gradually TOYOTA PRIUS PRIME 2023 Owners Manual

2395-1. Before driving
5
Driving
5-1.Before driving
■Starting the hybrid system
 P.251
■Driving
1 With the brake pedal
depressed, shift the shift
position to D.
Check that the shift position indica-
tor shows D.
2If the parking brake is set,
release the parking brake.
( P.263)
If the parking brake is in automatic
mode, the parking brake will be
released automatically. ( P.264)
3 Gradually release the brake
pedal and gently depress the
accelerator pedal to acceler-
ate the vehicle.
■Stopping
1 Depress the brake pedal.
2 If necessary, set the parking
brake.
If the vehicle is to be stopped for an
extended period of time, shift the
shift position to P. ( P.257)
■Parking the vehicle
1 Depress the brake pedal to
stop the vehicle completely. 2
If the parking brake is
released, set the parking
brake. ( P.263)
3 Shift the shift position to P.
( P.257)
Check that the shift position indica-
tor shows P and the parking brake
indicator is illuminated.
4Press the power switch to
stop the hybrid system.
5 Slowly release the brake
pedal.
6 Lock the door, making sure
that you have the electronic
key on your person.
If parking on a hill, block the wheels
as needed.
■Starting off on a steep
uphill
1 Firmly depress the brake
pedal and shift the shift posi-
tion to D.
The hill-start assi st control will be
activated.
2 Set the parking brake.
( P.263)
3 Release the brake pedal and
gently depress the accelera-
tor pedal to accelerate the
vehicle.
4 Release the parking brake.
( P.263)
■For electricity-saving and fuel-
efficient driving
Understand the system characteris-
tics of the vehicl e to use the func-
tions of the hybrid system. Also,
keep in mind that Plug-in Hybrid
Electric Vehicles are similar to con-
Driving the vehicle
The following procedures
should be observed to
ensure safe driving:
Driving procedure

2405-1. Before driving
ventional vehicles, and it is neces-
sary to refrain from activities such
as sudden acceleration. Refer to
“Plug-in Hybrid Electric Vehicle driv-
ing tips”. ( P.88)
■Driving in the rain
●Drive carefully when it is raining,
because visibility will be reduced,
the windows may become fogged-
up, and the road will be slippery.
●Drive carefully when it starts to
rain, because the road surface will
be especially slippery.
●Refrain from high speeds when
driving on an expressway in the
rain, because there may be a
layer of water between the tires
and the road surface, preventing
the steering and brakes from
operating properly.
■ECO Accelerator Guidance
( P.163)
It is easier to driv e in an Eco-friendly
manner by driving while referring to
the ECO Accelerator Guidance dis-
play. Also, by using the ECO Accel-
erator Guidance it is easier to
increase the “Eco Score” evaluation.
●When starting off:
While staying within the ECO Accel-
erator Guidance range, gradually
depress the accelerator pedal and
accelerate to the desired speed. If
excessive acceleration is avoided,
the “Start” score will increase.
●When driving:
After accelerating to the desired
speed, release the accelerator
pedal and drive at a stable speed
within the ECO Accelerator Guid-
ance range. By keeping the vehicle
within the ECO Accelerator Guid-
ance range, the “C ruise” score will
increase.
●When stopping:
When stopping the vehicle, early releasing the accelerator pedal will
cause the “Stop” sco
re to increase.
■Restraining the hybrid system
output (Brake Override System)
●When the accelerator and brake
pedals are depressed at the same
time, the hybrid system output
may be restrained.
●A warning message is displayed
on the multi-information display
while the system is operating.
■Breaking in your new Toyota
To extend the life of the vehicle,
observing the following precautions
is recommended:
●For the first 200 miles (300 km):
Avoid sudden stops.
●For the first 600 miles (1000 km):
• Do not drive at extremely high speeds.
• Avoid sudden acceleration.
• Do not drive continuously in low gears.
• Do not drive at a constant speed for extended periods.
■Operating your vehicle in a for-
eign country
Comply with the relevant vehicle
registration laws and confirm the
availability of th e correct fuel.
(  P.601)
WARNING
Observe the following precau-
tions.
Failure to do so may result in
death or serious injury.
■When starting the vehicle
Always keep your foot on the
brake pedal while stopped with
the “READY” indi cator is illumi-
nated. This prevents the vehicle
from creeping.

3395-5. Using the driving support systems
5
Driving
■Situations in which the curve
speed reduction function may
not operate
In situations such as the following,
the curve speed reduction function
may not operate:
●When the vehicle is being driven
around a gentle curve
●When the accelerator pedal is
being depressed
●When the vehicle is being driven
around an extremely short curve
While a warning of the driver
monitor is being displayed, the
vehicle acceleration will be
restrained.
When the warning of the driver
monitor disappears, the restrained
acceleration control will end.
If your vehicle is being driven at
approximately 50 mph (80 km/h)
or more and a lane change to
the passing lane is performed,
when the turn signal lever is
operated and the lane is
changed, the vehicle will accel- erate up to the set speed to
assist in overtaking.
The system’s recognition of
which lane is the passing lane
may be based solely on the
location of the steering wheel in
the vehicle (left-hand drive/right-
hand drive). If the vehicle is
driven in a location where the
passing lane is on the opposite
side of that where the vehicle
was originally sold, the vehicle
may accelerate when the turn
signal lever is operated away
from the passing lane. (e.g. The
vehicle was manufactured for a
right-hand traffic location, but is
being driven in a left-hand traffic
location. The vehicle may accel-
erate when the turn signal lever
is operated to the right.)
If your vehicle is being driven at
approximately 50 mph (80 km/h)
or more and the lane is changed
to that with a vehicle traveling
slower than your vehicle, when
the turn signal lever is operated
the vehicle will
gradually decel-
erate to assist in changing
lanes.
The settings of Dynamic radar
cruise control can be changed
through customize settings.
( P.628)
Driver Monitor support
function (if equipped)
Support for lane changeChanging Dynamic radar
cruise control settings

