2023 TOYOTA PRIUS PRIME ECU

2575-2. Driving procedures
5
Driving
Shift lever
Operate the shift lever gently and
securely in the direction of the
arrow on the shift position indicator.
To shift to N, slide the shift lever in
the direction of the arrow and hold
it.
Release the shift lever after each
shifting operation to allow it to
return to its regular position ( ).
Shifting to B is only possible when the shift position is in D.
When shifting from P to N, D or R,
from N, D, B or R to P, from D or B
to R, or from R to
D, ensure that the
brake pedal is being depressed and
the vehicle is stationary.
Shift position indicator
Meter display:
The current shift po sition is illumi-
nated.
Shift lever display:
The current shift po sition is illumi-
nated.
When selecting the shift position,
make sure that the shift position
has been changed to the desired
position by checking the shift posi-
tion indicator provided on the
instrument cluster.
P position switch
Fully stop the vehicle and set the
parking brake, and then press the P
position switch.
When the shift position is changed
to P, the switch illuminates.
Check that the shift position indica-
tor shows P.
■Changing the shift position in
each power switch mode
●The shift position cannot be
changed when the power switch is
in ACC or off.
●When the power switch is in ON, if
the READY indicator is not illumi-
nated, the shift position can only
be changed to N.
●When the READY indicator is illu-
minated, the shift position can be
changed from P to D, N, or R.
●When the READY indicator is
flashing, the shift position cannot
be changed from P to any other
NOTICE
●When the warning message
indicating the shift control sys-
tem appears on the multi-infor-
mation display. ( P.566)
●The display indicates that no
shift position is selected for
more than a few seconds.
Shift position display and
how to change the shift
position
A
B
C

2795-4. Refueling
5
Driving
5-4.Refueling
Close all the doors and win-
dows, and turn the power
switch to OFF.
 Confirm the type of fuel.
■Fuel types
 P.607
■Fuel tank opening for unleaded
gasoline
To help prevent incorrect fueling,
your vehicle has a fuel tank opening
that only accommodates the spe-
cial nozzle on unleaded fuel pumps.
Opening the fuel tank
cap
The fuel tank of your vehicle
has a special structure,
which requires a reduction
in fuel tank pressure before
refueling. After the opener
switch has been pressed, it
will take several seconds
until the vehicle is ready for
refueling.
Before refueling the vehi-
cle
WARNING
■When refueling the vehicle
Observe the following precautions
while refueling the vehicle. Failure
to do so may result in death or
serious injury.
●After exiting the vehicle and
before opening the fuel door,
touch an unpainted metal sur-
face to discharge any static
electricity. It is important to dis-
charge static electricity before
refueling because sparks result-
ing from static electricity can
cause fuel vapors to ignite while
refueling.
●Always hold the grips on the
fuel tank cap and turn it slowly
to remove it.
A whooshing sound may be
heard when the fuel tank cap is
loosened. Wait until the sound
cannot be heard before fully
removing the cap. In hot
weather, pressurized fuel may
spray out of the filler neck and
cause injury.
●Do not allow anyone that has
not discharged static electricity
from their body to come close to
an open fuel tank.
●Do not inhale vaporized fuel.
Fuel contains substances that
are harmful if inhaled.
●Do not smoke while refueling
the vehicle.
Doing so may cause the fuel to
ignite and cause a fire.
●Do not return to the vehicle or
touch any person or object that
is statically charged. This may
cause static electricity to build
up, resulting in a possible igni-
tion hazard.
■When refueling
Observe the following precautions
to prevent fuel overflowing from
the fuel tank:
●Securely insert the fuel nozzle
into the fuel filler neck.
●Stop filling the tank after the fuel
nozzle automatically clicks off.

2815-4. Refueling
5
Driving
■When “Check Fuel Cap” is dis-
played on the multi-information
display
The fuel tank cap may be unfas-
tened or loose. Turn the power
switch to OFF, check the cap and
tighten it securely . If the message
remains, wait a few seconds and
then turn the power switch to OFF
once again.
WARNING
■When replacing the fuel tank
cap
Do not use anything but a genu-
ine Toyota fuel tank cap designed
for your vehicle. Doing so may
cause a fire or other incident
which may result in death or seri-
ous injury.

