2023 TOYOTA PRIUS PRIME Owners Manual

2655-2. Driving procedures
5
Driving
●The malfunction indicator lamp
and brake system warning light
are not illuminated
■If “Parking Brake Temporarily
Unavailable” is displayed on
the multi-information display
If the parking brake is operated
repeatedly over a short period of
time, the system may restrict opera-
tion to prevent overheating. If this
happens, refrain from operating the
parking brake. Normal operation will
return after about 1 minute.
■If “Parking Brake Unavailable”
is displayed on the multi-infor-
mation display
Operate the parking brake switch. If
the message does not disappear
after operating the switch several
times, the system may be malfunc-
tioning. Have the vehicle inspected
by your Toyota dealer.
■Parking brake operation sound
When the parking brake operates, a
motor sound (whirring sound) may
be heard.
This does not indicate a malfunc-
tion.
■Parking brake indicator light
●Depending on the power switch
mode, the parking brake indicator
light will turn on and stay on as
described below:
ON: Comes on un til the parking
brake is released.
Not in ON: Stays on for approxi-
mately 15 seconds.
●When the power switch is turned
off with the parking brake set, the
parking brake indicator light will
stay on for about 15 seconds. This
does not indicate a malfunction.
■When the parking brake switch
malfunctions
Automatic mode (automatic brake
setting and releasing) will be turned
on automatically.
■Parking the vehicle
 P.239
■Parking brake engaged warning
buzzer
A buzzer will sound if the vehicle is
driven with the parking brake
engaged.
“Parking Brake ON” is displayed on
the multi-information display (with
the vehicle reaching a speed of 3
mph [5 km/h]).
■If the brake system warning
light comes on
 P.555
■Usage in winter time
 P.430
WARNING
■When parking the vehicle
Do not leave a child in the vehicle
alone. The parking brake may be
released unintentionally by a child
and there is the danger of the
vehicle moving that may lead to
an accident resulting in death or
serious injury.
■Parking brake switch
Do not set any objects near the
parking brake switch. Objects
may interfere with the switch and
may lead the parking brake to
unexpectedly operate.
■Parking brake automatic lock
function
Never use the automatic parking
brake engagement function in
place of normal parking brake
operation. This function is
designed to reduce the risk of a
collision due to the driver forget-
ting to engage the parking brake.
Over-reliance on this function to
park the vehicle safely may lead
to an accident resulting in death
or serious injury.

2665-2. Driving procedures
Turn the brake hold system on
The brake hold standby indicator
(green) comes on. While the
system is holding the brake, the
brake hold operated indicator (yel-
low) comes on.
■Brake hold system operating
conditions
The brake hold system cannot be
turned on in the following condi-
tions:
●The driver’s door is not closed.
●The driver is not wearing the seat
belt.
NOTICE
■When parking the vehicle
Before you leave the vehicle, shift
the shift position to P, set the
parking brake and make sure that
the vehicle does not move.
■When the system malfunc-
tions
Stop the vehicle in a safe place
and check the warning messages.
■When the vehicle 12-volt bat-
tery is discharged
The parking brake system cannot
be activated. ( P.589)
■When the parking brake can-
not be released due to a mal-
function
Driving the vehicle with the park-
ing brake set will lead to brake
components overheating, which
may affect braking performance
and increase brake wear. Have
the vehicle inspected by your
Toyota dealer immediately if this
occurs.
Brake Hold
The brake hold system
keeps the brake applied
when the shift position is in
D or N with the system on
and the brake pedal has
been depressed to stop the
vehicle. The system
releases the brake when the
accelerator pedal is
depressed with the shift
position in D to allow
smooth start off.
Enabling the system
A
B

