2023 TOYOTA RAV4 PRIME cooling

822-1. Plug-in hybrid system
●Relay operating sounds such as a
snap or soft clank will be emitted
from the hybrid battery (traction
battery), under the rear seats or
under the floor, when the hybrid
system is started or stopped.
●Sounds from the hybrid system
may be heard when the back door
is open.
●Sounds may be heard from the
transmission when the gasoline
engine starts or stops, when driv-
ing at low speeds, or during idling.
●Engine sounds may be heard
when accelerating sharply.
●Sounds may be heard due to
regenerative braking when the
brake pedal is dep ressed or as
the accelerator pedal is released.
●Vibration may be felt when the
gasoline engine starts or stops.
●Cooling fan sounds may be heard
from the air intake vent under the
rear seat. ( P.89)
●Sounds may be heard from near
the hybrid battery (traction battery)
in accordance with the operation
of the air conditioning system or
battery cooler. ( P.114)
■Maintenance, repair, recycling,
and disposal
Contact your Toyota dealer regard-
ing maintenance, repair, recycling
and disposal. Do not dispose of the
vehicle yourself.
In order to make EV mode or
AUTO EV/HV mode available,
charge the hybrid battery (trac-
tion battery) from an external
power source before using the
vehicle.
Even if charging t he hybrid battery
(traction battery) has not been com- pleted, the vehicle can be driven.
However, if there is not enough
charge remaining, it is possible that
the vehicle cannot be driven in EV
mode or AUTO EV/HV mode or the
EV driving ra
nge will become
shorter.
■Refilling fuel
Plug-in Hybrid Electric Vehicles can
be driven using electricity charged
from an external power source.
However, as the ga soline engine is
used depending on the situation
(  P.80) even if in EV mode or
AUTO EV/HV mode, and the gaso-
line engine is provided on board as
a power source for driving in HV
mode, it is needed to refueling the
vehicle.
Check the fuel a mount and refill
immediately when the fuel level
becomes low. ( P.332)
■If the vehicle is not used for a
long time
●The 12-volt battery may dis-
charge. In this e vent, charge the
12-volt battery. ( P.569)
In order to prevent the hybrid bat-
tery (traction batt ery) from becom-
ing extremely low in charge,
charge the hybrid battery (traction
battery) from external power
source or start th e hybrid system
Charging (P.97)

892-1. Plug-in hybrid system
2
Plug-in hybrid system
There is an air intake vent under
the rear seat for cooling the
DC/DC converter.
Blocking the air intake vent may
prevent the plug-in hybrid sys-
tem from operating properly.When a certain level of impact is
NOTICE
■Notice about fuel
●For Plug-in Hybrid Electric Vehi-
cles, fuel may remain in the tank
for a long time and undergo
changes in quality depending
on the how the vehicle is used.
Refuel at least 5.3 gal. (20 L,
4.4 Imp.gal.) of fuel every 12
months (refuel a total of at least
5.3 gal. [20 L, 4.4 Imp.gal.] over
a 12-month period), as this may
affect components of the fuel
system or the gasoline engine.
●If the vehicle has not been refu-
eled for a certain amount of time
and it is possible that the quality
of the fuel remaining in the tank
has changed, “No New Fuel has
been Added Recently Please
refuel” is displayed on the multi-
information display when the
power switch is turned to ON. If
the message is displayed, refuel
the vehicle immediately.
DC/DC converter air
intake vent
NOTICE
■DC/DC converter air intake
vent
●Make sure not to block the air
intake vent with anything, such
as a seat cover, plastic cover, or
luggage. Blocking the air intake
vent may prevent the plug-in
hybrid system from operating
properly.
●When dust etc. has accumu-
lated in the air intake vent, clean
it with a vacuum cleaner to pre-
vent the vent from clogging.
●Do not wet or allow foreign sub-
stances to enter the air vent as
this may cause a short circuit
and damage the DC/DC con-
verter.
●Do not carry large amounts of
water such as water cooler bot-
tles in the vehicle. If water spills
onto the DC/DC converter, the
converter may be damaged.
Have the vehicle inspected by
your Toyota dealer.
●A filter is installed to the air
intake vent. When the filter
remains noticeably dirty even
after cleaning the air intake
vent, filter cleaning or replace-
ment is recommended. When
cleaning the filter, refer to
P.515.
●If “Maintenance required for
DCDC converter cooling parts
See Owner’s Manual” is shown
on the multi-information dis-
play, the air intake vent and fil-
ter may be clogged. Refer to
P.515 for information on how to
clean the air intake vent.
Emergency shut off sys-
tem

