2020 TOYOTA PRIUS PRIME heater

TABLE OF CONTENTS4
PRIUS PRIME_OM_OM47C77U_(U)5-5. Using the driving support
systems
Toyota Safety Sense P ..... 373
PCS (Pre-Collision System) ........................... 381
LDA (Lane Departure Alert with steering
control) ............................ 393
Dynamic radar cruise control with full-speed
range ............................... 403
Driving mode select switch .............................. 419
BSM (Blind Spot Monitor) ........ 421
• The Blind Spot Monitor
function ......................... 425
• The Rear Cross Traffic Alert function ................. 428
Intuitive parking assist ....... 433
Parking Support Brake function ........................... 443
S-APGS (Simple Advanced Parking
Guidance System) .......... 455
Driving assist systems....... 489
5-6. Driving tips Winter driving tips.............. 495 6-1. Using the air conditioning
system and defogger
Automatic air conditioning system (vehicles with
7-inch display) ................. 500
Automatic air conditioning system (vehicles with
11.6-inch display) ............ 511
Remote Air Conditioning System ............................ 522
Heated steering wheel/ seat heaters..................... 526
6-2. Using the interior lights Interior lights list................. 528• Front interior light .......... 529
• Front personal lights ...... 529
• Rear interior light ........... 530
6-3. Using the storage features List of storage features ...... 531• Glove box ...................... 532
• Console box .................. 532
• Cup holders ................... 533
• Bottle holders/door pockets.................. 534
• Auxiliary boxes .............. 535
• Seat back pockets ......... 535
Luggage compartment features ........................... 536
6Interior features

20Pictorial index
PRIUS PRIME_OM_OM47C77U_(U)
■Switches
Instrument cluster light control switch . . . . . . . . . . . . . . . . P. 194
S-APGS (Simple Advanced Parking Guidance System)
switch
*1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 458
VSC OFF switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 490
Automatic High Beam switch . . . . . . . . . . . . . . . . . . . . . . . . P. 355
“HUD” (Head-up display) switch
*1. . . . . . . . . . . . . . . . . . . . P. 253
Driving mode select switch . . . . . . . . . . . . . . . . . . . . . . . . . P. 419
EV/HV mode selection switch . . . . . . . . . . . . . . . . . . . . . . . . . P. 90
EV auto mode switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 90
Seat heater switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 527
Charging timer switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 161
Window lock switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 312
Outside rear view mirror switch . . . . . . . . . . . . . . . . . . . . . . P. 310
Door lock switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 281
Power window switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 312
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5
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7
8
9
10
11
12
13
14

PRIUS PRIME_OM_OM47C77U_(U)
952-1. Plug-in hybrid system
2
Plug-in hybrid system
■Gasoline engine operation in EV/EV auto mode
Even if there is a sufficient amount of electricity remaining in the hybrid bat-
tery (traction battery) and EV driving range ( P. 212, 228, 235, 252) is being
displayed on the multi-information display etc., EV driving (dr iving using only
the electric motor) may be canceled and both gasoline engine an d electric
motor are used depending on the situation (EV driving will be returned to
automatically after EV driving becomes possible again).
EV driving may be canceled automatically in the following circu mstances:
● When vehicle speed is more than approximately 84 mph (135 km/h) .
● When power is needed temporarily, for example when the accelera tor pedal
is depressed firmly or when accelerating suddenly.
*
● When the temperature of the hybrid system is high.
The vehicle has been left in the sun, driven on a hill, driven at high speeds,
etc.
● When the temperature of the hybrid system is low.
● When the heater is switched on when the outside temperature is below
about 14°F (-10°C).
● When the windshield defogger switch is pressed. ( P. 504, 514)
● When the system determines that the gasoline engine needs to be started.
The gasoline engine may also operate in circumstances other tha n those
listed above, depending on conditions.
*: When traveling in the EV auto mode only
■ Conditions in which the gasoline engine may not stop
The gasoline engine starts and stops automatically. However, it may not stop
automatically in the following conditions
*:
● During gasoline engine warm-up
● During hybrid battery (traction battery) charging
● When the temperature of the hybrid battery (traction battery) is high or low
● When the windshield defogger switch is pressed. ( P. 504, 514)
*: Depending on the circumstances, the gasoline engine may also not stop
automatically in situations other than those above.

PRIUS PRIME_OM_OM47C77U_(U)
1072-1. Plug-in hybrid system
2
Plug-in hybrid system
◆Air conditioning
●Turn the “A/C” switch (
*1 • *2) off when it is
not needed. Doing so can help reduce excessive electricity and
fuel consumption.
In summer: When the ambient temperature is high, use the recir-
culated air mode. Doing so will help to reduce the burden on th e
air conditioning system and reduc e electricity and fuel consump-
tion as well.
In winter: Avoid excessive and unnecessary use of the heater.
Usage of the heated steering w heel (if equipped) and seat heat-
ers is effective. ( P. 5 2 6 )
● Using the Remote Air Conditioning System ( P. 522) while the
charging cable is connected to the vehicle can reduce electrici ty
consumption immediately after st arting off by operating air condi-
tioning mainly using electricity from an external power source.
● When setting the timer, selecting the start time setting mode a nd
setting “Climate Prep” to “On” c an reduce electricity consumption
immediately after starting off by operating air conditioning be fore
charging is completed. ( P. 157)
*1: Vehicles with 7-inch display
*2: Vehicles with 11.6-inch display
◆Checking tire inflation pressure
Make sure to check the tire inflation pressure frequently. If t here is
improper tire inflation pressur e in the tires, the EV driving range will
become shorter, and fuel consumption when in HV mode will
increase.
Also, as snow tires can cause large amounts of friction, their use on
dry roads can lead t o increased fuel and electricity consumptio n.
◆Luggage
Carrying heavy luggage will lead to poor fuel economy. Avoid carry-
ing unnecessary luggage. Installing a large roof rack will also cause
poor fuel economy.
◆Warming up before driving
Since the gasoline engine starts up and cuts out automatically,
warming up is not necessary.

