2021 TOYOTA PRIUS PLUG-IN HYBRID stop start

2403. Instrument cluster
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Eco score
The driving status for the following 3 situations are evaluated in 5
levels: Smooth start-off acceleration (“Eco-Start”), driving without
sudden acceleration (“Eco-Cruise”) and smooth stopping (“Eco-
Stop”). Each time the vehicle is stopped, a score result is displayed
out of a perfect score of 100 points.
Score result
“Eco-Start” status
“Eco-Cruise” status
“Eco-Stop” status
How to read the bar display:
*: For items not currently evaluated, the display reads 0.
●The Eco score is reset each time the vehicle starts off to start a new
evaluation.
●When the shift position is P, only the Eco score display area is
enlarged and displayed. When the shift position is shifted from P,
the display returns to normal.
●When the hybrid system stops, the current total score result and
advice on how to increase the score are displayed. (P. 208)
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ScoreLow*High
Bar display

2433. Instrument cluster
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Instrument cluster
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Remaining charge amount warning of hybrid battery (traction battery)
●The buzzer sounds intermittently when the hybrid battery (traction battery)
remains without charging while the shift position is in N, or the remaining
charge amount drops below a certain level.
If the remaining charge amount drops further, the buzzer sounds continu-
ously.
●When a warning message is shown on the multi-information display and the
buzzer sounds, follow the instructions displayed on the screen to perform
troubleshooting.
■About the Eco score
●After starting off, Eco score display does not start until the vehicle speed
exceeds approximately 30 km/h (19 mph).
●In addition to the vehicle driving status, the Eco score also evaluates the air
conditioning system usage condition (P. 254). The score displayed when
the hybrid system stops is the total result of the driving status after the
hybrid system starts and the air conditioning usage condition.
■“EV Energy” and “EV Distance” display
The rate at which the “EV Energy” and “EV Distance” remaining amount
decreases depends on the driving conditions of the vehicle. Also, the “EV
Energy” and “EV Distance” remaining amount may decrease due to system
power consumption even though the vehicle is not being driven.

2693. Instrument cluster
3
Instrument cluster
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Enabling/disabling of the head-up display
When the head-up display is turned off with the “HUD” switch, it is not dis-
played until the “HUD” switch is used to turn the head-up display on again.
(Operation of the head-up display is not linked with the power switch.)
■Display brightness
●The brightness of the head-up display is automatically adjusted according to
the operation status of the headlights (on/off) and the brightness of the sur-
roundings.
●When the brightness of the head-up display is adjusted to a certain level or
higher, the display automatically dims when the vehicle is stopped. Once the
vehicle starts off and the vehicle speed reaches approximately 5 km/h
(3.1 mph) or more, the display automatically returns to its previous bright-
ness.
■Vehicle speed display
In extremely cold environments, the display of the speedometer and the vehi-
cle speed of the head-up display may slightly differ.
■Head-up display
The head-up display may seem dark and hard to see when viewed through
sunglasses, especially polarized sunglasses.
■When the 12-volt battery is disconnected
The customize settings of the head-up display will be reset.

2804-1. Key information
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Electronic key battery depletion
●The standard battery life is 1 to 2 years.
●If the battery becomes low, an alarm will sound in the cabin and a message
will be displayed on the multi-information display when the hybrid system
stops.
●As the electronic key always receives radio waves, the battery will become
depleted even if the electronic key is not used. The following symptoms indi-
cate that the electronic key battery may be depleted. Replace the battery
when necessary. (P. 688)
• The smart entry & start system or the wireless remote control does not
operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
You can replace the battery by yourself (P. 688). However, as there is a
danger that the electronic key may be damaged, it is recommended that
replacement is carried out by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer.
●To avoid serious deterioration, do not leave the electronic key within 1 m
(3 ft.) of the following electrical appliances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Table lamps
• Induction cookers

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.

