stop start TOYOTA PRIUS 2023 Owners Manual

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PRIUS_OM_OM47F32E_(EE)
7-1. Essential information
Emergency flashers ...........568
If your vehicle has to
be stopped in an
emergency .......................569
If the vehicle is submerged
or water on the road is
rising ................................570
7-2. Steps to take in an
emergency
If your vehicle needs
to be towed ......................572
If you think something is
wrong ...............................579
If a warning light turns on
or a warning buzzer
sounds .............................580
If a warning message is
displayed .........................589
If you have a flat tire
(vehicles without
spare tire) ........................598
If you have a flat tire
(vehicles with
spare tire) ........................618
If the hybrid system will
not start............................634
If the electronic key does
not operate properly ........636
If the 12-volt battery is
discharged .......................639
If your vehicle
overheats .........................645
If the vehicle becomes
stuck ................................650
8-1. Specifications
Maintenance data
(fuel, oil level, etc.) .......... 654
Fuel information ................ 668
8-2. Customization
Customizable features ...... 670
8-3. Initialization
Items to initialize................ 679
7When trouble arises8Vehicle specifications

16Pictorial index
PRIUS_OM_OM47F32E_(EE)
■Instrument panel (Left-hand drive vehicles)
Power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 244
Starting the hybrid system/changing the modes . . . . . . . . . . . P. 244
Emergency stop of the hybrid system . . . . . . . . . . . . . . . . . . . P. 569
When the hybrid system will not start . . . . . . . . . . . . . . . . . . . P. 634
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 589
Shift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 253
Changing the shift position . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 253
Precautions against towing . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 572
P position switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 254
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 100
Reading the meters/adjusting the instrument
cluster light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 100, 102
Warning lights/indicator lights . . . . . . . . . . . . . . . . . . . . . . . . . P. 110
When the warning lights come on . . . . . . . . . . . . . . . . . . . . . . P. 580
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22Pictorial index
PRIUS_OM_OM47F32E_(EE)
■Instrument panel (Right-hand drive vehicles)
Power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 244
Starting the hybrid system/changing the modes . . . . . . . . . . . P. 244
Emergency stop of the hybrid system . . . . . . . . . . . . . . . . . . . P. 569
When the hybrid system will not start . . . . . . . . . . . . . . . . . . . P. 634
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 589
Shift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 253
Changing the shift position . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 253
Precautions against towing . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 572
P position switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 254
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 100
Reading the meters/adjusting the instrument
cluster light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 100, 102
Warning lights/indicator lights . . . . . . . . . . . . . . . . . . . . . . . . . P. 110
When the warning lights come on . . . . . . . . . . . . . . . . . . . . . . P. 580
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331-1. For safe use
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PRIUS_OM_OM47F32E_(EE)
For safety and security
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
● Do not adjust the position of the driver’s seat while driving.
Doing so could cause the driver to lose control of the vehicle.
● Do not place a cushion between the driver or passenger and the seatback.
A cushion may prevent correct posture from being achieved, and reduce
the effectiveness of the seat belt and head restraint.
● Do not place anything under the front seats.
Objects placed under the front seats may become jammed in the seat
tracks and stop the seat from locking in place. This may lead to an acci-
dent and the adjustment mechanism may also be damaged.
● Always observe the legal speed limit when driving on public roads.
● When driving over long distances, take regular breaks before you start to
feel tired.
Also, if you feel tired or sleepy while driving, do not force yourself to con-
tinue driving and take a break immediately.

801-4. Hybrid system
PRIUS_OM_OM47F32E_(EE)
◆When stopped/during start off
The gasoline engine stops* when the vehicle is stopped. During
start off, the electric motor (traction motor) drives the vehicle. At
slow speeds or when traveling down a gentle slope, the engine is
stopped* and the electric motor (traction motor) is used.
When shift position is in N, the hybrid battery (traction battery) is not
being charged.
*: When the hybrid battery (traction battery) requires charging or the engine
is warming up, etc., the gasoline engine will not automatically stop.
( P. 81)
◆During normal driving
The gasoline engine is predominantly used. The electric motor
(traction motor) charges the hybrid battery (traction battery) as nec-
essary.
◆When accelerating sharply
When the accelerator pedal is depressed heavily, the power of the
hybrid battery (traction battery) is added to that of the gasoline
engine via the electric motor (traction motor).
◆When braking (regenerative braking)
The wheels operate the electric motor (traction motor) as a power
generator, and the hybrid battery (traction battery) is charged.
When driving with the gasoline engine stopped, a sound, which
changes in accordance with the driving speed, will be played in order
to warn people nearby of the vehicle’s approach. The sound will stop
when the vehicle speed exceeds approximately 25 km/h (16 mph).
Vehicle proximity notification system

