficiently.
Adding cool coolant to a hot hybrid system too quickly can cause damage to
the hybrid system.
■ To prevent damage to the cooling system
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.).
● Do not use any coolant additive.
Page 559 of 624
PRIUS v_OM_OM47B23U_(U)
5599-1. Specifications
9
Vehicle specifications
Cooling system
Capacity
Gasoline
engine7.3 qt. (6.9 L, 6.1 Imp.qt.)
Power
control unit2.9 qt. (2.7 L, 2.4 Imp.qt.)
Coolant type
Use either of the following:• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol- based non-silicate, non-amine, non-
nitrite, and non-borate coolant with
long-life hybrid organic acid technology
Do not use plain water alone.
Ignition system (spark plug)
MakeDENSO SC20HR11 or SC16HR11
Gap0.043 in. (1.1 mm)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
12-volt battery
Open voltage at 68 F (20 C):
12.0 V or higher
If the voltage is lower than the standard
value, charge the battery.
(Voltage is checked 30 seconds after the
hybrid system and all lights are turned off.)
Charging rates4.2 A max.
Page 583 of 624
PRIUS v_OM_OM47B23U_(U)
5839-2. Customization
9
Vehicle specifications
■Automatic air conditioning system (P. 366)
■Panoramic roof shades* ( P. 391)
*: If equipped
■
Seat belt reminder ( P. 496)
■Reverse buzzer ( P. 185)
FunctionDefault
settingCustomized setting
A/C auto switching oper-
ationOffOn–OO
Heating/cooling opera-
tion minimized in Eco
drive mode
OnOff––O
Switching between out-
side air and recirculated
air mode linked to A/C
auto switch operation
OnOff––O
123
FunctionDefault
settingCustomized setting
Door lock linked auto-
matic closing functionOnOff––O
123
FunctionDefault settingCustomized setting
Vehicle speed linked
seat belt reminder
buzzer
OnOff––O
123
FunctionDefault settingCustomized setting
Signal (buzzer) when the
shift position is in RIntermittentSingle––O
123
Page 609 of 624

609Alphabetical index
PRIUS v_OM_OM47B23U_(U)
Child-protectors....................... 123
CleaningAluminum wheels.................. 409
Exterior ................................. 408
Interior................................... 412
Panoramic roof ..................... 411
Radar sensor ................ 228, 260
Seat belts .............................. 413
Climate remote control ........... 373
Clock ................................... 92, 388
Condenser ................................ 436
Console box ............................. 379
Coolant Capacity ................................ 559
Checking ............................... 434
Preparing and checking before winter....................... 265
Cooling system ........................ 434 Hybrid system overheating......................... 546
Consumption screen ............... 108
Cruise control Cruise control........................ 212
Dynamic radar cruise
control................................. 216
Warning messages ............... 509
Cup holders.............................. 380
Curtain shield airbags ............... 41
Customizable features ............ 577 Daytime running light
system.................................... 194
Defogger Outside rear view mirrors ..... 368
Rear window ......................... 368
Windshield ............................ 368
Dimension ................................ 554
Dinghy towing.......................... 173
Display Drive information .................. 102
Dynamic radar cruise control ................................ 216
Energy monitor ............. 102, 108
LDA (Lane Departure Alert)................................... 229
Multi-information display ....... 100
Trip information....................... 94
Warning messages ............... 506
Do-it-yourself maintenance .... 422
Door courtesy lights ............... 375 Location ................................ 375
Wattage ................................ 562D
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