
244
PRIUS PRIME_OM_OM47A88U_(U)
3. Instrument cluster
■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 3.1 mph
(5 km/h) 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.
■ Route guidance display
The route guidance is not displayed on both the head-up display and multi-
information display simultaneously. When the route guidance is displayed on
the head-up display, the multi-information display does not display the route
guidance even if the navigation system-linked display ( →P. 225) is selected
on the multi-information display.

PRIUS PRIME_OM_OM47A88U_(U)
2834-2. Opening, closing and locking the doors
4
Operation of each component
●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 6 ft.
(2 m) of the vehicle.
● The smart key system can be deactivated in advance. ( →P. 732)
■ 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 key system do es not operate properly
● Locking and unlocking the doors: Use the mechanical key. ( →P. 690)
● Starting the hybrid system: →P. 691
■ Customization
Settings (e.g. smart key system) can be changed.
(Customizable features: →P. 732)
■ If the smart key system has been deactivated in a customized setting
●Unlocking and locking the doors:
Use the wireless remote control or mechanical key. ( →P. 268, 690)
● Unlocking the charging port lid: →P. 1 1 5
● Unlocking and locking the charging connector: →P. 1 1 9
● Starting the hybrid system and changing power switch modes: →P. 691
● Stopping the hybrid system: →P. 325

PRIUS PRIME_OM_OM47A88U_(U)
3014-5. Opening and closing the windows
4
Operation of each component
■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 th e 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 your Toyota dealer.
1
2
3
4
5
6

306
PRIUS PRIME_OM_OM47A88U_(U)
5-1. Before driving
Driving the vehicle
Check that the charging cable is disconnected. (→P. 132)
→ P. 3 2 4
With the brake pedal depressed, shift the shift position to D.
( → P. 330)
Check that the shift position indicator shows D.
Release the parking brake. ( →P. 337)
Gradually release the brake pedal and gently depress the accelera-
tor pedal to accelerate the vehicle.
With the shift position in D, depress the brake pedal.
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. 331)
The following procedures should be observed to ensure safe
driving:
Before starting the hybrid system
Starting the hybrid system
Driving
Stopping
1
2
3
1
2

PRIUS PRIME_OM_OM47A88U_(U)
3075-1. Before driving
5
Driving
Stop the vehicle completely.
Set the parking brake. (→P. 337)
Shift the shift position to P. ( →P. 331)
Check that the shift position indicator shows P.
Press the power switch to stop the hybrid system.
Slowly release the brake pedal.
Lock the door, making sure that you have the electronic key on your
person.
If parking on a hill, block the wheels as needed.
Firmly set the parking brake with the brake pedal depressed, and
then shift the shift position to D.
Release the brake pedal and gentl y depress the accelerator pedal.
Release the parking brake.
■ When starting off on an uphill
The hill-start assist control will activate. ( →P. 477)
■ For electricity-saving and fuel-efficient driving
Understand the system characteristics of the vehicle to use the functions of
the hybrid system. Also, keep in mind that hybrid vehicles are similar to con-
ventional vehicles, and it is necessary to refrain from activities such as sud-
den acceleration. Refer to “Plug-in hybrid vehicle driving tips” ( →P. 97).
■ Driving in the rain
●Drive carefully when it is raining, because visibility will be reduced, the win-
dows may become fogged-up, and the road will be slippery.
● Drive carefully when it starts to rain, because the road surface will be espe-
cially 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 sur-
face, preventing the steering and brakes from operating properly.
Parking the vehicle
Starting off on a steep uphill
1
2
3
4
5
6
1
2
3