5808-2. Steps to take in an emergency
14Inflate the tire until the speci-
fied air pressure is reached.
The sealant will be injected
and the pressure will spike to
between 44 psi (300 kPa, 3.0
kgf/cm
2 or bar) and 58 psi
(400 kPa, 4.0 kgf/cm
2 or bar),
then gradually decrease.
The air pressure gauge will
be displayed the actual tire
inflation pressure about 1 to
5 minutes after the switch is
turned on.
Turn the compressor switch off and
then check the tire inflation pres-
sure. Being careful not to over
inflate, check and repeat the infla-
tion procedure until the specified
tire inflation pressure is reached.
The tire can be inflated for about 5
to 20 minutes (depending on the
outside temperature). If the tire
inflation pressure is still lower than the specified point after inflation for
25 minutes, the tire is too damaged
to be repaired. Turn the compres-
sor switch off and contact your
Toyota dealer.
If the tire inflation pressure exceeds
the specified air pressure, let out
some air to adjust the tire inflation
pressure. (
P.582, 605)
15With the compressor switch
off, disconnect the hose from
the valve on the tire and then
pull out the power plug from
the power outlet socket.
Some sealant may leak when the
hose is removed.
16Install the valve cap onto the valve of the emergency
repaired tire.
17Attach the air release cap to the end of the hose.
If the air release cap is not
attached, the sealant may leak and
the vehicle may get dirty.
18Temporarily store the bottle in the luggage compartment
while it is connected to the
compressor.
19To spread the liquid sealant evenly within the tire, imme-
diately drive safely for about
A
B

5918-2. Steps to take in an emergency
8
When trouble arises
cal components when the vehicle
is running at a low speed for an
extended period, such as in heavy
traffic.
■When the 12-volt battery is
removed or discharged
●Information stored in the ECU is
cleared. When the 12-volt battery
is depleted, have the vehicle
inspected at your Toyota dealer.
●Some systems may require initial-
ization. ( P.634)
■When removing the 12-volt bat-
tery terminals
When the 12-volt battery terminals
are removed, the information stored
in the ECU is cl eared. Before
removing the 12-volt battery termi-
nals, contact your Toyota dealer.
■Charging the 12-volt battery
The electricity stored in the 12-volt
battery will discharge gradually even
when the vehicle is not in use, due
to natural discharge and the drain-
ing effects of certain electrical appli-
ances. If the vehicle is left for a long
time, the 12-volt battery may dis-
charge, and the hybrid system may
be unable to start. (The 12-volt bat-
tery recharges automatically while
the hybrid system is operating.)
■When recharging or replacing
the 12-volt battery
●In some cases, it may not be pos-
sible to unlock the doors using the
smart key system when the 12-
volt battery is discharged. Use the
wireless remote control or the
mechanical key to lock or unlock
the doors.
●The hybrid system may not start
on the first attemp t after reinstall-
ing the 12-volt battery. In that
case, start the hybrid system in
the same manner as when the
electronic key does not operate
properly ( P.588). This is not a
malfunction, as the hybrid system
will start normally on the second
attempt.
●The power switch mode is memo-
rized by the vehicle. When the 12-
volt battery is reconnected, the
system will return to the mode it
was in before the 12-volt battery
was discharged. Before discon-
necting the 12-volt battery, turn
the power switch off.
If you are unsure what mode the
power switch was in before the
12-volt battery discharged, be
especially careful when recon-
necting the 12-volt battery.
●If the 12-volt battery discharges, it
may not be possible to shift the
shift position to other positions.
In this case, the vehicle can not be
towed without lifting both front
wheels because the front wheels
will be locked.
●Some systems may require initial-
ization. ( P.634)
■When replacing the 12-volt bat-
tery
●Use a 12-volt battery that con-
forms to Europ ean regulations.
●Use a battery that the case size is
same as the previous one (LN1),
20 hour rate capacity (20HR) is
equivalent (45Ah) or greater, and
performance rating (CCA) is
equivalent (285A) or greater.
• If the sizes differ, the 12-volt bat-
tery cannot be properly secured.
• If the 20 hour rate capacity is low, even if the time period where the
vehicle is not used is a short time,
the 12-volt battery may discharge
and hybrid system may not be
able to start.
●Use a ventilation type calcium bat-
tery
●Use a 12-volt battery with a han-
dle. If a 12-volt battery without a
handle is used, removal is more
difficult.
●When removing the 12-volt bat-
tery: P.512
●After replacing, firmly attach the
following items to the exhaust hole