3165-5. Using the driving support systems
●When the system determines that
the driver is not securely holding
the steering wheel, or the steering
wheel is not being operated when
the steering assist operation of the
lane departure prevention function
is operating
Except for Puerto Rico: The length
of time that the warning buzzer
operates will become longer as the
frequency of the steering assist
operating increase s. If the system
judges that the steering wheel has
been operated, the warning buzzer
will stop.
For Puerto Rico: The length of time
that the warning buzzer operates
will become longer as the frequency
of the steering assist operating
increases. Even if the system
judges that the steering wheel has
been operated, the warning buzzer
will sound for a certain amount of
time.
■Break suggestion function
This function is operable when all of
the following conditions are met:
●The vehicle speed is approxi-
mately 40 mph (65 km/h) or
more.
*1
●The vehicle speed is approxi-
mately 32 mph (50 km/h) or
more.
*2
●The lane width is approximately
9.8 ft. (3 m) or more.
Depending on the condition of the
vehicle and road surface, the break suggestion function may not oper-
ate.
Press the meter control switch
to turn off the message.
*1
Unless is pressed, the message
of the break suggestion function will
remain displayed.
*1
*1
: For Puerto Rico
*2: Except for Puerto Rico
 The LDA system can be
enabled/disabled through a
customize setting. ( P.627)
 The settings of the LDA can
be changed on the customize
settings. ( P.627)
Changing LDA settings
WARNING
■Situations in which the sys-
tem may not operate properly
In the following situations, the
system may not operate properly
and the vehicle may depart from
its lane. Do not overly rely on
these functions. The driver is
solely responsible for paying
attention to their surroundings
and operating the steering wheel
as necessary to ensure safety.

3585-5. Using the driving support systems
adjacent lane at a much higher
speed than it*
*
: Depending on the situations, a buzzer may sound.
■Conditions under which the
system may not function cor-
rectly
●The Blind Spot Monitor may not
detect vehicles correctly in the fol-
lowing situations:
• When the sensor is misaligned
due to a strong impact to the sen-
sor or its surrounding area
• When mud, snow, ice, a sticker,
etc. is covering the sensor or sur-
rounding area on the rear bumper
• When driving on a road surface
that is wet with standing water
during bad weather, such as
heavy rain, snow, or fog
• When multiple vehicles are approaching with only a small gap
between each vehicle
• When the distance between your vehicle and a following vehicle is
short
• When there is a significant differ- ence in speed between your vehi-
cle and the vehicle that enters the
detection area
• When the difference in speed between your vehicle and another
vehicle is changing
• When a vehicle enters a detection area traveling at about the same
speed as your vehicle
• As your vehicle starts from a stop, a vehicle remains in the detection
area
• When driving up and down con- secutive steep inclines, such as
hills, dips in the road, etc.
• When driving on roads with sharp bends, consecutive curves, or
uneven surfaces
• When vehicle lanes are wide, or when driving on the edge of a
lane, and the vehicle in an adja-
cent lane is far away from your
vehicle
• When an accessory (such as a
bicycle carrier) is installed to the rear of the vehicle
• When there is a significant differ- ence in height between your vehi-
cle and the vehicle that enters the
detection area
• Immediately after the Blind Spot
Monitor is turned on
• When towing with the vehicle●Instances of the Blind Spot Moni-
tor unnecessarily detecting a vehi-
cle and/or object may increase in
the following situations:
• When the sensor is misaligned due to a strong impact to the sen-
sor or its surrounding area
• When the distance between your vehicle and a guardrail, wall, etc.
that enters the detection area is
short
• When driving up and down con-
secutive steep inclines, such as
hills, dips in the road, etc.
• When vehicle lanes are narrow, or
when driving on the edge of a
lane, and a vehicle traveling in a
lane other than the adjacent lanes
enters the detection area
• When driving on roads with sharp bends, consecutive curves, or
uneven surfaces
• When the tires are slipping or spinning
• When the distance between your vehicle and a following vehicle is
short
• When an accessory (such as a bicycle carrier) is installed to the
rear of the vehicle
• When towing with the vehicle