308
PRIUS PRIME_OM_OM47A88U_(U)
5-1. Before driving
■Restraining hybrid system outp ut (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. If a warning message is shown on the multi-information
display, read the message and follow the instructions.
■ “ECO Accelerator Guidance” ( →P. 213)
It is easier to drive in an Eco-friendly manner by driving while referring to the
“ECO Accelerator Guidance” display. Also, by using the “ECO Accelerator
Guidance”, it is easier to increase the Eco score evaluation.
● When starting off:
While staying within the “ECO Accelerator Guidance” range, gradually
depress the accelerator pedal and accelerate to the desired speed. If exces-
sive acceleration is avoided, the “Eco-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 Guidance” range. By
keeping the vehicle within the “ECO Accelerator Guidance” range, the “Eco-
Cruise” score will increase.
● When stopping:
When stopping the vehicle, early releasing the accelerator pedal will cause
the “Eco-Stop” score to increase.
■ Restraining sudden star t (Drive-Start Control)
● When the following unusual operation is performed, the hybrid system out-
put may be restrained.
• When the shift position is shifted from R to D, D/B to R, N to R, P to D, P
to R with the accelerator pedal depressed, a warning message appears
on the multi-information display. If a warning message is shown on the
multi-information display, read the message and follow the instructions.
• When the accelerator pedal is depressed too much while the vehicle is in
reverse.
● While Drive-Start Control is being activated, your vehicle may have trou-
ble escaping from the mud or fresh snow. In such case, deactivate TRAC
(→P. 477) to cancel Drive Start Control so that the vehicle may become
able to escape from the mud or fresh snow.

310
PRIUS PRIME_OM_OM47A88U_(U)
5-1. Before driving
WARNING
Observe the following precautions.
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”
indicator is illuminated. This prevents the vehicle from creeping.
■ When driving the vehicle
● Do not drive if you are unfamiliar with the location of the brake and ac\
cel-
erator pedals to avoid depressing the wrong pedal.
• Accidentally depressing the accelerator pedal instead of the brake
pedal will result in sudden acceleration that may lead to an accident.
• When backing up, you may twist your body around, leading to a diffi- culty in operating the pedals. Make sure to operate the pedals properly.
• Make sure to keep a correct driving posture even when moving the vehicle only slightly. This allows you to depress the brake and accelera-
tor pedals properly.
• Depress the brake pedal using your right foot. Depressing the brake pedal using your left foot may delay response in an emergency, result-
ing in an accident.
● The driver should pay extra attention to pedestrians when the vehicle is
powered only by the electric motor (traction motor). As there is no engine
noise, the pedestrians may misjudge the vehicle’s movement. Even
though the vehicle is equipped with the vehicle proximity notification sys-
tem, drive with care as pedestrians in the vicinity may still not notice the
vehicle if the surrounding area is noisy.
● Do not drive the vehicle over or stop the vehicle near flammable materials.
The exhaust system and exhaust gases can be extremely hot. These hot
parts may cause a fire if there is any flammable material nearby.
● During normal driving, do not turn off the hybrid system. Turning the hybrid
system off while driving will not cause loss of steering or braking control,
however, power assist to the steering will be lost. This will make it more
difficult to steer smoothly, so you should pull over and stop the vehicle as
soon as it is safe to do so.
In the event of an emergency, such as if it becomes impossible to stop the
vehicle in the normal way: →P. 645

314
PRIUS PRIME_OM_OM47A88U_(U)
5-1. Before driving
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When the vehicle is parked
● Do not leave glasses, cigarette lighters, spray cans, or soft drink cans in
the vehicle when it is in the sun.
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may lead to a fire.
• The temperature inside the vehicle may cause the plastic lenses and
plastic material of glasses to deform or crack.
• Soft drink cans may fracture, causing the contents to spray over the
interior of the vehicle, and may also cause a short circuit in the vehicle’s
electrical components.
● Do not leave cigarette lighters in the vehicle. If a cigarette lighter is in a
place such as the glove box or on the floor, it may be lit accidentally when
luggage is loaded or the seat is adjusted, causing a fire.
● Do not attach adhesive discs to the windshield or windows. Do not place con-
tainers such as air fresheners on the instrument panel or dashboard. Adhe-
sive discs or containers may act as lenses, causing a fire in the vehicle.
● Do not leave a door or window open if the curved glass is coated with a
metallized film such as a silver-colored one. Reflected sunlight may cause
the glass to act as a lens, causing a fire.
● Always apply the parking brake, shift the shift position to P, stop the hybrid
system and lock the vehicle.
Do not leave the vehicle unattended while the “READY” indicator is illumi-
nated.
If the vehicle is parked with the shift position in P but the parking brake is
not set, the vehicle may start to move, possibly leading to an accident.
● Do not touch the exhaust pipe while the “READY” indicator is illuminated
or immediately after turning the hybrid system off.
Doing so may cause burns.