2008 TOYOTA PRIUS cooling

404 4-3. Do-it-yourself maintenance
PRIUS_U_(L/O_0802)
*1: Vehicles with halogen headlights (low beam)
*2: Vehicles with discharge headlights (low beam)35 ABS-1 25 A Anti-lock brake system
36 ETCS 10 A Electronic throttle control system
37 BATT FAN 10 A Battery cooling fan
38 HAZ 10 A
Turn signal lights, emergency
flasher
39 DOME 15 A Audio system, interior lights,
Smart key system, gauge and
meter, turn signal lights, luggage
room light, clock
40 ABS MAIN3 15 A Anti-lock brake system
41 ABS MAIN2 10 A Anti-lock brake system
42 ABS MAIN1 10 A Anti-lock brake system
43 FR FOG 15 A Fog lights
44 CHS W/P 10 A CHS W/P
45 AMP 30 A Audio system
46 PTC HTR2 30 A PTC heater
47 PTC HTR1 30 A PTC heater
48 CDS FAN 30 A Electric cooling fan
FuseAmpereCircuit

5
When trouble arises
455
5-2. Steps to take in an emergency
PRIUS_U_(L/O_0802)
NOTICE
■
To prevent damaging the vehicle
● Do not pull- or push-start the vehicle, because the three-way catalytic con-
verter may overheat and become a fire hazard.
● The exclusive jump starting terminal is to be used when charging the 12
volt battery from another vehicle in an emergency. It cannot be used to
jump start another vehicle.
■ When handling jumper cables
Be careful that the jumper cables do not become tangled in the cooling fan
or any of the belts when connecting or disconnecting them.

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

467
6-1. Specifications
6
Vehicle specifications
PRIUS_U_(L/O_0802)
Cooling system
Ignition system
Capacity
Gasoline engine
Power control unit
9.0 qt. (8.6 L, 7.5 lmp.qt.)
2.9 qt. (2.7 L, 2.4 lmp.qt.)
Coolant typeUse 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 organic acid technology
Do not use plain water alone.
Spark plug
Make DENSO NGK SK16R11
IFR5A11
Gap
0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust gap when tuning engine.

501
Alphabetical index
PRIUS_U_(L/O_0802)
Child safety
Airbag precautions ................. 96
Child restraint system ........... 107
Child-protectors ...................... 52
How your child should wear the seatbelt .......................... 67
Installing child restraints ....... 110
Power window lock switch ...... 75
Power window precautions..... 77
Removed electronic key battery precautions ........................ 397
Seat belt precautions.............. 68
Back door ............................... 56
Cleaning Exterior ................................. 346
Interior .................................. 348
Seat belts ............................. 349
Clock ........................................ 331
Condenser ............................... 373
Console box............................. 323
Cooling system Hybrid system overheating ... 456
Cruise control Cruise control ....................... 164
Cup holders ............................. 325
Curtain shield airbags .............. 89
Customizable features ............ 488
Daytime running light system ................................... 151
Defogger Rear window......................... 217
Side mirror ............................ 217
Dimension ................................ 462
Dinghy towing ......................... 182
Display Touch screen........................ 186
Trip information ...................... 27
Do-it-yourself maintenance .... 357
Door courtesy lights ............... 318
Door pocket ............................. 326 Doors
Door lock .....................36, 49, 51
Rear door child protector.........52
Driver’s seat belt reminder light .........................................429
Driving
break-in tips...........................121
Correct posture .......................87
Procedures ............................120
Winter driving tips..................177
Electronic key Replacing battery ..................396
When the electronic key battery is discharged.......................450
Electric Power Steering ...........170
Emergency, in case of
If a warning light turns on ......426
If the electronic key does not operate properly..................450
If the hybrid system will not
start .....................................448
If the 12 volt battery is discharged .........................451
If you have a flat tire .............438
If you lose your keys .............449
If you think something is wrong ..................................423
If your vehicle becomes stuck ...................................459
If your vehicle needs to be towed ..................................416
If your vehicle overheats .......456
Engine Compartment ........................364
Hood......................................361
How to start the hybrid system ................................130
If the hybrid system will
not start ...............................448
Overheating...........................456
“POWER” switch ...................130
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