heater TOYOTA PRIUS PLUG-IN HYBRID 2021 User Guide

1902-2. Charging
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Solar charging system
●In the following cases, charging the hybrid battery (traction battery) via the
solar charging system is not performed. Solar power generation stops when
the solar battery becomes fully charged.
• Charging via an external power source
• The power switch is not off
• The “Traction Battery Heater” is operating (P. 154)
• The Remote Air Conditioning System is operating
• When the amount of remaining charge in the hybrid battery (traction bat-
tery) is approximately 90% or more of the fully charged capacity for the
charging from an external power source
●In the following cases, the solar charging system stops solar power genera-
tion and power supply to the hybrid battery (traction battery) and auxiliary
systems.
• The temperature preservation function of the solar charging system oper-
ates
• There is a malfunction in the solar charging system
• When the 12-volt battery terminals are disconnected
●The amount of power generated by the solar roof differs according to the
season, climate, weather conditions, vehicle angle and surrounding condi-
tions.
●If even part of the solar roof is in the shade, there may be an extreme drop
in power generation.
●Please adhere to the following in order to allow full performance of the solar
roof.
• Clean the roof on a routine basis (Especially fallen leaves and bird drop-
pings can lead to a substantial decrease in power generation)
• Remove snow from the roof as soon as possible
• Do not attach any seals or stickers to the roof
It is recommended not to install a roof carrier etc. unless it is necessary
●When the hybrid battery (traction battery) is fully charged, charging the bat-
tery via the solar charging system is not performed. When it is not neces-
sary to perform charging from an external power source, charge the vehicle
as much as possible using the solar charging system during the day and
use the external power source only at night. As a result, the solar charging
system can be used effectively.
●When the vehicle is left in the hot weather, the temperature preservation
function of the solar charging system becomes easy to operate due to high
temperature of the vehicle interior. The solar charging system can be used
effectively by using a sunshade or parking the vehicle facing north, etc.

1952-2. Charging
2
Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Charging starts, even though charge schedule is registered
“Charge Now” is set to “On”
When charging according to the charging
schedule, set “Charge Now” to “Off”.
(P. 184)
Charge schedule is set to
“Off”Check that charge schedule is not set to
“Off”. (P. 1 8 2 )
Charging mode is set to
“Departure” and schedule
departure time is close to
current timeWhen the system determines that there is
no time to finish charging by the set sched-
uled departure time, it starts charging.
Check the charge schedules.
Charging cable was
removed and reinserted
while charging indicator was
flashingIf the charging cable is removed and rein-
serted while the charging indicator is flash-
ing, the charging schedule is canceled
(P. 168). Temporarily remove the charging
cable, and then reconnect it.
The Remote Air Conditioning
System was operated
When the Remote Air Conditioning System
is operated, the system will start charging,
even if the charge schedule is registered. To
carry out charging using the charging
schedule, stop the Remote Air Conditioning
System, and then reconnect the charging
cable.
“Traction Battery Heater”
(P. 154) operated
When the charging mode is set to “Depar-
ture”, “Traction Battery Heater” may operate
before charging starts. Check the status of
the charging indicator. (P. 125)
Charging ends earlier than time set in “Departure”
Charging end time does not
match estimated end time
due to condition of power
source or outside tempera-
tureIf sudden changes in temperature or
changes in the condition of the power
source occur while charging, charging may
end earlier than the time estimated by the
system.
Likely causeCorrection procedure

1972-2. Charging
2
Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
When the hybrid system is started
after charging, a message is dis-
played in the multi-information dis-
play.
When this occurs, follow the
instructions displayed on the
screen.
When charging-related message is displayed
Likely causeCorrection procedure
If “Charging Stopped Due to Pulled Charging Connector” is shown
Charging connector is
removed while charging
When the charging connector is removed
while charging, charging stops. If you want
to fully charge the hybrid battery (traction
battery), reconnect the charging connector.
After the hybrid battery (trac-
tion battery) is fully charged,
the charging connector is
removed while the hybrid
battery (traction battery) is
being recharged again
because electricity-consum-
ing functions
* have been
used and the remaining
charge is now reduced.
*: Electricity is consumed
when operating “Traction
Battery Heater” (P. 154),
the air conditioning-linked
function (P. 176) or
Remote Air Conditioning
System (P. 585).

5565-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
WARNING
●Do not use the system in the following situations, as the system may be
unable to correctly assist you in reaching the target parking spot and may
lead to an unexpected accident.
• In an area that is not a parking lot
• A parking lot that is not paved and has no parking space lines, such as
a sand or gravel parking lot
• A parking lot that has a slope or undulations in the road
• A frozen, snow-covered or slippery road
• The asphalt is melting due to hot weather
• There is an obstacle between the vehicle and the target parking spot
• Using tire chains
● Do not use tire other than that provided by the manufacturer. The system
may not operate properly. When replacing tires, contact any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer.
● The system may not be able position the vehicle in the set location in the
following situations.
• The tires are extremely worn or the tire pressure is low
• The vehicle is carrying very heavy load
• The vehicle is tilted due to having luggage, etc. located on one side of
the vehicle
• There are road heaters installed in the parking lot to prevent the road
surface from freezing.
In any other situations when the set position and vehicle position greatly
differ, have the vehicle inspected by any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
● Make sure to observe the following precautions regarding the exit parallel
parking assist mode.
Exit parallel parking assist mode is a function used when departing from a
parallel parking spot. However, this function may not be usable if obsta-
cles or people are detected in front of the vehicle. Only use this function
when departing from a parallel parking s pot. In the event that the steering
control operates, either turn the system off using the S-IPA switch or oper-
ate the steering wheel to stop the control.
● If exit parallel parking assist mode is mistakenly used in the following situ-
ations, the vehicle may make contact with an obstacle.
The departure function is operated in a direction where an obstacle is
present, but the obstacle is not detected by the side sensors (situations
such as when the vehicle is directly beside a pole).

