Page 545 of 621

5448-2. Steps to take in an emergency
PRIUS v_OM_OM47887U_(U)
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 556 of 621
PRIUS v_OM_OM47887U_(U)
5559-1. 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
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):
12.5 V or higher: Fully charged
11.0 — 12.4 V: Half charged
10.9 V or lower: Discharged
(Voltage is checked 30 seconds after the
hybrid system and all lights are turned off.)
Charging rates4.2 A max.
Page 607 of 621

606Alphabetical index
PRIUS v_OM_OM47887U_(U)
If you have a flat tire ............. 518
If you lose your keys ............. 119
If you think something is wrong .............................. 487
If your vehicle becomes
stuck ................................... 546
If your vehicle has to be stopped in an emergency ... 481
If your vehicle needs to be towed .................................. 482
If your vehicle overheats ....... 541
Energy monitor ................ 102, 108
Engine Accessory mode ................... 174
Compartment ........................ 423
Engine switch........................ 172
Exhaust gas precautions ........ 72
Hood ..................................... 419
How to start the hybrid system ......... ....................... 172
Identification number ............ 552
If the hybrid system will not start .............................. 532
If your vehicle has to be stopped in an emergency ... 481
Ignition switch (power switch) .................... 172
Overheating .......................... 541
Power switch......................... 172 Engine coolant
Capacity................................ 555
Checking............................... 429
Preparing and checking before winter ...................... 261
Engine coolant temperature warning light.......................... 491
Engine oil
Capacity................................ 553
Checking............................... 425
Oil pressure warning light ..... 488
Preparing and checking before winter ...................... 261
Engine switch .......................... 172
Auto power off function ......... 174
Changing the power switch modes ..................... 174
If your vehicle has to be stopped in an emergency ... 481
Starting the hybrid system .... 172
Engine switch light (power switch light) .............. 371
EPS
(Electronic Power Steering) Function ................................ 244
Warning light......................... 489
EV indicator ............................... 96
EV drive mode ......................... 177
Event data recorder (EDR)........ 11
Exhaust gas precautions .......... 72