heater TOYOTA PRIUS PRIME 2021 Owners Manual (in English)

TABLE OF CONTENTS4
PRIUS PRIME_OM_OM47D71U_(U)5-5. Using the driving support
systems
Toyota Safety Sense 2.0 ... 376
PCS (Pre-Collision
System) ........................... 384
LTA (Lane Tracing
Assist) ............................. 395
RSA (Road Sign
Assist) ............................. 410
Dynamic radar cruise
control with full-speed
range ............................... 414
Driving mode select
switch .............................. 430
BSM
(Blind Spot Monitor) ........ 432
• The Blind Spot Monitor
function ......................... 437
• The Rear Cross Traffic
Alert function ................. 440
Intuitive parking assist ....... 445
Parking Support Brake
function ........................... 455
S-APGS (Simple
Advanced Parking
Guidance System) .......... 467
Driving assist systems....... 501
5-6. Driving tips
Winter driving tips.............. 5076-1. Using the air conditioning
system and defogger
Automatic air conditioning
system (vehicles with
7-inch display) ................. 512
Automatic air conditioning
system (vehicles with
11.6-inch display) ............ 524
Remote Air Conditioning
System ............................ 535
Heated steering wheel/
seat heaters..................... 539
6-2. Using the interior lights
Interior lights list................. 541
• Front interior light .......... 542
• Front personal lights ...... 542
• Rear interior light ........... 543
6-3. Using the storage features
List of storage features ...... 544
• Glove box ...................... 545
• Console box .................. 545
• Cup holders ................... 546
• Bottle holders/
door pockets.................. 547
• Auxiliary boxes .............. 548
• Seat back pockets ......... 548
Luggage compartment
features ........................... 549
6Interior features

20Pictorial index
PRIUS PRIME_OM_OM47D71U_(U)
■Switches
Instrument cluster light control switch . . . . . . . . . . . . . . . . P. 194
S-APGS (Simple Advanced Parking Guidance System)
switch
*1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 470
VSC OFF switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 502
Automatic High Beam switch . . . . . . . . . . . . . . . . . . . . . . . . P. 358
“HUD” (Head-up display) switch
*1. . . . . . . . . . . . . . . . . . . . P. 255
Driving mode select switch . . . . . . . . . . . . . . . . . . . . . . . . . P. 430
EV/HV mode selection switch . . . . . . . . . . . . . . . . . . . . . . . . . P. 90
EV auto mode switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 90
Seat heater switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 540
Charging schedule switch . . . . . . . . . . . . . . . . . . . . . . . . . . P. 161
Window lock switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 314
Outside rear view mirror switch . . . . . . . . . . . . . . . . . . . . . . P. 312
Door lock switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 283
Power window switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 314
1
2
3
4
5
6
7
8
9
10
11
12
13
14

PRIUS PRIME_OM_OM47D71U_(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. 214, 230, 237, 254) is being
displayed on the multi-information display etc., EV driving (driving using only
the electric motor) may be canceled and both gasoline engine and 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 circumstances:
●When vehicle speed is more than approximately 84 mph (135 km/h).
●When power is needed temporarily, for example when the accelerator 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. 515, 527)
●<003a004b0048005100030057004b004800030056005c00560057004800500003004700480057004800550050004c00510048005600030057004b0044005700030057004b00480003004a004400560052004f004c00510048000300480051004a004c005100
48000300510048004800470056000300570052000300450048[ started.
The gasoline engine may also operate in circumstances other than 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. 515, 527)
*: Depending on the circumstances, the gasoline engine may also not stop
automatically in situations other than those above.

PRIUS PRIME_OM_OM47D71U_(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 the
air conditioning system and reduce electricity and fuel consump-
tion as well.
In winter: Avoid excessive and unnecessary use of the heater.
Usage of the heated steering wheel (if equipped) and seat heat-
ers is effective. (P. 5 3 9 )
●Using the Remote Air Conditioning System (P. 535) while the
charging cable is connected to the vehicle can reduce electricity
consumption immediately after starting off by operating air condi-
tioning mainly using electricity from an external power source.
●When setting the charging schedule, selecting the start time set-
ting mode and setting “Climate Prep” to “On” can reduce electric-
ity consumption immediately after starting off by operating air
conditioning before 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 there is
improper tire inflation pressure 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 to increased fuel and electricity consumption.
◆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_OM47D71U_(U)
2-2. Charging
The illumination/flashing pattern
changes to inform the user of the
charging status in the following
ways.
*: Turns off after flashing for a certain period of time.
■Charging indicator
When a system malfunction occurs while charging or using the Remote Air
Conditioning System, the charging indicator rapidly flashes for a certain
period of time, and then turns off.
If this occurs, the next time the hybrid system is started, a message 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)
*
When charge schedule is registered (P. 157) and
charging cable is connected to vehicle
Rapidly flashing*
When 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 schedule (P. 157) is on
standby
• When charging is completed