571
6Interior features
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
6-1. Using the air conditioning
system and defogger
Automatic air conditioning
system ............................. 572
Remote Air Conditioning
System............................. 585
Seat heaters ...................... 589
6-2. Using the interior lights
Interior lights list ................. 591
• Front interior light .......... 592
• Front personal lights ...... 592
• Rear interior light ........... 593
6-3. Using the storage features
List of storage features ...... 594
• Glove box ...................... 595
• Console box .................. 595
• Cup holders ................... 596
• Bottle holders/
door pockets .................. 597
• Auxiliary boxes .............. 598
• Seat back pockets ......... 599
Luggage compartment
features............................ 600
6-4. Using the other interior
features
Other interior features ........ 605
• Sun visors...................... 605
• Vanity mirrors ................ 605
• Power outlets................. 606
• Wireless charger ........... 607
• Armrest .......................... 613
• Coat hooks .................... 613
• Assist grips .................... 614

5796-1. Using the air conditioning system and defogger
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
6
Interior features
■ Heating
● In HV mode, the gasoline engine may operate in order to extract heat from
the engine coolant via the heater.
● In EV mode, heating is done by a heat pump system.
• When the outside temperature is low or it is snowing, compared to con-
ventional vehicles, heating may be less effective and warm air may not
come out.
• If frost has formed on the outside heat exchanger, the heating perfor-
mance will decline. The frost can be removed from the outside heat
exchanger by operating the Remote Ai r Conditioning System before driv-
ing ( P. 585). When frosted over, the heating operation of the Remote
Air Conditioning System starts after defrosting.
• When is turned on, the heating is controlled optimally. Therefore,
the set heating performance may not be achieved even if the fan speed
setting is increased.
● In the following situations the gasoline engine may operate in order to
extract heat from the engine coolant via the heater even in EV mode.
• The outside temperature is approx imately -10°C (14°F) or low
• is operating
■ Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and
the ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow
immediately after is pressed.
• When the outside heat exchanger is
frosted over, fan speed declines and it
may become harder to heat the inte-
rior. However, it is not a malfunction.
In this situation, the air temperature
from the outlets may not change even
though the set temperature is raised.Outside heat exchanger

5866-1. Using the air conditioning system and defogger
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Operating conditions
The system will only operate if all of the following conditions are met:
●The shift position is in P.
●The power switch is off.
*
●All doors are closed.
●The hood is closed.
*: The Remote Air Conditioning System cannot be used for approximately 3
minutes and a half after the power switch is turned off.
■Remote Air Conditioning System automatic shut-off
The system will automatically shut off under the following conditions:
●About 10 minutes have passed since operation began
●Any one of the operating conditions is not met
The system may also shut off if the charge level of the hybrid battery (traction
battery) drops to low.
■Conditions affecting operation
The system may not start in the following situations:
●The charge level of the hybrid battery (traction battery) is low
●The outside temperature is extremely low
●When the hybrid system is cool (for example, after being left for a long time
in low temperatures)
■Windshield defogger
When defogging the windshield using the Remote Air Conditioning System,
defogging may be insufficient due to the power being restricted more than
during normal air conditioning operation. Also, the outside of the windshield
may fog up due to the outside temperature, humidity or air conditioning set
temperature.
■Using the heater via the Remote Air Conditioning System
When the outside heat exchanger becomes frosted over, heating perfor-
mance may decline due to automatically switching to the frost removal opera-
tion.
■Security feature
Any unlocked doors will be automatically locked when the system is operat-
ing. The emergency flashers flash to indicate that the doors have been locked
or the system has been turned off.
(The doors locked: Once; The system turned off: Twice)
■Conditions affecting operation
P. 296

5876-1. Using the air conditioning system and defogger
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
6
Interior features
■When using the Remote Air Conditioning System
A charging message will be displayed on the multi-information display. Differ-
ent messages will be displayed depending on when the Remote Air Condi-
tioning System was started (after charging or during charging).
■While the Remote Air Conditioning System is operating
●Depending on the operating condition of the Remote Air Conditioning Sys-
tem, the electric fan may spin and an operating noise may be heard.
However, this does not indicate a malfunction.
●The Remote Air Conditioning System may stop operating temporarily if
other features that use electricity (for example, the seat heater, lights, wind-
shield wipers) are in operation or if the charge level of the 12-volt battery
becomes low.
●The headlights, windshield wiper, combination meter, etc. will not operate
while the Remote Air Conditioning System is operating.
■Electronic key battery depletion
P. 280
■When the electronic key battery is fully depleted
P. 688
■Customization
Setting (e.g. Operation using “A/C” on the wireless remote control) can be
changed. (Customizable features: P. 782)

5896-1. Using the air conditioning system and defogger
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
6
Interior features
Seat heaters
Seat heaters heat the front seats.
WARNING
● Care should be taken to prevent injury if anyone in the following categories
comes in contact with the seats when the heater is on:
• 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.)
● Observe the following precautions to prevent minor burns or overheating:
• Do not cover the seat with a blanket or cushion when using the seat
heater.
• Do not use seat heater more than necessary.
NOTICE
● 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, do not use the functions when the
hybrid system is off.

5906-1. Using the air conditioning system and defogger
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Heats the seat at low tempera-
ture (LO)
Heats the seat at high tempera-
ture (HI)
The indicator light comes on when
one side of the switch is pressed.
To stop operation, gently press the
other side of the switch.
● The seat heaters can be used when the power switch is in ON mode.
● When not in use, turn off the switch. The indicator light turns off.
Operating instructions
indicator
indicator
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