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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 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 611 of 624

611Alphabetical index
PRIUS v_OM_OM47B23U_(U)
If you have a flat tire ............. 524
If you lose your keys ............. 119
If you think something is wrong .............................. 491
If your vehicle becomes
stuck ................................... 551
If your vehicle has to be stopped in an
emergency.......................... 485
If your vehicle needs to be towed .................................. 486
If your vehicle overheats ....... 546
Energy monitor ................ 102, 108
Engine Accessory mode ................... 177
Compartment ........................ 428
Engine switch........................ 174
Exhaust gas precautions ........ 73
Hood ..................................... 424
How to start the hybrid system ......... ....................... 174
Identification number ............ 556
If the hybrid system will not start .............................. 537
If your vehicle has to be stopped in an
emergency.......................... 485
Ignition switch (power switch) .................... 174
Overheating .......................... 546
Power switch......................... 174 Engine coolant
Capacity................................ 559
Checking............................... 434
Preparing and checking before winter ...................... 265
Engine coolant temperature warning light.......................... 495
Engine oil
Capacity................................ 557
Checking............................... 430
Oil pressure warning light ..... 492
Preparing and checking before winter ...................... 265
Engine switch .......................... 174
Auto power off function ......... 178
Changing the power switch modes ..................... 177
If your vehicle has to be stopped in an
emergency ......................... 485
Starting the hybrid system .... 174
Engine switch light (power switch light) .............. 375
EPS (Electronic Power Steering)Function ................................ 248
Warning light......................... 493
EV indicator ............................... 96
EV drive mode ......................... 181
Event data recorder (EDR)........ 11
Exhaust gas precautions .......... 73