engine overheat TOYOTA PRIUS 2009 2.G Owners Manual

126 2-1. Driving procedures
PRIUS_U_(OM47614U)
CAUTION
■When driving the vehicle
● Do not under any circumstances shift the shift lever to “R”, “N” or push the
“P” position switch while the vehicle is moving.
Doing so can cause significant damage to the transmission and may result
in a loss of vehicle control.
● Do not shift the shift lever to “N” while the vehicle is moving.
Doing so may cause the engine brake not to operate properly and lead to
an accident.
● Do not turn the hybrid system off while driving.
The power steering and brake actuator will not operate properly if the
hybrid system is not operating.
● Use engine braking (“B”) to maintain a safe speed when driving down a
steep hill.
Using the brakes continuously may cause the brakes to overheat and lose
effectiveness. ( P. 138)
● When stopped on an inclined surface, use the brake pedal and parking
brake to prevent the vehicle from rolling backward or forward and causing
an accident.
● Do not adjust the position of the steering wheel, the seat, or the inside or
outside rear view mirrors while driving.
Doing so may result in a loss of vehicle control that can cause accidents
that may result in death or serious injury.
● Always check that all passengers’ arms, heads or other parts of their bod-
ies are not outside the vehicle, as this may result in death or serious injury.
● Do not drive in excess of the speed limit. Even if the legal speed limit per-
mits it, do not drive over 85 mph (140 km/h) unless your vehicle has high
speed capability tires. Driving over 85 mph (140 km/h) may result in tire
failure, loss of control and possible injury. Be sure to consult a tire dealer
to determine whether the tires on your vehicle are high-speed capability
tires or not before driving at such speeds.

454
5-2. Steps to take in an emergency
PRIUS_U_(OM47614U)
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 hybrid system. Carefully lift the hood after the
steam subsides and then restart the hybrid system.
If you do not see steam: Leave the hybrid system operating and carefully lift the
hood.
Remove the engine compartment cover. ( P. 361)
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 hybrid system.
If the fan is not operating: Stop the hybrid system immediately and call your local Toy-
ota dealer.
The following may indicate that your vehicle is overheating:
The high engine coolant temperature warning light comes on:
The hybrid system may be overheating.
Follow the correction procedure as described blow.
STEP1
STEP2
STEP3
STEP4

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Alphabetical index
PRIUS_U_(OM47614U)
How your child should wear
the seatbelt .......................... 67
Installing child restraints ....... 111
Power window lock switch ...... 76
Power window precautions..... 78
Removed electronic key battery
precautions ........................ 393
Seat belt precautions.............. 68
Back door ............................... 56
Cleaning Exterior ................................. 342
Interior .................................. 344
Seat belts ............................. 345
Clock ........................................ 328
Condenser ............................... 369
Console box............................. 320
Cooling system Hybrid system overheating ... 454
Cruise control Cruise control ....................... 159
Cup holders ............................. 322
Curtain shield airbags .............. 89
Customizable features ............ 486
Daytime running light system ................................... 153
Defogger
Rear window......................... 213
Side mirror ............................ 213
Dimension ................................ 460
Dinghy towing ......................... 178
Display Touch screen........................ 182
Trip information ...................... 27
Do-it-yourself maintenance .... 353
Door courtesy lights ............... 315
Door pocket ............................. 323
Doors Door lock .................... 36, 49, 51
Rear door child protector ........ 52 Driver’s seat belt reminder
light .........................................426
Driving
break-in tips...........................123
Correct posture .......................87
Procedures ............................122
Winter driving tips..................173
Electronic key Replacing battery ..................392
When the electronic key battery is discharged...........448
Electric Power Steering ...........166
Emergency flashers
Switch....................................412
Emergency, in case of If a warning light turns on ......423
If the electronic key does not
operate properly..................448
If the hybrid system will not start .....................................446
If the 12 volt battery is discharged .........................449
If you have a flat tire .............436
If you lose your keys .............447
If you think something is wrong ..................................420
If your vehicle becomes stuck ...................................457
If your vehicle needs to be
towed ..................................413
If your vehicle overheats .......454
Engine
Compartment ........................360
Hood......................................357
How to start the hybrid system ................................132
If the hybrid system will not start ...............................446
Overheating...........................454
“POWER” switch ...................132
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501
Alphabetical index
PRIUS_U_(OM47614U)
Interior lights
Interior lights ......................... 317
Switch ................................... 317
Wattage ................................ 469
Jack Positioning a floor jack ......... 358
Vehicle-equipped jack .......... 436
Jack handle.............................. 436
Keys Electronic key ......................... 49
If you lose your keys............. 447
If your electronic key ............ 448
Key number plate ................... 35
Keyless entry .......................... 36
Keys ....................................... 34
“POWER” switch .................. 132
Mechanical key....................... 34
Wireless remote control key ... 49
Light bulbs Replacing ............................. 403
Wattage ................................ 469
Lights
Emergency flasher switch .... 412
Fog light switch..................... 155
Hazard light switch ............... 412
Headlights switch ................. 152
Interior lights list ................... 315
Replacing light bulbs ............ 403
Turn signal lever ................... 142
Vanity lights .......................... 327
Wattage ................................ 469
Load capacity .......................... 172
Maintenance Do-it-yourself maintenance ...................... 353
General maintenance ........... 349 Maintenance data..................460
Maintenance
requirements .......................347
Meter Instrument panel light control .................................146
Meters ...................................145
Mirrors Inside rear view mirror.............72
Side mirror heater .................213
Side mirrors .............................74
Vanity mirrors ........................327
MP3 disc ...................................250
Odometer ..................................145
Oil Engine oil ..............................361
Opener Fuel filler door .........................79
Hood......................................357
Back door ................................54
Outside rear view mirrors Adjusting and folding ...............74
Outside temperature
display ....................................185
Overheating, Hybrid system ....................................454
Parking brake ...........................143
Parking lights Replacing light bulbs .............403
Switch....................................152
Wattage .................................469
Personal lights .........................317
Power outlet .............................329
Power windows ..........................76
Radiator ....................................369
Radio .........................................221
RDS (Radio Data System) .......223
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