4185-5. Using the driving support systems
NOTICE
●In situations such as the follow-
ing, it may not be possible for
the system to provide assis-
tance to a registered parking
spot:
• When the appearance of the parking space is affected by the
shadow of the vehicle or trees
• When an object is detected in the registered parking space
• When a pedestrian or passing vehicle is detected during assis-
tance
• When the position the vehicle is stopped when assistance is
started differs from the position
when registration was per-
formed
• When the registered parking space cannot be reached due to
the existence of parking blocks,
etc.
• When the road surface around the parking space has changed
(road surface has degraded or
been resurfaced)
• When the sunlight conditions differ from when registration
was performed (due to weather
or time of day)
• When the sun is shining directly into a camera, such as in the
early morning or evening
• When the color or brightness of the road surface is uneven
• When a light is temporarily shined on the parking space
(lights of another vehicle, secu-
rity light, etc.)
• When the road surface around the parking space has the same
repeating pattern
• When there is a low protrusion on the road surface near the
parking space
• When the parking space is on a slope
• When a camera has been splashed by hot or cold water
and the lens has fogged up
• When a camera lens is dirty or covered with water droplets
• When accessories which obstruct the view of the camera
are installed
If assistance is ended during
registration, perform registration
again.
●When registering a parking
space to the memory function, if
the road surface cannot be
detected “No available parking
space to register” will be dis-
played.
●When using the memory func-
tion, make sure to stop immedi-
ately in front of the stop
position. Otherwise the parking
space may not be able to be
detected correctly or assis-
tance may not be provided to
the point that the vehicle is fully
parked.
●Do not use the memory function
if a camera has been subjected
to a strong impact or images of
the panoramic view monitor are
misaligned.
●If a camera has been replaced,
as the installation angle of the
camera will have c hanged, it will
be necessary to reregister park-
ing spaces of the memory func-
tion.

4546-3. Using the storage features
The cargo hooks are provided
for securing loose items.
1To use the rear cargo hook,
open the deck board.
2 Raise the hook to use, return
the deck board to its original
position and close it. 3
When using the front cargo
hook, raise the hook without
opening the deck board.
Luggage compart-
ment features
Cargo hooks
WARNING
■When the cargo hooks are not
in use
To avoid injury, always return the
cargo hooks to their stowed posi-
tions.
Deck under tray
WARNING
■Caution while driving
Keep the deck board closed.
In the event of sudden braking, an
accident may occur due to an
occupant being struck by the deck
board or the items stored in the
deck under tray.

4706-4. Using the other interior features
WARNING
●If the plug of a device fits
loosely in a power outlet, even
though it is fully inserted,
replace the power outlet. For
information on replacement,
contact your Toyota dealer.
■Devices to be connected
●Make sure to read any instruc-
tion manual which came with a
device and observe any warn-
ings on the device.
●Do not connect a device to a
power outlet if the device is mal-
functioning or its plug is dam-
aged.
●Otherwise, the device may be
further malfunctioning, espe-
cially when the outside tem-
perature is high or low.
●Devices requiring to be installed
on a level place may not oper-
ate properly.
●Do not use devices, other than
waterproof devices, in a place
where water, such as rain, is
splashed over or where it is
humid.
●Do not use a device that has
been or likely to have been
merged in water or absorbed
water within.
●Do not connect a medical
device, as depending on the
vehicle condition, the power
supply function may be tempo-
rarily stopped.
■When the power outlets are
used while the vehicle is
parked or stopped
●The power outlets are designed
to be connected to electric
devices, such as lighting
devices. Do not use them as a
generator that supplies power to
a house, etc. Also, when they
are to be used on an emer-
gency power supply device for
homes, such as an exclusive
device having connection to an
external power source, or a
device whose power supply cir-
cuit for external power source is
separate from electric wiring of
power companies, consult with
the manufacturer or a retailer of
the device.
●When using a power outlet,
make sure to securely engage
the parking brake and shift the
shift position to P. Otherwise,
the vehicle may move, possibly
leading to an accident.
●When using a power outlet, do
not move away from the vehicle.
●Do not perform power supply
during weather when lightning
may occur. Stop supplying
power if lightning is observed
during power supply.
●Do not use the power outlets if
the vehicle has a vehicle cover
installed.
●Do not use a power outlet when
the vehicle is parked on a
slanted place or a slope. When
a power outlet is being used, do
not move the vehicle or cause it
to be inclined.
●Observe the following precau-
tions when a connected cord is
to be brought outside the vehi-
cle: