tires TOYOTA PRIUS PRIME 2021 Owners Manual (in English)

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PRIUS PRIME_OM_OM47D71U_(U)
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6-4. Using the other interior
features
Other interior features ....... 553
• Sun visors ..................... 553
• Vanity mirrors................ 553
• Power outlets ................ 554
• USB charging ports....... 555
• Wireless charger ........... 557
• Armrest ......................... 566
• Coat hooks.................... 566
• Assist grips ................... 567
Garage door opener .......... 5687-1. Maintenance and care
Cleaning and protecting
the vehicle exterior .......... 576
Cleaning and protecting
the vehicle interior ........... 581
7-2. Maintenance
Maintenance
requirements ................... 587
General maintenance ........ 590
Emission inspection and
maintenance (I/M)
programs ......................... 593
7-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ...................... 594
Hood .................................. 597
Positioning a floor jack....... 599
Engine compartment ......... 600
Tires................................... 614
Tire inflation pressure ........ 623
Wheels............................... 626
Replacing the tire............... 629
Air conditioning filter .......... 640
Wiper insert
replacement..................... 644
Electronic key battery ........ 647
Checking and replacing
fuses ................................ 650
Headlight aim..................... 653
Light bulbs ......................... 655
7Maintenance and care

17Pictorial index
PRIUS PRIME_OM_OM47D71U_(U)Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 371
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 371
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 732
Charging port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 110
Charging method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 134
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 614
Replacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 629
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . P. 737
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 507
Checking/rotation/tire pressure warning system . . . . . . . . .P. 614
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 692
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 597
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 597
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 734
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 721
Headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 353
Parking lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 353
Fog lights
* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 363
LED accent lights
*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 353
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 351
Daytime running lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 353
Side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 353
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 353
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 353
Back-up lights
Shifting the shift position to R . . . . . . . . . . . . . . . . . . . . . . . . . P. 345
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6
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Light bulbs of the exterior lights for driving
(Replacing method: P. 655, Watts: P. 738)
*: If equipped
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PRIUS PRIME_OM_OM47D71U_(U)
1072-1. Plug-in hybrid system
2
Plug-in hybrid system
◆Air conditioning
●Turn the “A/C” switch (
*1 • *2) off when it is
not needed. Doing so can help reduce excessive electricity and
fuel consumption.
In summer: When the ambient temperature is high, use the recir-
culated air mode. Doing so will help to reduce the burden on the
air conditioning system and reduce electricity and fuel consump-
tion as well.
In winter: Avoid excessive and unnecessary use of the heater.
Usage of the heated steering wheel (if equipped) and seat heat-
ers is effective. (P. 5 3 9 )
●Using the Remote Air Conditioning System (P. 535) while the
charging cable is connected to the vehicle can reduce electricity
consumption immediately after starting off by operating air condi-
tioning mainly using electricity from an external power source.
●When setting the charging schedule, selecting the start time set-
ting mode and setting “Climate Prep” to “On” can reduce electric-
ity consumption immediately after starting off by operating air
conditioning before charging is completed. (P. 157)
*1: Vehicles with 7-inch display
*2: Vehicles with 11.6-inch display
◆Checking tire inflation pressure
Make sure to check the tire inflation pressure frequently. If there is
improper tire inflation pressure in the tires, the EV driving range will
become shorter, and fuel consumption when in HV mode will
increase.
Also, as snow tires can cause large amounts of friction, their use on
dry roads can lead to increased fuel and electricity consumption.
◆Luggage
Carrying heavy luggage will lead to poor fuel economy. Avoid carry-
ing unnecessary luggage. Installing a large roof rack will also cause
poor fuel economy.
◆Warming up before driving
Since the gasoline engine starts up and cuts out automatically,
warming up is not necessary.

