2012 TOYOTA PRIUS V heating

291
3-1. Using the air conditioning system
and defogger
PRIUS v_U (OM47784U)
3
Interior features
■Outside temperature display
In the following situations, the correct outside temperature may not be dis-
played, or the display may take longer than normal to change.
● When stopped, or driving at low speeds (less than 16 mph [25 km/h])
● When the outside temperature has changed suddenly (at the entrance/
exit of a garage, tunnel, etc.)
■ Operation of the air conditio ning system in Eco drive mode
In the Eco drive mode, the air conditioning system is controlled as follows to
prioritize fuel efficiency:
● Engine speed and compressor operation controlled to restrict heating/
cooling capacity
● Fan speed restricted when automatic mode is selected
To improve air conditioning performance, perform the following operations:
● Adjust the fan speed
● Turn off Eco drive mode ( P. 187)
● Customize the air conditioning control of Eco drive mode. ( P. 529)
■ When outside air temperature is below 32 F (0 C)
The cooling and dehumidification function may not operate even when
is pressed.
■ Air conditioning odors
● During use, various odors from inside and outside the vehicle may enter
into and accumulate in the air conditioning system. This may then cause
odor to be emitted from the vents.
● To reduce potential odors from occurring:
• It is recommended that the air conditioning system be set to outside air
mode prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short period of time immediately after the air conditioning system is started in automatic
mode.

320 3-5. Other interior features
PRIUS v_U (OM47784U)
CAUTION
■Burns
● Use caution when seating the following persons in a seat with the seat
heater on to avoid the possibility of burns:
• Babies, small children, the elderly, the sick and the physically chal-
lenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs, cold remedies, etc.)
● Do not cover the seat with anything when using the seat heater.
Using the seat heater with a blanket or cushion increases the temperature
of the seat and may lead to overheating.
● Do not use the seat heater more than necessary. Doing so may cause
minor burns or overheating.
NOTICE
■To prevent seat heater damage
Do not put heavy objects that have an uneven surface on the seat and do
not stick sharp objects (needles, nails, etc.) into the seat.
■ To prevent 12-volt battery discharge
Turn the seat heaters off when the hybrid system is off.

5
When trouble arises
487
5-2. Steps to take in an emergency
PRIUS v_U (OM47784U)
If your vehicle overheats
Correction procedures■ If the high coolant temperature warning light flashes or comes
on
Stop the vehicle in a safe place and turn off the air condition-
ing 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.
Check to see if the cooling fans are operating.
If the fans are operating: Wait until the high coolant temperature warning light goes
off 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:
●The high coolant temperature warn ing light flashes or comes on:
The engine may be overheating.
● The hybrid system overhe at warning light comes on:
The power control unit may be overheating.
Follow the correction procedure as described below.
STEP 1
STEP 2
STEP 3

5
When trouble arises
489
5-2. Steps to take in an emergency
PRIUS v_U (OM47784U)
After the hybrid system has
cooled down, check the power
control unit coolant level and
inspect the cooling system for
leaks.
If necessary, add power control
unit coolant up to the “F” line.
Water can be used in an emer-
gency measure if power control
unit coolant is unavailable.
(
P. 501)
Have the vehicle checked at nearest Toyota dealer as soon as possi-
ble.
STEP 4
STEP 5
■ Overheating
The following symptoms may occur when your vehicle is overheating:
● Hybrid system output decrease
● Steam is coming from under the hood

553
Alphabetical index
PRIUS v_U (OM47784U)
Bluetooth®*
Bottle holders .......................... 311
Brake
Fluid...................................... 503
Parking brake ....................... 195
Brake assist ............................. 252
Break-in tips ............................ 165
Brightness control Instrument panel light
control ................................ 199
Camera
*
Care Exterior ................................. 348
Interior .................................. 352
Seat belts ............................. 353
Cargo capacity ........................ 272
Cargo hooks ............................ 328
CD player
*
Chains ...................................... 274
Child restraint system
Booster seats, definition ....... 144
Booster seats, installation .... 153
Convertible seats, definition............................. 144
Convertible seats, installation .......................... 153
Front passenger occupant classification system .......... 138
Infant seats, definition .......... 144
Infant seats, installation ........ 153
Installing child restraint system with LATCH anchors .......... 150
Installing child restraint system with seat belts .................... 153
Installing child restraint system
with top tether strap ........... 158 Child safety
Airbag precautions ................132
Back door precautions ............81
Child restraint system............144
Child-protectors .......................75
How your child should wear the seat belt ........................102
Installing child restraints ........149
Panoramic roof precautions .........................324
Power window lock switch.....112
Power window precautions ...114
Removed electronic key battery precautions .........................409
Seat belt extender
precautions .........................106
Seat belt precautions ............103
Seat heater precautions ........320
12-volt battery precautions ....386
Child-protectors .........................75
Cleaning Exterior ..................................348
Interior ...................................352
Seat belts ..............................353
Clock .........................................316
Condenser ................................379
Console box .............................308
Cooling system
Engine overheating ...............487
Hybrid system overheating....487
Cruise control
Cruise control ........................231
Dynamic radar cruise control .................................235
Cup holders ..............................309
Curtain shield airbags .............124
Customizable features.............525
C
*: Refer to “Display Audio System Owner’s Manual” or “Navigation System Owner’s Manual”.