2675-2. Driving procedures
5
Driving
●“Parking Brake Unavailable” or
“Parking Brake Malfunction Visit
Your Dealer” is displayed on the
multi-information display.
If any of the conditions above are
detected when the brake hold sys-
tem is enabled, the system will turn
off and the brake hold standby indi-
cator light will go off. In addition, if
any of the conditions are detected
while the system is holding the
brake, a warning buzzer will sound
and a message will be shown on the
multi-information display. The park-
ing brake will then be set automati-
cally.
■Brake hold function
●If the brake pedal is left released
for a period of about 3 minutes
after the system has started hold-
ing the brake, the parking brake
will be set automatically. In this
case, a warning buzzer sounds
and a message is shown on the
multi-informat ion display.
●To turn the system off while the
system is holding the brake, firmly
depress the brake pedal and
press the button again.
●The brake hold function may not
hold the vehicle when the vehicle
is on a steep incline. In this situa-
tion, it may be necessary for the
driver to apply the brakes. A warn-
ing buzzer will sound and the
multi-informatio n display will
inform the driver of this situation. If
a warning message is shown on
the multi-information display, read
the message and follow the
instructions.
●When do not wish for the parking
brake to operate automatically,
press and hold the brake hold
switch until the standby indicator
(green) turns off, and then turn the
power switch off.
■When the parking brake is set
automatically while the system
is holding the brakes
Perform any of the following opera- tions to release the parking brake.
●Depress the accelerator pedal.
(The parking brake will not be
released automatically if the seat
belt is not fastened.)
●Operate the parking brake switch
with the brake pedal depressed.
Make sure that the parking brake
indicator light goes off. ( P.263)
■When an inspection at your
Toyota dealer is necessary
When the brake hold standby indi-
cator (green) does not illuminate
even when the brake hold switch is
pressed with the brake hold system
operating conditions met, the sys-
tem may be malfunctioning. Have
the vehicle inspected at your Toyota
dealer.
■If “Brake Hold Malfunction
Press Brake to Deactivate Visit
Your Dealer” or “Brake Hold
Malfunction Visit Your Dealer”
is displayed on the multi-infor-
mation display
The system may be malfunctioning.
Have the vehicle inspected by your
Toyota dealer.
■Warning messages and buzzers
Warning messages and buzzers are
used to indicate a system malfunc-
tion or to inform the driver of the
need for caution. If a warning mes-
sage is shown on the multi-informa-
tion display, read the message and
follow the instructions.
■If the brake hold operated indi-
cator flashes
 P.561

2685-2. Driving procedures
WARNING
■When the vehicle is on a
steep incline
Take care when using the brake
hold system on a steep incline,
exercise caution. The brake hold
function may not hold brakes in
such situations.
Also, the system may not activate
depending on the angle of the
slope.
■When stopped on a slippery
road
The system cannot stop the vehi-
cle when the gripping ability of the
tires has been exceeded. Do not
use the system when stopped on
a slippery road.
NOTICE
■When parking the vehicle
The brake hold system is not
designed for use when parking
the vehicle for a long period of
time. Turning the power switch off
while the system is holding the
brake may release the brake,
which would cause the vehicle to
move. When operating the power
switch, depress the brake pedal,
shift the shift position to P and set
the parking brake.

2695-3. Operating the lights and wipers
5
Driving
5-3.Operating the lights and wipers
Operating the switch
turns on the lights as follows:
U.S.A. (type A)
1 The daytime running
lights turn on. ( P.270)
2 The side marker, park-
ing, tail, license plate, instru-
ment panel lights, and
daytime running lights
( P.270) turn on.
3 The headlights and all
lights listed above (except
daytime running lights) turn
on.
4 Off
U.S.A. (type B)
1 The headlights, side
marker, parking, LED acces-
sories lamp (if equipped),
daytime running lights
( P.270) and so on turn on
and off automatically.
2 The side marker, park-
ing, LED accessories lamp (if
equipped), tail, license plate,
instrument panel lights, and
daytime running lights
( P.270) turn on.
3 The headlights and all
lights listed above (except
daytime running lights) turn
on.
4 The daytime running
lights turn off.Headlight switch
The headlights can be oper-
ated manually or automati-
cally.
Turning on th e headlights

