2008 TOYOTA PRIUS check engine

456
5-2. Steps to take in an emergency
PRIUS_U_(L/O_0802)
If your vehicle overheats
Correction proceduresStop the vehicle in a safe place and turn off the automatic air
conditioning system.
Check to see if steam is coming out from under the hood.
If you see steam: Stop the engine and carefully lift the hood.
If you do not see steam: Leave the engine running and carefully lift the hood.
Remove the engine compartment cover. ( P. 365)
Check to see if the cooling fan is operating.
If the fan is operating: Wait until the engine coolant temperature gauge begins to
fall and then stop the engine.
If the fan is not operating: Stop the hybrid system immediately and call your local Toy-
ota dealer.
After the hybrid system has
cooled down sufficiently, check
the coolant level and inspect the
radiator core (radiator) for any
leaks.
The following may indicate that your vehicle is overheating:
The high engine coolant temperature warning light comes on:
The engine may be overheating.
Follow the correction procedure as described blow.
STEP1
STEP2
STEP3
STEP4
ITY52P018
STEP5

5
When trouble arises
457
5-2. Steps to take in an emergency
PRIUS_U_(L/O_0802)
Add coolant if required.
Water can be used in an emer-
gency measure if coolant is
unavailable. (
P. 467)
Have the vehicle checked at your nearest Toyota dealer as soon as
possible.
ITY52P019
STEP6
■Overheating
In the following situations, your vehicle may be overheating.
● High coolant temperature warning light is displayed on the touch screen.
● Steam is coming from under the hood.
CAUTION
■To prevent an accident or injury when inspecting under the hood of
your vehicle
● Keep hands and clothing away from the fan and engine drive belt while the
engine is running.
● Do not loosen the radiator cap while the engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.

468 6-1. Specifications
PRIUS_U_(L/O_0802)
Electrical system
Transmission
12 volt battery
Open voltage at
68F (20 C): 12.6 
12.8V Fully charged
12.2  12.4V Half charged
11 . 5  11.9V Discharged
(Voltage is checked 20 minutes after
the engine and all lights are turned
off.)
Charging rates 3.5A max.
Fluid capacity
Drain and refill3.8 qt. (3.6 L, 3.2 lmp.qt.)
Fluid type Toyota Genuine ATF WS
NOTICE
■Transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause
deterioration in shift quality, locking up of your transmission accompanied by
vibration, and ultimately damage the transmission of your vehicle.

502 Alphabetical index
PRIUS_U_(L/O_0802)
Engine compartment cover..... 365
Engine/power control unit coolant
Capacity ................................467
Checking ............................... 371
Preparing and checking before winter ....................... 177
Engine oil Capacity ................................466
Checking ............................... 365
Preparing and checking before winter ....................... 177
Engine oil maintenance data ......................................... 369
Event data recorder .................424
Floor mats.................................335
Fluid
Brake .....................................373
Washer .................................. 378
Fog lights
Switch.................................... 156
Wattage .................................471
Front passenger occupant
classification system ............101
Front passenger’s seat belt reminder light.........................429
Front seats Adjustment .............................. 57
Front turn signal lights
Wattage .................................471
Fuel Capacity ................................464
Fuel gauge ............................ 143
Gas station information .........512
Information ............................ 472
Refueling ................................. 78
Type ......................................472
Fuel door.....................................78
Fuel filler door ............................ 78
Fuses......................................... 398 Garage door opener ................ 339
Gas station information .......... 512
Gauges...................................... 143
Glove box ................................. 323
Hands-free system
(for cellular phone) ................ 272
Head restraints........................... 62
Headlights
Discharge headlights precautions ......................... 414
Replacing light bulbs ............. 407
Switch ................................... 150
Wattage................................. 471
Heaters Side mirror ............................ 217
Hood.......................................... 361
Hooks
Cargo .................................... 336
Hybrid system Emergency shut off system..... 27
Energy monitor /
consumption screen ............. 27
High-voltage components ....... 26
Power switch ......................... 130
Illuminated entry system......... 318
Immobilizer system ................... 81
I/M test ...................................... 356
Identification Engine ................................... 463
Vehicle .................................. 463
Ignition switch.......................... 130
Indicator lights ......................... 146
Initialization Items to initialize ................... 491
Inside rear view mirror .............. 71
Instrument panel light control .................................... 144
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