2020 TOYOTA PRIUS PLUG-IN HYBRID charging

1882-2. Charging
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Solar charging system
This system generates solar power with the solar panel equipped to
the roof of the vehicle (solar roof).
●The hybrid battery (traction battery) is charged
* while parking.
After the solar power is stored in the solar battery, it is transferred
all at once to the hybrid battery (traction battery) to reduce the sys-
tem electrical consumption and charge the battery efficiently.
●The electrical consumption of the hybrid battery (traction battery) is
reduced during driving.
The electrical consumption of the hybrid battery (traction battery) is
suppressed increasing EV driving distance and fuel economy by
supplementing power consumption for the auxiliary systems using
solar power.
*: The maximum charge amount of the solar charging system is approxi-
mately 90% of the fully charged capacity for the charging from an external
power source.
: If equipped
A system that provides power to the hybrid battery (traction bat-
tery) and auxiliary systems by performing solar charging via the
large solar panel (solar roof) equipped on the vehicle roof.
Even when a parking lot does not have charging equipment and in
the event of a disaster, it is possible to charge
* the hybrid battery
(traction battery) without any special operations as long as sunlight
is available.
*: The charging amount via the solar charging system differs depending on
conditions, such as season and weather. Also, there is a limit on the
amount of charging possible per day. It requires at least approximately 10
days to charge to the maximum possible charging amount via the solar
charging system.
Solar charging system operation

1892-2. Charging
2
Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
12-volt battery
Solar roof
Solar battery (inside console box)
Solar ECU
Hybrid battery (traction battery)
Information related to the solar
charging system can be checked
with (Drive information) on
the multi-information display.
(P. 235, 248)
Displaying information related to the solar charging system
1
2
3
4
5

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.

1912-2. Charging
2
Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Solar battery
When the solar roof is not exposed to sunlight or the vehicle is not driven for a
long period of time, the solar battery may be discharged, negatively affecting
the system.
If storing the vehicle inside of a garage away from the sun or if the vehicle will
not be used for a long period of time, use one of the following methods to
charge the solar battery at least once every 2 to 3 months.
● Start the hybrid system and keep the READY indicator turned on for approx-
imately 60 minutes or more
● Park the vehicle outside of the garage so that the solar roof is in direct sun-
light for approximately 2 hours or more
(In this case, it is not necessary to start the hybrid system)
NOTICE
■ To protect the solar charging system from damage
● Make sure to observe the following precautions.
• Do not modify the solar roof
• Do not condense sunlight onto the solar roof
• Do not place anything on top of the solar roof
• Do not subject the solar roof to strong impacts or apply force with sharp
objects from the inside roof of the vehicle.
● If the solar roof is damaged, do not touch the damaged area and immedi-
ately request repairs from any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
■ If luggage is loaded on the roof
 P. 371

1922-2. Charging
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
When normal charging cannot be carried
out
Refer to the following table and carry out the appropriate correction
procedure.
When charging does not start, even though the normal proce-
dure is followed, check each of the following items.
If a message is shown on the multi-information display, also refer to
P. 197.
When normal charging cannot be carried out
Likely causeCorrection procedure
The power source indicator on the CCID (Charging Circuit Interrupting
Device) does not illuminate, even though the plug is connected to an
external power source.
Plug is not properly con-
nected to socketCheck that the plug is properly connected to
the socket.
Power is outAfter power is restored, carry out the
charging procedure again.
Remote switch is offIf the remote switch is equipped, turn the
switch on.
Building breaker is tripped
and power is cut off
Check that the breaker is connected and if
there is no malfunction, check if the vehicle
can be charged through another socket.
If charging is possible, the first socket may
have a malfunction. Contact the building or
facility manager, or an electrician.
Short circuit between CCID
(Charging Circuit Interrupting
Device) and plugImmediately stop charging and contact any
authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.

1932-2. Charging
2
Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
The error warning indicator on the CCID (Charging Circuit Interrupting
Device) flashes.
Electrical leakage detection
function or self- diagnostic
function operates and power
is cut off
When the voltage is insufficient, the error
warning indicator may flash when there is
noise interference. Perform a reset and con-
nect to a proper power source. (P. 130)
If charging does not start, immediately stop
charging and contact any authorized Toyota
retailer or Toyota authorized repairer, or any
reliable repairer.
Charging indicator does not illuminate, even though charging connector
is connected.
The plug is not properly con-
nected to the socketCheck whether the plug is properly con-
nected to the socket.
Charging connector is not
securely connected to
charging inlet
Check the connection status of the charging
connector.
• When connecting the charging connec-
tor, insert the charging connector
securely.
• After connecting the charging connector,
check that the charging indicator is turned
on.
If the charging indicator does not illuminate,
even though the charging connector is
securely connected, there may be a mal-
function in the system. Immediately stop
charging and contact any authorized Toyota
retailer or Toyota authorized repairer, or any
reliable repairer.
Hybrid battery (traction bat-
tery) is already fully chargedWhen the hybrid battery (traction battery) is
fully charged, charging is not performed.
The charger does not oper-
atePlease contact the facility manager when
there is a problem with charger.
Likely causeCorrection procedure

1942-2. Charging
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
*: Refer to P. 125 for details regarding charging indicator illumination and
flashing.
Refer to the following table and carry out the appropriate correction
procedure.
Charging indicator flashes and charging cannot be carried out.
When charging indicator
flashes
*:
Charge schedule is regis-
tered
When you wish to charge according to the
charging schedule, wait until the set time.
To start charging, set “Charge Now” to “On”.
(P. 184)
When charging indicator rap-
idly flashes
*:
Malfunction occurred in an
external power source or the
vehicleStart the hybrid system and follow the
instructions displayed by the message on
the multi-information display. (P. 197)
When charging schedule function does not operate normally
Likely causeCorrection procedure
Cannot charge at desired time
Vehicle clock is not properly
adjustedCheck the clock settings and adjust it to the
proper time. (P. 210)
The vehicle calendar is not
set correctly.Check the calendar setting and set it to the
correct date. (P. 212)
Charging cable is not con-
nected to vehicleBefore using the charging schedule, con-
nect the charging cable.
Incorrect charging mode
selected
Check the charging mode setting. (P. 1 7 6 )
When the charging mode is “Start”, charging
starts at the set time, but when it is “Depar-
ture”, charging is completed by the set time.
(The charging start time is automatically
controlled by the system.)
Likely causeCorrection procedure

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