2705-3. Operating the lights and wipers
Canada
1 The headlights, side
marker, parking, LED acces-
sories lamp (if equipped),
daytime running lights
( P.270) and so on turn on
and off automatically.
2 The side marker, park-
ing, LED accessories lamp (if
equipped), tail, license plate,
instrument panel lights, and
daytime running lights
( P.270) turn on.
3 The headlights and all
lights listed above (except
daytime running lights) turn
on.
■AUTO mode can be used when
The power switch is in ON.
■Daytime running light system
●Vehicles without LED accessories
lamp: The daytime running lights
illuminate using the same lights as
the low beam head lights, and illu-
minate dimmer than the low beam
headlights.
●Vehicles with LED accessories
lamp: The daytime running lights
illuminate using the same lights as
the parking lights, and illuminate
brighter than the parking lights.
●To make your vehicle more visible
to other drivers during daytime
driving, the daytime running lights
turn on automatically when all of
the following conditions are met.
(The daytime running lights are
not designed for use at night.)
• The hybrid system is operating
• The parking brake is released
• The headlight switch is in the ,
or
* position
*: When the surroundings are bright
The daytime running lights remain
on after they illuminate, even if the
parking brake is set again.
●For the U.S.A.: Daytime running
lights can be turned off by operat-
ing the switch.
●Compared to turning on the head-
lights, the daytime running light
system offers gr eater durability
and consumes less electricity, so
it can help improve fuel economy.
■Headlight control sensor (if
equipped)
The sensor may not function prop-
erly if an object is placed on the sen-
sor, or anything that blocks the
sensor is affixed to the windshield.
Doing so interferes with the sensor
detecting the level of ambient light
and may cause the automatic head-
light system to malfunction.

2715-3. Operating the lights and wipers
5
Driving
■Automatic light off system
●When the headlights are on: The
lights turn off 30 seconds after the
power switch is turned to OFF and
a door is opened and closed. (The
lights turn off immediately if
on the key is pressed after all the
doors are closed.)
●When only the tail lights are on:
The tail lights turn off automati-
cally if the power switch is turned
to OFF and the driver’s door is
opened.
To turn the lights on again, turn the
power switch to ON, or turn the light
switch to the , or posi-
tion once and then back to the
or position.
■Light reminder buzzer
A buzzer sounds when the driver’s
door is opened while the lights are
turned on with the power switch in
OFF (except when the automatic
light off system is operated).
■12-volt battery-saving function
In order to prevent the 12-volt bat-
tery of the vehicle from discharging,
if the headlights and/or tail lights are
on when the power switch is turned
to OFF, the battery saving function
will operate and aut omatically turn
off all the lights after approximately
20 minutes.
When any of the following are per-
formed, the 12-volt battery-saving
function is canceled once and then
reactivated. All the lights will turn off
automatically 20 minutes after the
12-volt battery-saving function has
been reactivated:
●When the headlight switch is oper-
ated
●When a door is opened or closed
■Windshield wiper linked head-
light illumination (if equipped)
When driving during daytime with
the headlight switch is in the
position, if the windshield wipers are
used, the headlights will turn on
automatically after several seconds
to help enhance the visibility of your
vehicle.
■If “Headlight System Malfunc-
tion Visit Your Dealer” is dis-
played on the mu lti-information
display
The system may be malfunctioning.
Have the vehicle inspected by your
Toyota dealer.
■Customization
Settings (e.g. light sensor sensitiv-
ity) can be changed.
(Customizable features: P.618)
1 With the headlights on, push
the lever away from you to
turn on the high beams.
NOTICE
■To prevent 12-volt battery dis-
charge
Do not leave the lights on longer
than necessary when the hybrid
system is not operating.
Turning on the high beam
headlights

2725-3. Operating the lights and wipers
Pull the lever toward you to the
center position to turn the high
beams off.
2Pull the lever toward you and
release it to flash the high
beams once.
You can flash the high beams with
the headlights on or off.
1Press the Automatic High
Beam switch.
AHB (Automatic High
Beam)
The Automatic High Beam
uses a front camera located
on the upper portion of the
windshield to detect the
brightness of the lights of
vehicles ahead, street-
lights, etc., and automati-
cally changes the head
lights between the high
beams and low beams.
WARNING
■For safe use
Do not overly rely on the Auto-
matic High Beam. Always drive
safely, taking care to observe
your surroundings and turning the
high beams on or off manually if
necessary.
■To prevent unintentional
operation of the Automatic
High Beam system
●When it is necessary to disable
the system: P.284
Using the Automatic High
Beam system