2013 TOYOTA PRIUS PHV heating

330 2-4. Using other driving systems
PRIUS PHV_OM_OM47787U_(U)
■Sounds and vibrations caused by the ABS, brake assist, VSC and
TRAC
● A sound may be heard from the engine compartment when the hybrid
system is started, just after the vehicle begins to move, if the brake pedal
is depressed forcefully or repeatedly, or 1-2 minutes after the hybrid sys-
tem is stopped. This sound does not indicate that a malfunction 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.
■ Electric power steering system warning light (warning buzzer)
 P. 540

367
3-1. Using the air conditioning system
and defogger
PRIUS PHV_OM_OM47787U_(U)
3
Interior features
■If air flow from the vents decreases dramatically
The filter may be clogged. Contact your Toyota dealer.
■ 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. 247)
● Customize the air conditioning control of Eco drive mode. ( P. 639)
■ 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.
■ Customization
Settings (e.g. enable/disable automatic operation of the air conditioning
compressor when the “AUTO” switch ON) can be changed.
(Customizable features P. 639)

398 3-5. Other interior features
PRIUS PHV_OM_OM47787U_(U)
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
551
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
Warning messageDetailsCorrection
procedure
(If equipped) • Indicates that the pre-collision
system is not currently func-
tional because the grille or the
sensor is dirty.
• This message also appears when the pre-collision system
is not functional due to over-
heating. • Check the grille
and the sensor and
clean them if they
are dirty.
• In case of over- heating, the system
will become func-
tional once the sys-
tem cools down.
(Flashes)
(If equipped) Indicates that the radar cruise
control sensor is dirty or cov-
ered with ice.
Clean the sensor.
(Flashes)
(If equipped) Indicates that the radar cruise
control system is unable to
judge vehicle-to-vehicle dis-
tance.
If the windshield
wipers are on, turn
them off or set
them to either the
intermittent or the
slow mode.

600
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
If your vehicle overheats
Correction procedures■ If the high coolant temperatur e warning light comes on or
flashes
Stop the vehicle in a safe place and turn off the air condition-
ing system, and then stop the hybrid system.
If you see steam: Carefully lift the hood after the steam subsides.
If you do not see steam: Carefully lift the hood.
After the hybrid system has
cooled down sufficiently, inspect
the hoses and radiator core
(radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
The following may indicate that your vehicle is overheating.
●The high coolant temperature warning light ( P. 534) comes on
or flashes, or a loss of hybrid system power is experienced. (For
example, the vehicle s peed does not increase.)
● “HYBRID SYSTEM OVERHEAT” ( P. 552) is shown on the
multi-informat ion display.
● Steam comes out from under the hood.
1 ÉTAPE
2 ÉTAPE
STEP 3

644 6-2. Customization
PRIUS PHV_OM_OM47787U_(U)
ItemFunctionDefault set-tingCustom-ized
setting
Meter and
instrument
panel
( P. 257) Sensor sensitiv-
ity for darkening
the brightness of
the meter, navi-
gation system
and instrument
panel depend-
ing on the out-
side brightness
0 -2 to +2 – – O
Sensor sensitiv-
ity for returning
the brightness of
the meter, navi-
gation system
and instrument
panel to the orig-
inal level
depending on
the outside
brightness 0 -2 to +2 – – O
Automatic
air
conditioning
system
( P. 358) Enable/disable
automatic
operation of the
air conditioning
compressor
when the
“AUTO” switch
ON
ON OFF – O O
Heating/cooling
operation mini-
mized in Eco
drive mode ON OFF – – O

670 Alphabetical index
PRIUS PHV_OM_OM47787U_(U)
Child restraint systemBooster seats, definition ........ 204
Booster seats, installation ..... 212
Convertible seats, definition ............................. 204
Convertible seats,
installation ...........................212
Front passenger occupant classification system ...........198
Infant seats, definition ...........204
Infant seats, installation.........212
Installing child restraint system with LATCH anchors ...........210
Installing child restraint system with seat belts ..................... 212
Installing child restraint system with top tether strap ............216
Child safety
Airbag precautions ................192
Back door precautions .......... 142
Child restraint system............204
Child-protectors ..................... 135
How to charge ......................... 80
How your child should wear the seat belt ........................159
Installing child restraints ........ 209
Power window lock switch..... 171
Power window precautions ...173
Remote Air Conditioning System precautions ............374
Removed electronic key
battery precautions ............. 494
Seat belt extender precautions .........................164
Seat belt precautions ............160
Seat heater precautions ........ 398
12-volt battery precautions ....474 Child-protectors ....................... 135
Cleaning
Exterior.................................. 424
Interior ................................... 428
Seat belts .............................. 429
Clock ......................................... 275
Condenser ................................ 466
Console box ............................. 387
Cooling system
Engine overheating ............... 600
Hybrid system overheating ... 600
Cruise control
Cruise control ........................ 308
Dynamic radar cruise control ................................. 312
Cup holders .............................. 388
Curtain shield airbags ............. 184
Customizable features ............ 639

672 Alphabetical index
PRIUS PHV_OM_OM47787U_(U)
EngineAccessory mode.................... 240
Compartment ........................459
Hood......................................442
How to start the hybrid system ................................238
Identification number ............. 611
If the hybrid system will not start .....................................588
Ignition switch........................238
Overheating...........................600
“POWER” switch ...................238
Engine coolant Capacity ................................617
Checking ............................... 464
Preparing and checking before winter ....................... 349
Engine/power control
unit coolant Capacity ................................617
Checking ............................... 464
Preparing and checking before winter ....................... 349
Engine oil Capacity ................................614
Checking ............................... 460
Preparing and checking before winter ....................... 349
Enhanced VSC .........................328
EPS ............................................ 328
EV driving ratio indicator ........ 271
EV driving range ................58, 268
Event data recorder ...................25
EV/HV mode selection switch .......................................37 Floor mats ................................ 401
Fluid
Brake..................................... 619
Washer.................................. 469
Fog lights Replacing light bulbs ............. 507
Switch ................................... 298
Wattage................................. 620
Foot lights ................................ 382
Front fog lights
Replacing light bulbs ............. 507
Switch ................................... 298
Wattage................................. 620
Front passenger occupant classification system ............ 198
Front passenger’s seat belt reminder light ........................ 537
Front seats
Adjustment ............................ 146
Front side marker light Replacing light bulbs ............. 507
Wattage................................. 620
Front turn signal lights Replacing light bulbs ............. 507
Switch ................................... 254
Wattage................................. 620
Fuel Capacity ................................ 613
Fuel gauge ............................ 257
Information ............................ 621
Refueling ............................... 174
Type ...................................... 621
Fuel door .................................. 174
Fuel filler door .......................... 174
Fuses ........................................ 495F