2012 TOYOTA PRIUS C engine overheat

152 2-1. Driving procedures
CAUTION
●Do not shift the shift lever to R while the vehicle is moving forward.
Doing so can damage the transmission and may result in a loss of vehicle\
control.
● Do not shift the shift lever to D while the vehicle is moving backward.
Doing so can damage the transmission and may result in a loss of vehicle\
control.
● Moving the shift lever to N while the vehicle is moving will disengage the
hybrid system. Engine braking is not available with the hybrid system dis-
engaged.
● During normal driving, do not turn off the hybrid system. Turning the hybrid
system off while driving will not cause loss of steering or braking control,
but the power assist to these systems will be lost. This will make it more
difficult to steer and brake, so you should pull over and stop the vehicle as
soon as it is safe to do so.
However, in the event of an emergency, such as if it becomes impossible
to stop the vehicle in the normal way: P. 486
● Use engine braking (shift position B) to maintain a safe speed when driv-
ing down a steep hill.
Using the brakes continuously may cause the brakes to overheat and lose
effectiveness. ( P. 174)
● Do not adjust the positions 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,
resulting in death or serious injury.
● Always check that all passengers' arms, heads or other parts of their body
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.

154 2-1. Driving procedures
CAUTION
■When the vehicle is stopped
●Do not depress the accelerator pedal unnecessarily.
If the vehicle is in any gear other than P or N, the vehicle may accelerate
suddenly and unexpectedly, causing an accident.
● Do not leave the vehicle with the hybrid system on for a long time.
If such a situation cannot be avoided, park the vehicle in an open space
and check that exhaust fumes do not enter the vehicle interior.
● In order to prevent accidents due to the vehicle rolling away, always keep
depressing the brake pedal while the “READY” indicator is on. Apply the
parking brake as necessary.
● If the vehicle is stopped on an incline, in order to prevent accidents caused
by the vehicle rolling forward or backward, always depress the brake pedal
and securely apply the parking brake as needed.
● Avoid revving or racing the engine.
Running the engine at high speed while the vehicle is stopped may cause
the exhaust system to overheat, which could result in a fire if combustible
material is nearby.
■ When the vehicle is parked
●Do not leave glasses, cigarette lighters, spray cans, or soft drink cans in
the vehicle when it is in the sun.
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may lead to a
fire.
• The temperature inside the vehicle may cause the plastic lenses and plastic material of glasses to deform or crack.
• Soft drink cans may fracture, causing the contents to spray over the interior of the vehicle, and may also cause a short circuit in the vehi-
cle's electrical components.
● Do not leave cigarette lighters in the vehicle. If a cigarette lighter is in a
place such as the glove box or on the floor, it may be lit accidentally when
luggage is loaded or the seat is adjusted, causing a fire.

181
2-2. Instrument cluster
2
When driving
NOTICE
■
To prevent damage to the engine and its components
This vehicle is not installed with an engine coolant temperature gauge.
Instead, is shown on the multi-information display. The engine may
be overheating if is shown on the multi-information display. In this
case, immediately stop the vehicle in a safe place. ( P. 480)

220 2-4. Using other driving systems
When the TRAC/VSC/ABS/hill-start assist control systems are
operatingThe slip indicator light will flash
while the TRAC/VSC/ABS/hill-
start assist control systems are
operating.
The stop lights and high mounted
stoplight turn on when the hill-
start assist control system is
operating.
■Sounds and vibrations caused by the ABS, brake assist, TRAC and
VSC systems
●A sound may be heard from the engine compartment when the hybrid
system is started or just after the vehicle begins to move, if the brake
pedal is depressed forcefully or repeatedly, or 1 - 2 minuets after the
hybrid system is stopped. This sound does not indicate that a malfunc-
tion has occurred in any of these systems.
● Any of the following conditions may occur when the above systems are
operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
■ EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may
be heard. This does not indicate a malfunction.
■ Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from
overheating when there is frequent steering input over an extended period of
time. The steering wheel may feel heavy as a result. Should this occur,
refrain from excessive steering input or stop the vehicle and turn the hybrid
system off. The EPS system should return to normal within 10 minutes.

