2021 TOYOTA PRIUS PRIME Owners Manual (in English)

PRIUS PRIME_QG_OM47D86U_(U)
333. Basic operation
3
Basic operation
Wiper intervals can be adjusted when intermittent operation is
selected.
Increases the intermittent
windshield wiper frequency
Decreases the intermittent
windshield wiper frequency
Washer/wiper dual
operation
Pulling the lever operates the
wipers and washer.
The wipers will automatically
operate a couple of times after
the washer squirts.
6
7
8

34
PRIUS PRIME_QG_OM47D86U_(U)
3. Basic operation
■Rain-sensing windshield wipers (if equipped)
Ty p e A
Off
Rain-sensing opera-
tion
Low speed operation
High speed operation
Temporary operation
Ty p e BOff
Rain-sensing operation
Low speed operation
High speed operation
Temporary operation
When is selected, the wipers will operate automatically when t he
sensor detects falling rain. The system automatically adjusts w iper tim-
ing in accordance with rain volume and vehicle speed.
1
2
3
4
5
1
2
3
4
5

PRIUS PRIME_QG_OM47D86U_(U)
353. Basic operation
3
Basic operation
The sensor sensitivity can be adjusted when is selected.
Increases the sensitivity
Decreases the sensitivity
Washer/wiper dual
operation
Pulling the lever operates the
wipers and washer.
The wipers will automatically
operate a couple of times after
the washer squirts.
6
7
8

36
PRIUS PRIME_QG_OM47D86U_(U)
3. Basic operation
■Set the vehicle speedPress the “ON-OFF” button
to activate the cruise control.
Radar cruise control indicator
will come on and a message will
be displayed on the multi-infor-
mation display.
Press the button again to deacti-
vate the cruise control.
Accelerate or decelerate, with accelerator pedal operation, to the
desired vehicle speed (at or above approximately 30 mph [50
km/h]) and push the lever down to set the speed.
■Adjusting the set speed
Increases the speed
(Except when the vehicle has
been stopped by system control
in vehicle-to-vehicle distance
control mode)
Decreases the speed
Fine adjustment: Momentarily
move the lever in the desired
direction.
Large adjustment: Hold the lever up or down to change the speed ,
and release when the desired speed is reached.
Dynamic radar cruise control ope ration (vehicle-to-vehicle dis-
tance control mode)
1
2
1
2

PRIUS PRIME_QG_OM47D86U_(U)
373. Basic operation
3
Basic operation
■Canceling and resuming the speed controlPulling the lever toward you
cancels the speed control.
The speed control is also can-
celed when the brake pedal is
depressed.
(When the vehicle has been
stopped by system control,
depressing the brake pedal
does not cancel the setting.)
Pushing the lever up resumes the cruise control and returns
vehicle speed to the set speed.
However, when a vehicle ahead is not detected, cruise control does not
resume when the vehicle speed is approximately 25 mph (40 km/h) or
less.
■ Dynamic radar cruise control wi th full-speed range can be set when
● The shift position is in D.
● Vehicle speed is at or above approximately 30 mph (50 km/h).
However, when a preceding vehicle is detected, the dynamic rada r cruise
control with full-speed range can be set even if the vehicle sp eed is below
approximately 30 mph (50 km/h).
1
2

38
PRIUS PRIME_QG_OM47D86U_(U)
4. Things you must know
Things you must know
■Regenerative braking
In the following situations, kinetic energy is converted to electric energy and
deceleration force can be obtained in conjunction with the rech arging 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 driving with the shift posit ion in D or B.
■ Gasoline engine operation in EV/EV auto mode
Even if there is a sufficient amount of electricity remaining in the hybrid bat-
tery (traction battery) and EV driving range is being displayed on the multi-
information display etc., EV driving (driving using only the electric motor) may
be canceled and both gasoline engine and electric motor are used depending
on the situation (EV driving will be returned to automatically after EV driving
becomes possible again).
EV driving may be canceled automatically in the following circu mstances:
● When vehicle speed is more than approximately 84 mph (135 km/h) .
● When power is needed temporarily, for example when the accelera tor pedal
is depressed firmly or when accelerating suddenly.
*
● When the temperature of the hybrid system is high.
The vehicle has been left in the sun, driven on a hill, driven at high speeds,
etc.
● When the temperature of the hybrid system is low.
● When the heater is switched on when the outside temperature is below
about 14°F (-10°C).
● When the windshield defogger switch is pressed.
● When the system determines that the gasoline engine needs to be started.
The gasoline engine may also operate in circumstances other tha n those
listed above, depending on conditions.
*: When traveling in the EV auto mode only
■ 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 windshield defogger switch is pressed.
*: Depending on the circumstances, the gasoline engine may also not stop
automatically in situations other than those above.

PRIUS PRIME_QG_OM47D86U_(U)
394. Things you must know
4
Things you must know
WARNING
■While driving
The driver should pay extra attention to pedestrians when the v ehicle 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 system, drive
with care as pedestrians in the vicinity may still not notice the vehicle if the
surrounding area is noisy.
NOTICE
■ Hybrid battery (traction battery) air intake vents
● Make sure not to block the air intake vent with anything, such as a seat
cover, plastic cover, or luggage. If the vents are blocked, the charging/dis-
charging of the hybrid battery (traction battery) may become li mited.
● When dust etc. has accumulated in the air intake vent, clean it with a vac-
uum cleaner to prevent the vent from clogging.
● Do not wet or allow foreign substances to enter the air vents a s this may
cause a short circuit and damage the hybrid battery (traction b attery).
● Do not carry large amounts of water such as water cooler bottle s in the
vehicle. If water spills onto the hybrid battery (traction batt ery), the battery
may be damaged. Have the vehicle inspected by your Toyota deale r.
● A filter is installed to the air intake vent. When the filter r emains noticeably
dirty even after cleaning the air intake vent, filter cleaning or replacement
is recommended. When cleaning the filter, refer to “OWNER’S MAN UAL”.
There are air intake vents on both sides
of the rear seatback for the purpose of
cooling the hybrid battery (traction bat-
tery). If the vents are blocked, charging/
discharging of the hybrid battery (traction
battery) may become limited.

40
PRIUS PRIME_QG_OM47D86U_(U)
4. Things you must know
NOTICE
■Onboard traction battery charger cooling air intake vents
● Do not block the air intake vents with seat covers or luggage
● If the air intake vents are clogged with dust, clean them with a vacuum
cleaner
● Do not allow water or foreign matter to enter the air intake ve nts
● Do not spill large amounts of water near the air intake vents
If water is spilled, have the vehicle inspected by your Toyota dealer and do
not charge the hybrid battery (traction battery) before the ins pection.
■ Notice about fuel
● For plug-in hybrid vehicles, fuel may remain in the tank for a long time and
undergo changes in quality depending on the how the vehicle is used.
Refuel at least 5.3 gal.(20 L, 4.4 Imp.gal.) of fuel every 12 m onths (refuel a
total of at least 5.3 gal. [20 L, 4.4 Imp.gal.] over a 12-month period), as this
may affect components of the fuel system or the gasoline engine .
● If the vehicle has not been refueled for a certain amount of ti me and it is
possible that the quality of the fuel remaining in the tank has changed, “No
new fuel has been added recently. Please refuel” is displayed on the multi-
information display when the power switch is turned to ON mode. If the
message is displayed, refuel the vehicle immediately.
The grilles under the rear seats are the
cooling air intake vents for the onboard
traction battery charger installed under
the seats.
Make sure to observe the following pre-
cautions regarding the cooling air intake
vents. Failure to observe these precau-
tions may result in a charging system
malfunction.