2020 TOYOTA PRIUS PRIME stop start

PRIUS PRIME_OM_OM47C77U_(U)
992-1. Plug-in hybrid system
2
Plug-in hybrid system
There are air intake vents on both
sides of the rear seatback for the
purpose of cooling the hybrid bat-
tery (traction battery). If the vents
are blocked, charging/discharg-
ing of the hybrid battery (traction
battery) may become limited.
When a certain level of impact is detected by the impact sensor , the
emergency shut off system block s off the high voltage current and
stops the fuel pump to minimize the risk of electrocution and f uel leak-
age. If the emergency shut off s ystem activates, your vehicle will not
restart. To restart the hybrid s ystem, contact your Toyota deal er.
A message is automatically displ ayed 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.
Hybrid battery (traction battery) air vents
Emergency shut off system
Hybrid warning message

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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.

PRIUS PRIME_OM_OM47C77U_(U)
1372-2. Charging
2
Plug-in hybrid system
■“Traction Battery Heater”
●“Traction Battery Heater” may operate when charging is not bein g per-
formed.
● When “Traction Battery Heater” is operating, the charging indicator illumi-
nates.
● When “Traction Battery Heater” is operating during charging, th e 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” t ime set.
( P. 157)
● “Traction Battery Heater” can be turned on and off in the “Vehicle Settings”
settings on the multi-information display. ( P. 741)
● “Traction Battery Heater” may operate even when the hybrid batt ery (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 sho wn
when the charging connector is removed while recharging. ( P. 185)

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PRIUS PRIME_OM_OM47C77U_(U)
2-2. Charging
■“Traction Battery Cooler”
●When the hybrid battery (traction 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 Battery Co oler” is imple-
mented. Approximately 5 minutes after selecting “Yes” on this s creen, sys-
tem operation becomes possible.
● When charging starts, “Traction Battery Cooler” only operates i f the hybrid
battery (traction battery) temperature is hot.
● The charging indicator is illuminated while “Traction Battery C ooler” is on
standby or operating.
● “Traction Battery Cooler” is implemented for a maximum of approximately
30 minutes. However, when the “Departure” time is set ( P. 157) and there
is not sufficient time between the current time and the time that charging will
complete, “Traction Battery Cooler” operation time may become s horter.
● When there is a small amount of remaining charge in the hybrid battery
(traction battery), even if the hybrid battery (traction battery) is hot, “Traction
Battery Cooler” may not be implemented.
● When the following operations are performed while “Traction Bat tery Cooler”
is operating, the hybrid battery (traction battery) cooling operation stops.
• A door is opened
• The hood is opened
• The power switch is turned to any mode other than off
• The shift position is changed to any position other than P
• The Remote Air Conditioning System is operated ( P. 5 2 2 )
• “Charge Now” is implemented ( P. 1 5 8 )
• The amount of remaining charge in the hybrid battery (traction battery) is
below a certain amount
● When the power switch is turned off, a check screen is displayed on the
multi-information display that indicates whether “Traction Batt ery Cooler” is
implemented. This check screen can be turned on and off in the “Meter Cus-
tomize” settings on the multi-information display ( P. 246). However, when
the check screen is set to “Off”, “Traction Battery Cooler” is no longer oper-
ates.
● “Traction Battery Cooler” uses the power of the hybrid battery (traction bat-
tery) and external power source.
• While “Traction Battery Cooler” is operating, the amount of th e remaining
charge of the hybrid battery (traction battery) increases and d ecreases in
a certain range, and does not increase as in normal charging.
• The operation of “Traction Battery Cooler” is recognized as ch arging by a
charging equipment. The charging equipment that calculates the fee
according to charging time causes a charging fee.

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PRIUS PRIME_OM_OM47C77U_(U)
2-2. Charging
■Searching charging stations (vehicles with 11.6-inch display)
After applying to Entune, it is possible to use the smartphone application to
search the nearby charging stations.
For details about Entune, refer to http://www.toyota.com/entune/.
Information related to charging can be displayed and checked on the
vehicle’s multi-inform ation display or 11.6-inch display (if eq uipped).
Refer to P. 265 for details on the screen display for the 11.6- inch display (if
equipped).
■
While charging
When any door is opened
during charging, the current
charging condition and remain-
ing time until charging is com-
plete can be checked.
■After charging is complete
After charging is complete, the
first time that the hybrid system
is started, a message detailing
the results of the charging is
displayed. Also, a message is
displayed if an operation that
stops charging is performed or
a situation where charging can-
not be performed occurs.
When a message is displayed, follow the instructions displayed on the
screen. ( P. 185)
■Combination meter display during charging
If approximately 100 seconds elapse after the power switch is t urned to ON
mode during charging, the power switch will automatically turn off and the dis-
play will disappear.
Checking information related to charging