480
5-2. Steps to take in an emergency
If your vehicle overheats
Correction procedures■ If is shown on the mu lti-information display:
Stop the vehicle in a safe place and turn off the air condition-
ing system.
Check to see if steam is coming out from the engine area.
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.
Check to see if the cooling fans are operating.
If the fans are operating:
Wait until disappears and then stop the hybrid system.
If the fans are not operating:
Stop the hybrid system immediately and call your Toyota
dealer.
The following may indicate that your vehicle is overheating:
● is shown on the multi-information display:
The engine may be overheating.
● The hybrid system overheat wa rning message is shown on the
multi-informat ion display:
The power control unit may be overheating.
Follow the correction procedure as described below.
STEP1
STEP2
STEP3

5
When trouble arises
483
5-2. Steps to take in an emergency
■
Overheating
The following symptoms may occur when your vehicle is overheating:
●Hybrid system output decreases.
● Steam comes out from the engine area.
CAUTION
■To prevent an accident or injury when inspecting under the hood of
your vehicle
●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, caus-
ing serious injuries such as burns.
● Check that on the multi-information display and the “READY” indi-
cator are off.
● For vehicles with a hybrid system, there are times when the gasoline
engine automatically starts to run or the cooling fans suddenly start to
operate. Do not touch or approach the rotating parts of the belt or fans.
Doing so may lead to fingers, clothes or tools getting caught, resulting\
in
injury.
● Do not loosen the radiator cap while the hybrid system and radiator are
hot.
Serious injuries, such as burns, may result from hot coolant and steam
released under pressure.

542 Alphabetical index
DoorsBack door ................................71
Door lock ..................... 47, 61, 65
Door windows..........................98
Rear door child protector.........67
Side doors ...............................65
Side mirrors .............................96
Driver’s seat belt reminder
light ......................................... 433
Driving Break-in tips .......................... 149
Correct posture ..................... 113
Procedures ............................ 148
Winter driving tips.................. 229
Eco drive mode ........................ 174
Electric power steering ........... 219
Electronic key If the electronic key does
not operate properly............ 473
Emergency flashers Switch.................................... 424
Emergency, in case of If a warning buzzer sounds ................................ 431
If a warning light turns on ............................... 431
If a warning message is
displayed............................. 441
If the electronic key does not operate properly............ 473
If the hybrid system will not start ............................... 469
If the shift lever cannot
be shifted from P................. 471
If the vehicle becomes stuck ................................... 485
If the vehicle 12-volt battery is discharged........... 475 If you have a flat tire ............. 457
If you lose your keys ............. 472
If you think something is
wrong .................................. 430
If your vehicle has to
be stopped in an
emergency .......................... 486
If your vehicle needs to
be towed ............................. 425
If your vehicle overheats ....... 480
Engine
Compartment ........................ 364
Engine switch ................ 158, 162
Hood ..................................... 360
How to start the hybrid system ........................ 158, 162
Identification number............. 491
If the hybrid system will
not start............................... 469
Ignition switch ............... 158, 162
Overheating .......................... 480
“POWER” switch ................... 162
Engine coolant
Capacity ................................ 494
Checking ............................... 369
Preparing and checking before winter ....................... 229
E

545
Alphabetical index
Luggage compartment light
Wattage ................................ 499
Luggage cover......................... 339
Maintenance Do-it-yourself maintenance ...................... 356
Emission inspection and maintenance (I/M)
programs ............................ 355
General maintenance ........... 351
Maintenance data ................. 490
Maintenance requirements ... 348
Meter Instrument panel light control ................................ 180
Meters .................................. 179
Microphone .............................. 293
Mirrors Inside rear view mirror ............ 94
Outside rear view mirror defogger ............................. 245
Outside rear view mirrors ....... 96
Vanity mirrors ....................... 330
Moon roof................................. 101
MP3 disc................................... 259
Multi-information display ....... 185
Noise from under vehicle ......... 16
Odometer ................................. 187
Oil
Engine oil.............................. 365
Opener Back door ............................... 71
Fuel filler door....................... 105
Hood ..................................... 360
Outside rear view mirrors
Adjusting and folding .............. 96
Defogger............................... 245 Outside temperature
display ....................................331
Overheating, Hybrid system ....................................480
Parking brake ...........................177
Parking lights Replacing light bulbs .............411
Switch....................................202
Wattage .................................499
Personal lights Switch....................................319
Wattage .................................499
Power outlet .............................333
“POWER” switch......................162
Power windows ..........................98
Radiator ....................................371
Radio .........................................252
Rear seat Folding down ...........................77
Rear turn signal lights Replacing light bulbs .............411
Wattage .................................499
Rear window defogger ............245
Rear window wiper ..................212
Reset the maintenance data ...349
Replacing Fuses ....................................400
Key battery ............................397
Light bulbs .............................411
Tires ......................................457
Reporting safety defects
for U.S. owners ......................524
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