2021 TOYOTA PRIUS PLUG-IN HYBRID ECU

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

1982-2. Charging
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
If “Charging Stopped Due to Pulled Charging Connector” is shown
Charging connector is not
securely connected
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 charging cannot be carried out, even
though the proper procedures were fol-
lowed, have the vehicle inspected by any
authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
Charging connector was
unlocked while chargingWhen the charging connector is unlocked
while charging, charging stops. To continue
charging, reconnect the charging connector.
If “Charging Complete Limited Due to Battery Temp” is shown
Charging was stopped to
protect the hybrid battery
(traction battery) as it contin-
ued to remain hot for a cer-
tain period of time.Allow the hybrid battery (traction battery) to
cool down and perform charging again if the
charging amount has not reached the
desired amount.
Likely causeCorrection procedure

2002-2. Charging
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
If “Charging Stopped Check Charging Source” is shown (2)
Charger is not compatible
with vehicleCheck if it is possible to charge with the
charging cable equipped to the vehicle.
If charging cannot be carried out, even
when using the genuine charging cable,
consult any authorized Toyota retailer or
Toyota authorized repairer, or any reliable
repairer.
Charger has stopped
charging
If “Charging Stopped Check Charging Source” is shown (3)
Problem in power supply
from external power source
Check the following items.
• Plug is securely inserted
• Extension cord is not used and socket is
not overloaded
• Connected to a dedicated power line
• Electrical leakage has occurred or not
If there is no problem with any of the above
items, there may be a problem with the
socket of the building. Contact an electrician
to request an inspection.
If charging cannot be carried out, even
though there is no problem with the power
source path, there may be a malfunction in
the system. Have the vehicle inspected by
any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer.
Charger has stopped
charging
Check if it is possible to charge with the
charging cable equipped to the vehicle.
If charging cannot be carried out, even
when using the genuine charging cable,
consult any authorized Toyota retailer or
Toyota authorized repairer, or any reliable
repairer.
Likely causeCorrection procedure

2173. Instrument cluster
3
Instrument cluster
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Front fog light indicator P. 397
Rear fog light indicator P. 397
Security indicator P. 74, 87
“READY” indicator P. 373
Shift position indicators P. 379
*1, 2Slip indicator light P. 560
*1, 3VSC OFF indicator P. 561
Cruise control indicator P. 462
Dynamic radar cruise control indicator P. 451
Cruise control “SET” indicator P. 451
*1, 3PCS warning light P. 422
*4LTA indicator P. 438
Steering control indicator P. 438
Adaptive High-beam System indicator P. 392
“BSM” indicator (if equipped) P. 473
IndicatorsPages

2834-2. Opening, closing and locking the doors
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
4
Operation of each component
Side doors
◆Smart entry & start system
Carry the electronic key to enable this function.
Grip the front door handle to
unlock all the doors.
Make sure to touch the sensor
on the back of the handle.
The doors cannot be unlocked
for 3 seconds after the doors are
locked.
Touch the lock sensor (the
indentation on the surface of
the front door handle) to lock
the doors.
Check that the door is securely locked.
◆Wireless remote control
Locks all the doors
Check that the door is securely
locked.
Press and hold to close the side
windows.
*
Unlocks all the doors
Press and hold to open the side
windows.
*
*
: These settings must be customized at any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
The vehicle can be locked and unlocked using the entry func-
tion, wireless remote control or door lock switches.
Unlocking and locking the doors from the outside
1
2
1
2

2844-2. Opening, closing and locking the doors
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Operation signals
The emergency flashers flash to indicate that the doors have been locked/
unlocked. (Locked: Once; Unlocked: Twice)
■Security feature
If a door is not opened within approximately 30 seconds after the vehicle is
unlocked, the security feature automatically locks the vehicle again.
■When the door cannot be locked by the lock sensor on the surface of the
door handle
■Door lock buzzer
If an attempt to lock the doors is made when a door is not fully closed, a
buzzer sounds continuously for 5 seconds. Fully close the door to stop the
buzzer, and lock the vehicle once more.
■Setting the alarm (if equipped)
Locking the doors will set the alarm system. (P. 87)
■If the smart entry & start system or the wireless remote control does not
operate properly
●Use the mechanical key to lock and unlock the doors. (P. 751)
●Replace the key battery with a new one if it is depleted. (P. 688) When the door cannot be locked even if
the lock sensor on the surface of the door
handle is touched by a finger, touch the
lock sensor with the palm.
When gloves are being worn, remove the
gloves.

2884-2. Opening, closing and locking the doors
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Back door
◆Smart entry & start system
Carry the electronic key to enable this function.
Locks all the doors
Check that the door is securely
locked.
Unlocks all the doors
The doors cannot be unlocked
for 3 seconds after the doors are
locked.
◆Wireless remote control
 P. 2 8 3
◆Door lock switches
 P. 2 8 5
Raise the back door while pushing
up the back door opener switch.
The back door can be unlocked/locked and opened/closed by
the following procedures.
1
2
Opening the back door from outside the vehicle

2914-2. Opening, closing and locking the doors
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
4
Operation of each component
WARNING
■ Operating the back door
Observe the following precautions.
Failure to do so may cause parts of the body to be caught, resulting in death
or serious injury.
● Remove any heavy loads, such as snow and ice, from the back door
before opening it. Failure to do so may cause the back door to suddenly
shut again after it is opened.
● When opening or closing the back door, thoroughly check to make sure
the surrounding area is safe.
● If anyone is in the vicinity, make sure they are safe and let them know that
the back door is about to open or close.
● Use caution when opening or closing the back door in windy weather as it
may move abruptly in strong wind.
● Do not pull on the back door damper stay to close the back door, and do
not hang on the back door damper stay.
Doing so may cause hands to be caught or the back door damper stay to
break, causing an accident.
● If a bicycle carrier or similar heavy object is attached to the back door, it
may suddenly shut again after being opened, causing someone’s hands,
head or neck to be caught and injured. When installing an accessory part
to the back door, using a genuine Toyota part is recommended.
● The back door may suddenly shut if it is
not opened fully. It is more difficult to
open or close the back door on an
incline than on a level surface, so
beware of the back door unexpectedly
opening or closing by itself. Make sure
that the back door is fully open and
secure before using the luggage com-
partment.
● When closing the back door, take extra
care to prevent your fingers etc. from
being caught.
● When closing the back door, make sure
to press it lightly on its outer surface. If
the back door handle is used to fully
close the back door, it may result in
hands or arms being caught.