PRIUS PRIME_OM_OM47D71U_(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 local 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 adaptor, 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).
The leakage detection function of the
CCID (Charging Circuit Interrupting
Device) may not operate correctly.
●Do not connect to a power strip.
ITO12P109
ITO12P110

PRIUS PRIME_OM_OM47D71U_(U)
1352-2. Charging
2
Plug-in hybrid system
■Charging time may increase
In the following situations, charging time may become longer than 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 the 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)
●<003a004b0048005100030057004b004800030053004f0058004a0003004a004800510048005500440057004800560003004b0048004400570003004700580048000300570052000300440003004f00520052005600480003005200580057004f0048005700
030046005200510051004800460057004c0052005100030048[tc.
■Using a DC Charger
DC Chargers cannot be used with this vehicle.
This vehicle is equipped with several 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 function automatically warms the hybrid
battery (traction battery) until it reaches or exceeds a certain 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 schedule is used (P. 157), this function will
operate according to the charging schedule.
Charging-linked functions

136
PRIUS PRIME_OM_OM47D71U_(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” automatically
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 the vehicle.
●When this control operates, charging schedule settings are
ignored and charging starts.
■“Traction Battery Cooler”
When the hybrid battery (traction battery) is hot, this function pro-
tects it by using the vehicle air conditioning to cool it before
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) cooling sys-
tem does not operate.

PRIUS PRIME_OM_OM47D71U_(U)
1372-2. Charging
2
Plug-in hybrid system
■“Traction Battery Heater”
●“Traction Battery Heater” may operate when charging is not being per-
formed.
●When “Traction Battery Heater” is operating, the charging indicator illumi-
nates.
●When “Traction Battery Heater” is operating during charging, the charging
time may be longer than normal.
●If the outside temperature becomes high while “Traction Battery Heater” is
operating, charging may complete earlier than the “Departure” time set.
(P. 157)
●“Traction Battery Heater” can be turned on and off in the “Vehicle Settings”
settings on the multi-information display. (P. 753)
●“Traction Battery Heater” may operate even when the hybrid battery (trac-
tion battery) is fully charged depending on the temperature of the hybrid bat-
tery (traction battery).
• The remaining charge of the hybrid battery (traction battery) decreases
when “Traction Battery Heater” operates. The charging operation may
start again to charge the hybrid battery (traction battery).
• “Charging Stopped Due to Pulled Charging Connector” may be shown
when the charging connector is removed while recharging. (P. 185)

PRIUS PRIME_OM_OM47D71U_(U)
1432-2. Charging
2
Plug-in hybrid system
■Capacity reduction of the hybrid battery (traction battery)
The capacity of the hybrid battery (traction battery) will decline gradually
when the hybrid battery (traction battery) is in use. The rate at which it
declines will differ in accordance with environmental conditions and the way
in which the vehicle is used. Observing the following can help suppress bat-
tery capacity decline.
●Avoid parking the vehicle in areas with a high temperature under direct sun-
light when the hybrid battery (traction battery) is fully charged.
●Avoid accelerating and decelerating frequently and suddenly when EV driv-
ing.
●Avoid frequent driving near the top speed for EV driving. (P. 95)
●Leave a low level of charge in the hybrid battery (traction battery) when
<004f004800440059004c0051004a00030057004b0048000300590048004b004c0046004f004800030058005100470055004c0059004800510003004900520055000300440003004f00520051004a0003005300480055004c00520047000300520049000300
57004c005000480011[
After confirming that EV mode has switched to HV mode, turn the power
switch off.
●Use the charging schedule function as much as possible in order to fully
charge the hybrid battery (traction battery) immediately before starting
off. (P. 157)
Also, if the hybrid battery (traction battery) capacity reduces, the distance that
can be driven in EV mode decreases. However, vehicle performance does
not significantly become worse.
■When the remaining charge of the hybrid battery (traction battery) is low
after charging
In the following situations, the remaining charge of the hybrid battery (traction
battery) after charging completes may be less than normal in order to protect
the system (the EV driving range after the battery is fully charged may be
shorter).
*
●<0026004b00440055004a004c0051004a0003004c005600030046004400550055004c0048004700030052005800570003005a004b0048005100030057004b004800030052005800570056004c00470048000300570048005000530048005500440057005800
5500480003004c00560003004f0052005a0003005200550003[high
●Charging is carried out immediately after high-load driving or in extreme
heat
When none of the above situations apply and there is a drastic drop in the
remaining charge of the hybrid battery (traction battery) after charging com-
pletes, have the vehicle inspected by your Toyota dealer.
*: When this occurs, even if the remaining charge display of the hybrid battery
(traction battery) shows that it is fully charged, the remaining charge rapidly
decreases faster than normal.
■When the charging amount sent to the hybrid battery (traction battery)
decreases
When the amount of power supplied by the charger is low or operation of the
“Traction Battery Heater”, etc., reduces the charging power sent to the hybrid
battery (traction battery), the charging amount sent to the hybrid battery (trac-
tion battery) may decrease.