PRIUS PRIME_OM_OM47D71U_(U)
1092-1. Plug-in hybrid system
2
Plug-in hybrid system
The distance that can be driven in EV mode varies significantly
depending on how the vehicle is driven, road conditions, the weather,
the outside temperature, usage conditions of electrical components
and the number of occupants.
The distance that can be driven in EV mode can be extended if the fol-
lowing is performed:
●Maintain a safe distance from the vehicle in front and avoid unnec-
essary acceleration and deceleration
●Accelerate and decelerate the vehicle as smoothly as possible
●Drive at moderate speeds as much as possible and maintain a con-
stant speed
●Set the air conditioning to a moderate temperature and turn the “A/C”
switch (
*1 • *2) off when it is not needed
●Use tires of the specified size and maintain the specified tire pres-
sure
●Use the EV/HV mode selection switch to drive in HV mode when
driving on a highway
Electricity consumption will increase substantially when driving on a
highway in EV mode.
●Do not add unnecessary weight to the vehicle
*1: Vehicles with 7-inch display
*2: Vehicles with 11.6-inch display
The following indicate that charging has been carried out properly.
●The charging indicator turns off
●The Hybrid battery (traction battery) status indicators illuminate for
approximately 15 seconds. (P. 112)
●“Charging Complete” is displayed on the multi-information display
when starting off (P. 140)
Regardless of the type of power source or whether the charging
schedule function is used, charging is completed if the above can be
confirmed.
Charging-related messages: P. 185
Tips for extending the EV driving range
Display when charging is completed

PRIUS PRIME_OM_OM47D71U_(U)
2233. Instrument cluster
3
Instrument cluster
◆Energy monitor
The energy monitor can be used to check the vehicle drive status,
hybrid system operation status and energy regeneration status.
While charging from the external power source, the flow of electrical
energy while charging is displayed.
When energy is flowing, an arrow appears and a bright point of light
moves to show the direction of the flow of energy. When energy is
not flowing, the bright point of light is not displayed.
●The arrows from the image of the engine to that of the electric
motor (traction motor) or tires are displayed in red.
●The arrow indicating energy consumption is displayed in yellow,
and the arrow indicating energy regeneration or charging is dis-
played in green. Also, the color around the image of the hybrid
battery (traction battery) is changed.
As an example, all arrows are shown in the illustration, but the actual
contents of the display will differ.
■
Except when charging
Gasoline engine
Electric motor
(traction motor)
Air conditioning system oper-
ation
*1
Hybrid battery
(traction battery)
Tire
Bright point of light showing the flow of energy
(Display example)
●When the hybrid battery (traction battery) is being charged, the
bright point of light moves towards .
●During driving, the bright point of light moves from or (or
both depending on the situation) towards .
*2
●When the air conditioning compressor is operating, a bright point
of light moves from to .
●During driving, the image of the tires rotates.
*1: It is displayed while the air conditioning system is operating.
*2: The display may differ depending on the driving status.
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PRIUS PRIME_OM_OM47D71U_(U)
3. Instrument cluster
■Display the detail screen (P. 2 7 3 )
Display “Energy Monitor” screen.
Select on the upper right screen.
■Function summary
The energy monitor can be used to check the vehicle drive status,
hybrid system operation status and energy regeneration status.
The flow of electric energy during charging is displayed when
charging from an external power source.
For vehicles equipped with a solar charging system, a guide for the
state of the solar charging system is displayed.
■Flow of energy and display details
When energy is flowing, an arrow appears and a bright point of light
moves to show the direction of the flow of energy. When energy is
not flowing, the bright point of light are not displayed.
●The display when the engine is operating is in blue while the
engine is being warmed up and yellow afterwards.
●The arrow from the engine to the motor and tires is displayed in
red.
●The arrow indicating energy consumption is displayed in yellow
and the arrow indicating energy regeneration or charging is dis-
played in green. Also, the hybrid battery (traction battery)
changes color accordingly.
●There are icons , , on the lower side of the
screen. The screen switches to each point of view when you
select it.
●When you select , this screen is displayed in the lower half of
the screen, it will be displayed together with the navigation
screen.
●These images are examples only, and may vary slightly from
actual conditions.
How to read the energy monitor
1
2