2954-2. Opening, closing and locking the doors
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
4
Operation of each component
■ When “Smart Entry & Start System Malfunction See Owner’s Manual” is
displayed on the multi-information display
The system may be malfunctioning. Have the vehicle inspected by any autho-
rized Toyota retailer or Toyota authorized repairer, or any reliable repairer
immediately.
■ Battery-saving function
The battery-saving function will be activated in order to prevent the electronic
key battery and the 12-volt battery from being discharged while the vehicle is
not in operation for a long time.
● In the following situations, the smart entry & start system may take some
time to unlock the doors.
• The electronic key has been left in an area of approximately 2 m (6 ft.) of
the outside of the vehicle for 10 minutes or longer.
• The smart entry & start system has not been used for 5 days or longer.
● If the smart entry & start system has not been used for 14 days or longer,
the doors cannot be unlocked at any doors except the driver’s door. In this
case, take hold of the driver’s door handle, or use the wireless remote con-
trol or the mechanical key, to unlock the doors.
■ Electronic Key Battery-Saving Function
When battery-saving mode is set, battery depletion is minimized by stopping
the electronic key from receiving radio waves.
Press twice while pressing and
holding . Confirm that the electronic
key indicator flashes 4 times.
While the battery-saving mode is set, the
smart entry & start system cannot be
used. To cancel the function, press any of
the electronic key buttons.

2984-2. Opening, closing and locking the doors
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
●If the electronic key is inside the vehicle and a door handle becomes wet
during a car wash, a message may be shown on the multi-information dis-
play and a buzzer will sound outside the vehicle. To turn off the alarm, lock
all the doors.
●The lock sensor may not work properly if it comes into contact with ice,
snow, mud, etc. Clean the lock sensor and attempt to operate it again.
●A sudden approach to the effective range or door handle may prevent the
doors from being unlocked. In this case, return the door handle to the origi-
nal position and check that the doors unlock before pulling the door handle
again.
●If there is another electronic key in the detection area, it may take slightly
longer to unlock the doors after the door handle is gripped.
■When the vehicle is not driven for extended periods
●To prevent theft of the vehicle, do not leave the electronic key within 2 m
(6 ft.) of the vehicle.
●The smart entry & start system can be deactivated in advance. (P. 782)
■To operate the system properly
Make sure to carry the electronic key when operating the system. Do not get
the electronic key too close to the vehicle when operating the system from the
outside of the vehicle.
Depending on the position and holding condition of the electronic key, the key
may not be detected correctly and the system may not operate properly. (The
alarm may go off accidentally, or the door lock prevention may not operate.)
■If the smart entry & start system does not operate properly
●Locking and unlocking the doors: Use the mechanical key. (P. 751)
●Starting the hybrid system: P. 752
■Customization
Settings (e.g. smart entry & start system) can be changed.
(Customizable features: P. 782)
■If the smart entry & start system has been deactivated in a customized
setting
●Unlocking and locking the doors:
Use the wireless remote control or mechanical key. (P. 283, 751)
●Unlocking the charging port lid: P. 142
●Unlocking and locking the charging connector: P. 145
●Starting the hybrid system and changing power switch modes: P. 752
●Stopping the hybrid system: P. 374

3534-5. Opening and closing the windows
4
Operation of each component
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Jam protection function
If an object becomes jammed between the side window and the window
frame while the side window is closing, side window movement is stopped
and the side window is opened slightly.
■Catch protection function
If an object becomes caught between the door and side window while the
side window is opening, side window movement is stopped.
■When the window cannot be opened or closed
When the jam protection function or catch protection function operates
unusually and the side window cannot be opened and closed, perform the fol-
lowing operations with the power window switch of that door.
●Stop the vehicle. With the power switch in ON mode, within 4 seconds of the
jam protection function or catch protection function activating, continuously
operate the power window switch in the one-touch closing direction or one-
touch opening direction so that the side window can be opened and closed.
●If the side window cannot be opened and closed even when performing the
above operations, perform the following procedure for function initialization.
Turn the power switch to ON mode.
Pull and hold the power window switch in the one-touch closing direction
and completely close the side window.
Release the power window switch for a moment, resume pulling the
switch in the one-touch closing direction, and hold it there for approxi-
mately 6 seconds or more.
Press and hold the power window switch in the one-touch opening direc-
tion. After the side window is completely opened, continue holding the
switch for an additional 1 second or more.
Release the power window switch for a moment, resume pressing the
switch in the one-touch opening direction, and hold it there for approxi-
mately 4 seconds or more.
Pull and hold the power window switch in the one-touch closing direction
again. After the side window is completely closed, continue holding the
switch for a further 1 second or more.
If you release the switch while the side window is moving, start again from
the beginning.
If the side window reverses and cannot be fully closed or opened, have the
vehicle inspected by any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
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