902-1. Plug-in hybrid system
detected by the impact sensor,
the emergency shut off system
blocks off the high voltage cur-
rent and stops the fuel pump to
minimize the risk of electrocu-
tion and fuel leakage.
If the emergency shut off system
activates, your vehicle will not
restart. To restart the hybrid sys-
tem, contact your Toyota dealer.
A message is automatically dis-
played when a malfunction
occurs in the hybrid system or
an improper operation is
attempted.
If a warning message is shown
on the multi-information display,
read the message and follow the
instructions.
■If a warning light comes on, a
warning message is displayed
or the 12-volt battery is discon-
nected
The hybrid system may not start. In
that case, try to start the system
again. If the “READY” indicator does
not come on, contact your Toyota
dealer.
Primarily using EV mode and
AUTO EV/HV mode when driv-
ing in cities and using HV mode
when driving on highways (or
freeways) can help conserve
fuel and electricity. ( P.76)
When using Eco drive mode, the
torque corresponding to the
accelerator pedal depression
amount can be generated more
smoothly than it is in normal
conditions. In addition, the oper-
ation of the air conditioning sys-
tem (heating/cooling) will be
minimized, improving fuel and
electricity economy. ( P.404)
Eco-friendly driving is possible
by keeping the Hybrid System
Indicator within Eco area.
( P.175, 181)
Hybrid warning message
Plug-in Hybrid Elec-
tric Vehicle driving
tips
For economical and ecolog-
ical driving, pay attention to
the following points:
Using EV mode, AUTO
EV/HV mode and HV
mode effectively
Using Eco drive mode
Use of Hybrid System
Indicator

942-1. Plug-in hybrid system
of occupants.
The distance that EV driving is
possible can be extended if the
following is performed:
■When starting off, depress
the accelerator pedal
smoothly to accelerate
As a guide, accelerate up to
approximately 12mph (20 km/h)
in the first 5 seconds.
Electrical and fuel efficiency can
be improved just by using the
ECO Accelerator Guidance dis-
played on the multi-information
display and taking care to start
off gently. ( P.187)
When the driving mode is set to
Eco drive mode, depressing the
accelerator pedal generates
smooth torque that makes it easier
to operate the accelerator gently.
At the same time, the air condition-
ing control is switched to eco air
conditioning mode ( P.423) to
reduce the strength of the air condi-
tioning operation.
■Maintain sufficient vehicle-
to-vehicle distance and do
not accelerate or decelerate
unnecessarily
Try to maintain a fixed speed
while driving. Driving at a short
vehicle-to-vehicle distance will
result in repeating wasteful
acceleration and deceleration,
which will worsen the electrical
and fuel efficiency.
■Release the accelerator
pedal early before stopping
the vehicle, such as at a
traffic light
The regenerative brake will
operate to convert the kinetic
energy of the vehicle into electri-
cal energy, which will charge the
hybrid battery (traction battery).
The regeneration status can be
checked from the Hybrid Sys-
tem Indicator. ( P.175)
When the brake pedal is
depressed lightly during decel-
eration, the regeneration
amount increases, enabling
more electrical energy to be
recovered.
If the brake pedal is depressed too
strongly, the recovered amount
indicator will reac h the maximum
level and the upper limit of the
recoverable energy will be
exceeded. Theref ore, be sure to
operate the brak e pedal early.
■Use the air conditioning
system appropriately, and
also utilize the heated steer-
ing wheel (if equipped) and
seat heaters
In EV mode, the vehicle is
cooled and heated by electrical
energy. (Except in extremely
cold temperatures of approxi-
mately 14°F (-10°C) or less.)
Preventing excessive cooling or
heating of the vehicle will reduce
power consumption and
improve electrical efficiency.