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PRIUS PRIME_OM_OM47C77U_(U)
2-2. Charging
Before charging, always check the following items.
● The parking brake is applied. ( P. 349)
● The headlights are switched off or set to AUTO, and lights such as
the emergency flashers and interi or lights etc. are switched off.
If these light switches are turned ON, then these features will consume
electricity, and charging time will increase.
●The power switch is off. ( P. 3 3 6 )
Before charging, make sure that each part of the charging cable is in
good condition. ( P. 120)
■Safety functions
●The hybrid system will not start while the charging cable is at tached to the
vehicle, even if the power switch is operated.
● If the charging cable is connected while the “READY” indicator is illumi-
nated, the hybrid system will stop automatically and driving wi ll not be possi-
ble.
● When the charging cable is connected to the vehicle, the shift position can-
not be changed from P to another position.
■ During charging
The followings occur, however, it does not indicate a malfuncti on.
● The charging starting time may differ depending on the state of the vehicle.
● During charging, the sound of the fan may be heard from the cha rging
equipment cooling air intake vents. ( P. 145)
● During and after charging, the rear seat and its surrounding ar ea in which
the charging equipment is installed may get warm.
Confirm the following before charging
Inspecting the charging cable

PRIUS PRIME_OM_OM47C77U_(U)
1512-2. Charging
2
Plug-in hybrid system
Remove the plug from the out-
let when the charging equip-
ment will not be used for a
prolonged period of time.
Hold the body of the plug when
removing.
Make sure to put the cable away
immediately after disconnecting.
(P. 155)
When leaving the plug inserted, inspect the plug and connector once a
month to check if dirt or dust has accumulated.
■ Charging time
P. 134
■ Safety function
If the latch release button is pressed, charging will not begin even if the
charging cable is connected.
Also, charging will be stopped if the latch release button is pressed and held
for several seconds during charging. When restarting charging, reinsert the
charging connector after pulling it out, and check that the charging indicator
illuminates.
■ When the outside tempe rature is low or high
The level shown on the remaining charge display ( P. 229) may drop slightly
when the power switch is turned to ON mode, even if charging ha s been com-
pleted and the hybrid battery (traction battery) is fully charg ed. However, this
does not indicate a malfunction.
■ Charging time may increase
P. 135
■ While charging
When the power switch is turned to ON mode and the energy monitor dis-
plays, the charging connector is displayed on the energy monito r and the flow
of electricity during charging is displayed ( P. 221). Also, when the charging
connector is locked, is displayed.
*
*
: Vehicles with smart lid & connector locking system only
5

PRIUS PRIME_OM_OM47C77U_(U)
1692-2. Charging
2
Plug-in hybrid system
■To return to original setting after changing “Next Charging Eve nt” set-
ting
Turning the setting of “Charge Now” on and then off can return the setting of
“Next Charging Event” to its original setting.
■ When “Next Charging Event” is changed while charging
●When the charging mode is “Departure”, the current charging is interrupted
or continued depending on the remaining time until the charging is com-
pleted.
● When the charging mode is “Start”, the current charging is interrupted, the
next charging will start at the set time.
■ When the power switch is turned off
*2: When the power switch is turned off, the “Next Charging Event” confirma-
tion screen may be displayed.
It is possible to check the next charge
schedule (“Next Charging Event”) by oper-
ating or of the meter control
switches while the power switch is turned
off and the “Ending” screen
*1 (
 P. 196) is
displayed.
*2
*1: The “Ending” screen may not be dis- played during charging.
WARNING
■ Cautions while performing the setting operation
When performing the setting operation while the hybrid system is operated,
ensure that the vehicle is parked in a place with adequate vent ilation. In a
closed area such as a garage, exhaust gases including harmful c arbon
monoxide (CO) may collect and enter the vehicle. This may lead to death or
a serious health hazard.
NOTICE
■ While performing the setting operation
When performing the setting operation while the hybrid system is stopped,
be careful that the 12-volt battery will not be discharged.