114
PRIUS PRIME_OM_OM47C77U_(U)
2-2. Charging
The illumination/flashing pattern
changes to inform the user of the
charging status in the following
ways.
*1: Flashes for approximately 15 seconds.
*2: Flashes for approximately 10 seconds.
■Charging indicator
When a system malfunction occurs while charging or using the Re mote Air
Conditioning System, the charging indicator rapidly flashes for approximately
10 seconds, and then turns off.
If this occurs, the next time the hybrid system is started, a m essage is dis-
played on the multi-information display. When a message is displayed, follow
the instructions displayed on the screen.
Charging indicator
Illumination/flashing
patternVehicle condition
Illuminated
• Charging is in progress
• Charging is possible
• “Traction Battery Heater” ( P. 135) is operating
• “Traction Battery Cooler” ( P. 136) is operating
Flashing
(normally)
*1When charge schedule is registered ( P. 157) and
charging cable is connected to vehicle
Rapidly flashing*2When charging cannot be carried out due to mal-
function in a power source or the vehicle etc.
( P. 182)
Not illuminated
• Charging connector is not inserted into charging
inlet
• When the charging timer ( P. 157) is on standby
• When charging is completed

PRIUS PRIME_OM_OM47C77U_(U)
1332-2. Charging
2
Plug-in hybrid system
WARNING
■Power sources precautions
Observe the following precautions.
If you do not follow them, fire, electrical shock or damage may occur, possi-
bly resulting in death or serious injury.
● Connect to an AC 120 V outlet (NEMA 5-15R) with a Ground-Fault Circuit-
Interrupter (GFCI) and supplied by a circuit breaker per your l ocal code.
Use of a 15A individual circuit is strongly recommended.
● Use of a block heater for charging is prohibited.
● Make sure to connect the charging connector and charging inlet directly.
Do not connect a converting adaptor or extension cord between the
charging connector and charging inlet.
● Do not connect the charging cable to a
multi-outlet adapter, multi-plugs, or con-
version plug.
● Connecting the charging cable to an
extension cord is strictly prohibited. The
extension cord may overheat and does
not contain a Ground-Fault Circuit-Inter-
rupter (GFCI).
● Do not connect to a power strip.
ITO12P109
ITO12P110

PRIUS PRIME_OM_OM47C77U_(U)
1352-2. Charging
2
Plug-in hybrid system
■Charging time may increase
In the following situations, charging time may become longer th an normal:
● In very hot or very cold temperatures.
● The vehicle is consuming a lot of electricity, for example, when the head
light switch is on etc.
● There is a power outage during charging.
● There is an interruption in the electrical supply.
● There is a drop in the voltage of external power source.
● The charge in the 12-volt battery is low, for example due to th e vehicle being
left unused for a long period of time.
● The maximum charging current is set to 8A through the “Vehicle Settings”
settings. ( P. 132)
● When the “Traction Battery Heater” operates.
● When the “Traction Battery Cooler” is operated before charging. (P. 136)
● When the plug generates heat due to a loose outlet connection e tc.
■ Using a DC Charger
DC Chargers cannot be used with this vehicle.
This vehicle is equipped with sev eral functions that are linked with
charging.
■“Traction Battery Heater”
When the outside temperature is low and the charging cable is con-
nected to the vehicle, this funct ion automatically warms the hybrid
battery (traction battery) until it reaches or exceeds a certai n tem-
perature.
● When the charging cable is removed from the vehicle or remains
connected to the vehicle for approximately 3 days, the system
automatically stops.
● When the charging timer is used ( P. 157), this function will
operate according to the timer settings.
Charging-linked functions

136
PRIUS PRIME_OM_OM47C77U_(U)
2-2. Charging
■Hybrid battery (traction battery) warming control (Alaska and
Canada only)
This control operates after the charging cable remains connected to
the vehicle for 3 days and “Traction Battery Heater” automatica lly
stops. It automatically insulates the hybrid battery (traction battery)
in extremely low temperatures.
● This control stops 31 days after the charging cable is connected,
even if it is still connected to t he vehicle.
● When this control operates, timer charging settings are ignored
and charging starts.
■“Traction Battery Cooler”
When the hybrid battery (traction battery) is hot, this functio n pro-
tects it by using the vehicle air conditioning to cool it befor e
charging is carried out.
When the hybrid battery (trac-
tion battery) is above a certain
temperature and the power
switch is turned off, a check
screen is displayed on the
multi-information display that
indicates whether “Traction Bat-
tery Cooler” is implemented.
When “No” is selected, the hybrid battery (traction battery) co oling sys-
tem does not operate.