1142-2. Charging
peratures.
This control stops 31 days
after the AC 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.
■“Battery Cooler”
When the hybrid battery (trac-
tion battery) is hot and the AC
charging cable is connected to
the vehicle, this function cools
the hybrid battery (traction bat-
tery) before charging is carried
out.
 “Battery Cooler” will operate
when the “Battery Cooler” of
the “Charging Settings” on the
multi-information display is
on. ( P.193)
 When the charging voltage is
120 V, the function does not
operate.
■Traction battery heating and
cooling system (“Battery
Heater” and “Battery Cooler”)
●The system operates when the
hybrid battery (traction battery) is
below or above a c ertain tempera-
ture.
●The system may operate when
charging is not being performed.
●When the charging schedule is
used ( P.128), this function will
operate according to the charging
schedule.
■“Battery Heater”
●When “Battery Heater” is operat-
ing, the charging indicator illumi-
nates.
●When the AC charging cable is
removed from the vehicle or
remains connected to the vehicle
for approximately 3 days, the sys-
tem automatically stops.
●When “Battery Heater” is operat-
ing during charging, the charging
time may be longer than normal.
●If the outside temperature
becomes high w hile “Battery
Heater” is operating, charging
may complete ear lier than the
“Departure” or “ Departure time”
time set. ( P.128)
●When the following operations are
performed while “Battery Heater”
is operating, the hybrid battery
(traction battery) heating opera-
tion stops.
• The shift lever is changed to any position other than P
• The Remote Air Conditioning Sys- tem is operated ( P.431)
●“Battery Heater” may operate
even when the hybrid battery
(traction battery) is fully charged
depending on the temperature of
the hybrid battery (traction bat-
tery).
• The remaining charge of the hybrid battery (traction battery)
decreases when “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 connec-
tor is removed while recharging.
( P.158)
■“Battery Cooler”
●The charging indi cator is illumi-
nated while “Batter y Cooler” is on
standby or operating.
●“Battery Cooler” is implemented
for a maximum of approximately

1152-2. Charging
2
Plug-in hybrid system
30 minutes. However, when the
“Departure” or “Departure time”
time is set (P.128) and there is
not sufficient time between the
current time and the time that
charging will comp lete, “Battery
Cooler” operation time may
become shorter.
●When there is a small amount of
remaining charge in the hybrid
battery (traction battery), even if
the hybrid battery (traction battery)
is hot, “Battery Cooler” may not be
implemented.
●When the traction battery is
almost completely charged, “Bat-
tery Cooler” may not be imple-
mented.
●When the following operations are
performed while “Battery Cooler”
is operating, the hybrid battery
(traction battery) cooling operation
stops.
• The hood is opened
• The power switch is turned to any
mode other than off
• The Remote Air Conditioning Sys-
tem is operated ( P.431)
• “Charge Now” is implemented ( P.129)
●“Battery Cooler” uses the power of
the hybrid battery (traction battery)
and external power source.
• While “Battery Cooler” is operat- ing, the amount of the remaining
charge of the hybrid battery (trac-
tion battery) increases and
decreases in a certain range, and
does not increas e as in normal
charging.
• The operation of “Battery Cooler”
is recognized as charging by a
charger. The charger that calcu-
lates the fee according to charging
time causes a charging fee.
To enable the use of EV mode
or AUTO EV/HV mode, we rec-
ommend systematically
charging the vehicle.
■Before leaving home
In order to use EV mode or
AUTO EV/HV mode, charge the
hybrid battery (traction battery)
at home before leaving.
The charging schedule function
(  P.128) can be used to set the
system to automatically fully charge
the hybrid battery ( traction battery)
before your desired departure time.
It is also possible to set the air con-
ditioning to make the interior in a
comfortable stat e before your
desired departure time.
■At your destination
Use a public charging station to
Charging tips
This section explains meth-
ods for using the charging
function for this vehicle and
checking information
related to charging.
Systematically charging

