TOYOTA PRIUS PLUG-IN HYBRID 2018 Owners Manual

5416-1. Using the air conditioning system and defogger
PRIUS PHV_OM_OM47C99E_(EE)
6
Interior features
NOTICE
■Humidity sensor
● Do not spray the glass cleaner on the sensor or subject it to strong impacts
● Do not stick anything on the sensor
■ To prevent 12-volt battery discharge
Do not leave the air conditioning syst em on longer than necessary when the
hybrid system is off.
■ Air outlets
The air outlets become hot when used for heating. Therefore, use caution
and adjust the air outlets accordingly.
In order to detect fog on the windshield, a
sensor which monitors the temperature
of the windshield, the surround humidity,
etc. is installed. ( P. 539)
Follow these points to avoid damaging
the sensor:
● Do not disassemble the sensor

5426-1. Using the air conditioning system and defogger
PRIUS PHV_OM_OM47C99E_(EE)
Remote Air Conditioning System
If the Remote Air Conditioning System is used while the charging
cable is connected to the vehicle, the reduction of charge in the hybrid
battery (traction battery) will be suppressed to allow you to use elec-
tricity from an external power source.
Charging will be conducted automatically after the Remote Air Condition-
ing System is stopped.
Check the temperature setting of the air conditioning system.
(P. 530)
The Remote Air Conditioning System will operate in accordance with the
temperature settings of the air conditioning system.
Press and hold “A/C” on the wire-
less remote control to operate the
Remote Air Conditioning System.
The system will shut off if a door is
opened.
The system can be stopped by
pressing “A/C” twice.
The Remote Air Conditioning System uses electrical energy
stored in the hybrid battery (traction battery) and allows the air
conditioning to be operated by remote control.
Before leaving the vehicle
Activating the Remote Air Conditioning System

5436-1. Using the air conditioning system and defogger
PRIUS PHV_OM_OM47C99E_(EE)
6
Interior features
■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. 290

5446-1. Using the air conditioning system and defogger
PRIUS PHV_OM_OM47C99E_(EE)■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. 274
■When the electronic key battery is fully depleted
P. 646
■Customization
Setting (e.g. Operation using “A/C” on the wireless remote control) can be
changed. (Customizable features P. 738)

5456-1. Using the air conditioning system and defogger
PRIUS PHV_OM_OM47C99E_(EE)
6
Interior features
WARNING
■Precautions for the Remote Air Conditioning System
● Do not use the system if people are in the vehicle.
Even when the system is in use, the internal temperature may still reach a
high or low level due to features such as the automatic shut-off. Children
and pets left inside the vehicle may suffer heatstroke dehydration or hypo-
thermia, or could result in death or serious injury.
● Depending on the surrounding environment, signals from the wireless
switch may transmit further than expected. Pay appropriate attention to
the vehicle’s surroundings and use the switch only when necessary.
● Do not operate “A/C” if the hood is open. The air conditioning may operate
unintentionally and objects may be drawn into the electrical cooling fan.
NOTICE
■ To prevent the hybrid battery (traction battery) from being discharged
through incorrect operation
Use “A/C” only when necessary.

5466-1. Using the air conditioning system and defogger
PRIUS PHV_OM_OM47C99E_(EE)
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.

5476-1. Using the air conditioning system and defogger
PRIUS PHV_OM_OM47C99E_(EE)
6
Interior features
Heats the seat at high tempera-
ture (HI)
Heats the seat at low tempera-
ture (LO)
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.
●Passenger side operation indicator:
Operating instructions
1
2
Illuminates while the passenger side
seat heater is operating, allowing the
operating condition of the passenger
side seat heater to be checked from the
driver side as well.

5486-2. Using the interior lights
PRIUS PHV_OM_OM47C99E_(EE)
Interior lights list
Rear interior light (P. 550)
Front personal/interior lights (P. 549)
Shift lever lighting
Footwell lights
Front door courtesy lights1
2
3
4
5

5496-2. Using the interior lights
PRIUS PHV_OM_OM47C99E_(EE)
6
Interior features
Turns the lights off
Turns the door position on
Turns the lights on
Turns the lights on/off
Front interior light
1
2
3
Front personal lights

5506-2. Using the interior lights
PRIUS PHV_OM_OM47C99E_(EE)
Turns the switch to the door
position (door linked)
Operation is linked with the front
interior light main switch. When the
switch is off, the light does not illu-
minate.
Turns the light on
●Illuminated entry system: The lights automatically turn on/off according to
power switch mode, the presence of the electronic key, whether the doors
are locked/unlocked, and whether the doors are opened/closed.
●If the interior lights remain on when the power switch is turned off, the light
will go off automatically after 20 minutes.
●Settings (e.g. the time elapsed before the lights turn off) can be changed.
(Customizable features: P. 738)
Rear interior light
1
2
NOTICE
To prevent 12-volt battery discharge, do not leave the lights on longer than
necessary when the hybrid system is off.