PRIUS PRIME_OM_OM47D71U_(U)
3215-1. Before driving
5
Driving
Stop the vehicle completely.
Set the parking brake. (P. 3 5 2 )
Shift the shift position to P. (P. 346)
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 gently depress the accelerator pedal.
Release the parking brake.
■When starting off on an uphill
The hill-start assist control will activate. (P. 502)
■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. 105).
■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
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PRIUS PRIME_OM_OM47D71U_(U)
3255-1. Before driving
5
Driving
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When driving the vehicle
●Use engine braking (shift position B instead of shift position D) to maintain
a safe speed when driving down a steep hill.
Using the brakes continuously may cause the brakes to overheat and lose
effectiveness. (P. 346)
●Do not adjust the positions of the steering wheel, the seat, or the inside or
outside rear view mirrors while driving.
Doing so may result in a loss of vehicle control.
●Always check that all passengers’ arms, head or other parts of their body
are not outside the vehicle.
●Do not drive across river crossings or through other bodies of water.
This may cause electric/electronic components to short circuit, damage
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●Do not drive in excess of the speed limit. Even if the legal speed limit per-
mits it, do not drive over 85 mph (140 km/h) unless your vehicle has high-
speed capability tires. Driving over 85 mph (140 km/h) may result in tire
failure, loss of control and possible injury. Be sure to consult a tire dealer
to determine whether the tires on your vehicle are high-speed capability
tires or not before driving at such speeds.
■When driving on slippery road surfaces
●Sudden braking, acceleration and steering may cause tire slippage and
reduce your ability to control the vehicle.
●Sudden acceleration, engine braking due to shifting, or changes in engine
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●After driving through a puddle, depress the brake pedal to make sure that
the brakes are functioning properly. Wet brake pads may prevent the
brakes from functioning properly. If the brakes on only one side are wet
and not functioning properly, steering control may be affected.

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PRIUS PRIME_OM_OM47D71U_(U)
5-1. Before driving
5
Driving
Vehicle load limits
◆Total load capacity (vehicle capacity weight): P. 730
Total load capacity means the combined weight of occupants, cargo
and luggage.
◆Seating capacity: P. 7 3 0
Seating capacity means the maximum number of occupants whose
estimated average weight is 150 lb. (68 kg) per person.
◆Towing capacity
Toyota does not recommend towing a trailer with your vehicle.
◆Cargo capacity
Cargo capacity may increase or decrease depending on the weight
and the number of occupants.
■Total load capacity and seating capacity
These details are also described on the tire and loading information label.
(P. 623)
Vehicle load limits include total load capacity, seating capacity,
towing capacity and cargo capacity.
WARNING
■Overloading the vehicle
Do not overload the vehicle.
It may not only cause damage to the tires, but also degrade steering
and braking ability, resulting in an accident.

PRIUS PRIME_OM_OM47D71U_(U)
3875-5. Using the driving support systems
5
Driving
WARNING
■When to disable the pre-collision system
In the following situations, disable the system, as it may not operate prop-
erly, possibly leading to an accident resulting in death or serious injury:
●When the vehicle is being towed
●When your vehicle is towing another vehicle
●When transporting the vehicle via truck, boat, train or similar means of
transportation
●When the vehicle is raised on a lift with the hybrid system on and the tires
are allowed to rotate freely
●When inspecting the vehicle using a drum tester such as a chassis dyna-
mometer or speedometer tester, or when using an on vehicle wheel bal-
ancer
●When a strong impact is applied to the front bumper or front grille, due to
an accident or other reasons
●If the vehicle cannot be driven in a stable manner, such as when the vehi-
cle has been in an accident or is malfunctioning
●When the vehicle is driven in a sporty manner or off-road
●When the tires are not properly inflated
●When the tires are very worn
●When tires of a size other than specified are installed
●When tire chains are installed
●When a compact spare tire or an emergency tire puncture repair kit is used
●If equipment (snow plow, etc.) that may obstruct the radar sensor or front
camera is temporarily installed to the vehicle