1192-2. Charging
2
Plug-in hybrid system
Before charging, make sure that
each part of the AC charging
cable is in good condition.
(P.104)
■During charging
●The charging starting time may
differ depending on the state of
the vehicle, but this does not indi-
cate a malfunction.
●Cooling fan sounds may be heard
from near the rear seat. ( P.89)
●During charging, sounds may be
heard from near the hybrid battery
(traction battery) in accordance
with the operation of the air condi-
tioning system or “Battery Cooler”
( P.114).
●During and after charging, the rear
seat and its surrounding area in
which the onboard traction battery
charger is installed may get warm.
●The surface of the CCID
(Charging Circuit Interrupting
Device) may become hot, but this
does not indicate a malfunction.
●Depending on radio wave condi-
tions, interference may be heard
on the radio.
●The current charging condition
and the estimated time until
charging will complete can be
checked on the multi-information
display.
■Capacity reduction of the
hybrid battery (traction battery)
The capacity of the hybrid battery
(traction battery) will decline gradu-
ally when the hybrid battery (traction
battery) is in use. The rate at which
it declines will diffe r in accordance
with environmental conditions and
the way in which the vehicle is used.
Observing the following can help suppress battery capacity decline.
●Avoid parking the vehicle in areas
with a high temperature under
direct sunlight when the hybrid
battery (traction battery) is fully
charged.
●Avoid accelerating and decelerat-
ing frequently an
d suddenly when
EV driving.
●Avoid frequent driving near the top
speed for EV driving. ( P.80)
●Leave a low level of charge in the
hybrid battery (traction battery)
when leaving the vehicle undriven
for a long period of time.
After confirming that EV mode or
AUTO EV/HV mode has switched
t o H V m o d e , t u r n t h e p o w e r s w i t c h
off.
●Use the charging schedule func-
tion as much as possible in order
to fully charge the hybrid battery
(traction battery) immediately
before starting off. ( P.128)
Also, if the hybrid battery (traction
battery) capacity reduces, the dis-
tance that can be driven in EV mode
or AUTO EV/HV mode decreases.
However, vehicle performance does
not significantly become worse.
■When the remaining charge of
the hybrid battery (traction bat-
tery) is low a fter charging
In the following si tuations, the
remaining charge of the hybrid bat-
tery (traction batte ry) after charging
completes may be less than normal
in order to p rotect the system (the
EV driving range after the battery is
fully charged may be shorter).
*
●Charging is carried out when the
outside temperature is low or high.
●Charging is carried out immedi-
ately after high-load driving or in
extreme heat.
When none of the above situations
apply and there is a drastic drop in
the remaining char ge of the hybrid
battery (traction battery) after
Inspecting the AC
charging cable

1242-2. Charging
WARNING
●Check that the AC charging
cable, plug and outlet are free of
foreign matter.
●Before charging, check that the
AC charging inlet is not
deformed, damaged or cor-
roded, and check that the inlet
is free of foreign matter such as
dirt, snow and ice.
If there is dirt or dust in these
areas, remove completely
before inserting the charging
connector.
●Do not get the terminals of the
AC charging inlet wet.
●Only use outlets where the plug
can be securely inserted.
●Do not bundle or wind the AC
charging cable while charging,
as doing so may result in over-
heating.
●Do not touch the terminals of
the charging connector and AC
charging inlet with a sharp metal
objects (needles etc.) or hands,
or short them with foreign
objects.
●When charging outdoors, make
sure to connect to a weather-
proof outlet for outdoor use.
Ensure the weatherproof outlet
cover closes completely. If the
weatherproof outlet cover can-
not be closed, install a weather-
proof outlet cover that will close.
●In order to stop charging at the
charging station, follow the
instructions of the charger.
●If any heat, smoke, odors, noise
or other abnormalities are
noticed during charging, stop
charging immediately.
●Do not insert the plug if the out-
let is submerge d in water or
snow.
●When charging while it is raining
or snowing, do not connect or
disconnect the plug if your
hands are wet. Also, do not get
the plug or outlet wet.
●Do not charge the vehicle
during a lightning storm.
●Prevent the AC charging cable
from being caught in the door or
back door.
●Do not let the wheels on the AC
charging cable, plug, charging
connector and CCID (Charging
Circuit Interru pting Device).
●Firmly insert the plug into the
outlet.
●Do not use an extension cord
and converting adaptor.
●Close the hood before using the
charging system. The cooling
fan may start operating sud-
denly. Touching or getting close
to rotating parts such as the fan
may cause your hands or
clothes (especially a necktie or
scarf) to becom e caught and
result in a serious injury.
●After connecting the charging
cable, confirm that it is not
wound around anything.
●If the power indicator on the
CCID (Charging Circuit Inter-
rupting Device) does not illumi-
nate after plugging the AC
charging cable into the socket-
outlet, unplug it immediately.