555
Alphabetical index
PRIUS v_U (OM47784U)
Engine
Accessory mode ................... 177
Compartment........................ 372
Hood ..................................... 366
How to start the hybrid system................................ 175
Identification number ............ 497
If the hybrid system will not start .................................... 476
Ignition switch ....................... 175
Overheating .......................... 487
“POWER” switch .................. 175
Engine coolant Capacity ............................... 501
Checking .............................. 377
Preparing and checking before winter ...................... 273
Engine/power control unit coolant
Capacity ............................... 501
Checking .............................. 377
Preparing and checking before winter ...................... 273
Engine oil Capacity ............................... 499
Checking .............................. 373
Preparing and checking before winter ...................... 273
Enhanced VSC......................... 252
EPS ........................................... 252
EV drive mode switch ............. 182
Event data recorder .................. 23 Floor mats.................................326
Fluid
Brake .....................................503
Washer ..................................382
Fog lights Replacing light bulbs .............421
Switch....................................221
Wattage .................................506
Foot lights.................................301
Front fog lights
Replacing light bulbs .............421
Switch....................................221
Wattage .................................506
Front passenger occupant classification system ............138
Front passenger’s seat belt reminder light.........................451
Front seats
Adjustment ..............................84
Flattening seatbacks ...............85
Front side marker light Replacing light bulbs .............421
Wattage .................................506
Front turn signal lights Replacing light bulbs .............421
Switch....................................194
Wattage .................................506
Fuel
Capacity ................................498
Fuel gauge ............................197
Information ............................507
Refueling ...............................115
Type ......................................507
Fuel door...................................115
Fuel filler door ..........................115
Fuses.........................................410F

557
Alphabetical index
PRIUS v_U (OM47784U)
License plate lights
Replacing light bulbs ............ 421
Wattage ................................ 506
Light bulbs Replacing ............................. 421
Wattage ................................ 506
Lights Emergency flasher switch .... 436
Fog light switch..................... 221
Foot lights ............................. 301
Hazard light switch ............... 436
Headlight switch ................... 213
Interior lights ......................... 302
Personal lights ...................... 303
Replacing light bulbs ............ 421
Shift lever lighting ................. 301
Turn signal lever ................... 194
Turn signal light switch ......... 194
Vanity lights .......................... 315
Wattage ................................ 506
Load capacity .......................... 272
Luggage compartment light Switch ..................................... 80
Wattage ................................ 506
Luggage cover......................... 330
Maintenance
Do-it-yourself maintenance .. 363
General maintenance ........... 358
Maintenance data ................. 496
Maintenance requirements ... 355
Reset the maintenance data .................................... 356 Meter
Instrument panel light control .................................199
Meters ...................................197
Speed unit select button........199
Trip information display .........201
Micro dust and pollen filter .....287
Microphone
*............................340
Mirrors
Inside rear view mirror...........108
Side mirror heater .................295
Side mirrors ...........................110
Vanity mirrors ........................315
MP3 disc
*
Navigation system (refer to “Navigation
System Owner’s Manual”)
Noise from under vehicle ..........20
Odometer ..................................198
Oil Engine oil ..............................373
Opener Back door ................................79
Fuel filler door .......................115
Hood......................................366
Outside rear view mirrors Adjusting and folding .............110
Outside rear view mirror defogger switch .....................295
Outside temperature
display ....................................280
Overhead console ....................312
Overheating ..............................487
L
M
N
O
*: Refer to “Display Audio System Owner’s Manual” or “Navigation System Owner’s Manual”.