811-4. Hybrid system
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PRIUS_OM_OM47F32E_(EE)
For safety and security
■Regenerative braking
● In the following situations, kinetic energy is converted to electric energy and
deceleration force can be obtained in c onjunction with the recharging of the
hybrid battery (traction battery).
• The accelerator pedal is released while driving with the shift position in D
or B.
• The brake pedal is depressed while driv ing with the shift position in D or
B.
● Vehicles with GPF system: While the GPF system (P. 440) is operating to
regenerate the exhaust gas filter, the hybrid battery (traction battery) may
not be recharged.
■ Hybrid System Indicator
■ Conditions in which the gasoline engine may not stop
The gasoline engine starts and stops automatically. However, it may not stop
automatically in the following conditions*:
● During gasoline engine warm-up
● During hybrid battery (traction battery) charging
● When the temperature of the hybrid battery (traction battery) is high or low
● When the heater is switched on
*: Depending on the circumstances, the gasoline engine may also not stop
automatically in situations other than those above.
■ Charging the hybrid battery (traction battery)
As the gasoline engine charges the hybrid battery (traction battery), the bat-
tery does not need to be charged from an outside source. However, if the
vehicle is left parked for a long time the hybrid battery (traction battery) will
slowly discharge. For this reason, be sure to drive the vehicle at least once
every few months for at least 30 minutes or 16 km (10 miles). If the hybrid
battery (traction battery) becomes fully discharged and you are unable to start
the hybrid system, contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
■ Charging the 12-volt battery
 P. 641
Hybrid System Indicator represents the
hybrid system power output and regener-
ative charging. ( P. 132)

821-4. Hybrid system
PRIUS_OM_OM47F32E_(EE)
■ After the 12-volt battery has discharged or when the terminal has been
removed and installed during exchange, etc.
The gasoline engine may not stop even if the vehicle is being driven by the
hybrid battery (traction battery). If this continues for a few days, contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
■ Sounds and vibrations specific to a hybrid vehicle
There may be no engine sound or vibration even though the vehicle is able to
move with the “READY” indicator is illuminated. For safety, apply the parking
brake and make sure to shift the shift position to P when parked.
The following sounds or vibrations may occur when the hybrid system is
operating and are not a malfunction:
● Motor sounds may be heard from the engine compartment.
● Sounds may be heard from the hybrid battery (traction battery) under the
rear seats when the hybrid system starts or stops.
● Relay operating sounds such as a snap or soft clank will be emitted from the
hybrid battery (traction battery), under the rear seats, when the hybrid sys-
tem 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 driving 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
depressed 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. (P. 85)
■ Vehicle proximity notification system
In the following cases, the vehicle proximity notification system may be diffi-
cult for surrounding people to hear.
● In very noisy areas
● In the wind or the rain
Also, as the vehicle proximity notification system is installed on the front of
the vehicle, it may be more difficult to hear from the rear of the vehicle com-
pared to the front.
■ When “Proximity Notification System Malfunction Visit Your Dealer” is
displayed on the multi-information display
The vehicle proximity notification system may be malfunctioning. Have the
vehicle inspected by any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.

851-4. Hybrid system
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PRIUS_OM_OM47F32E_(EE)
For safety and security
There is an air intake vent under
the right side of the rear seat for
the purpose of cooling the hybrid
battery (traction battery). If the
vent is blocked, charging/dis-
charging of the hybrid battery
(traction battery) may become lim-
ited.
When a certain level of impact is detected by the impact sensor, the
emergency shut off system blocks the high voltage current and stops
the fuel pump to minimize the risk of electrocution and fuel leakage. If
the emergency shut off system activates, your vehicle will not restart.
To restart the hybrid system, contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
A message is automatically displayed 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 intake vent
Emergency shut off system
Hybrid warning message

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1-5. Theft deterrent system
PRIUS_OM_OM47F32E_(EE)
For safety and security
Immobilizer system
The indicator light flashes after
the power switch has been turned
off to indicate that the system is
operating.
The indicator light stops flashing
after the power switch has been
turned to ACCESSORY or ON
mode to indicate that the system
has been canceled.
■ System maintenance
The vehicle has a maintenance-free type immobilizer system.
■ Conditions that may cause the system to malfunction
● If the grip portion of the key is in contact with a metallic object
● If the key is in close proximity to or touching a key registered to the security
system (key with a built-in transponder chip) of another vehicle
The vehicle’s keys have built-in transponder chips that prevent
the hybrid system from starting if a key has not been previously
registered in the vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehi-
cle.
This system is designed to help prevent vehicle theft but does not
guarantee absolute security against all vehicle thefts.
NOTICE
■ To ensure the system operates correctly
Do not modify or remove the system. If modified or removed, the proper
operation of the system cannot be guaranteed.

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1-5. Theft deterrent system
PRIUS_OM_OM47F32E_(EE)
For safety and security
Alar m
The alarm uses light and sound to give an alert when an intrusion is
detected.
The alarm is triggered in the following situations when the alarm is
set:
● A locked door or back door is unlocked or opened in any way other
than using the entry function or wireless remote control. (The doors
will lock again automatically.)
● The hood is opened.
● If equipped, the intrusion sensor detects something moving inside
the vehicle. (An intruder gets in the vehicle.)
Close the doors and hood, and
lock all the doors using the entry
function or wireless remote con-
trol. The system will be set auto-
matically after 30 seconds.
The indicator light changes from
being on to flashing when the sys-
tem is set.
Do one of the following to deactivate or stop the alarm.
● Unlock the doors using the entry function or wireless remote con-
trol.
● Start the hybrid system. (The alarm will be deactivated or stopped
after a few seconds.)
: If equipped
The alarm
Setting the alarm system
Deactivating or stopping the alarm