tire pressure TOYOTA PRIUS PRIME 2021 Owners Manual (in English)

5
1
9 8
7
6 4 3
2
PRIUS PRIME_OM_OM47D71U_(U)
10
5
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
5
6
7
8
Light bulbs of the exterior lights for driving
(Replacing method: P. 655, Watts: P. 738)
*: If equipped
9
10
11
12
13
14
15
16
17
18

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)
2033. Instrument cluster
3
Instrument cluster
*1: These lights turn on when the power switch is turned to ON mode to indi-
cate that a system check is being performed. They will turn off after the
hybrid system is on, or after a few seconds. There may be a malfunction in
a system if a light does not come on, or turn off. Have the vehicle
inspected by your Toyota dealer.
*2: The light flashes or illuminates to indicate a malfunction.
*3: The light flashes to indicate a malfunction.
*1High coolant temperature warning light P. 676
*1, 3PKSB OFF indicator (if equipped) P. 676
Open door warning light P. 676
Low fuel level warning light P. 676
Driver’s and front passenger’s seat belt
reminder lightP. 677
Rear passengers’ seat belt reminder light
(U.S.A.)P. 677
Rear passengers’ seat belt reminder light
(Canada)P. 677
*1Master warning light P. 677
*1Tire pressure warning lightP. 677
Warning lightsPages

394
PRIUS PRIME_OM_OM47D71U_(U)
5-5. Using the driving support systems
• If the wheels are misaligned
• If a wiper blade is blocking the front camera
• The vehicle is being driven at extremely high speeds
• When driving on a hill
• If the radar sensor or front camera is misaligned
●In some situations such as the following, sufficient braking force may not be
obtained, preventing the system from performing properly:
• If the braking functions cannot operate to their full extent, such as when
the brake parts are extremely cold, extremely hot, or wet
• If the vehicle is not properly maintained (brakes or tires are excessively
worn, improper tire inflation pressure, etc.)
• When the vehicle is being driven on a gravel road or other slippery sur-
face
■If VSC is disabled
●If VSC is disabled (P. 503), the pre-collision brake assist and pre-collision
braking functions are also disabled.
●The PCS warning light will turn on and “VSC Turned Off Pre-Collision Brake
System Unavailable” will be displayed on the multi-information display. • If the front of the vehicle is raised or
lowered

PRIUS PRIME_OM_OM47D71U_(U)
3995-5. Using the driving support systems
5
Driving
WARNING
●The vehicle is driven in an area where the brightness changes suddenly,
such as at the entrances and exits of tunnels, etc.
●Light from the headlights of an oncoming vehicle, the sun, etc. enters the
camera.
●The vehicle is driven on a slope.
●<0037004b0048000300590048004b004c0046004f00480003004c0056000300470055004c00590048005100030052005100030044000300550052004400470003005a004b004c0046004b00030057004c004f005700560003004f0048004900570003005200
5500030055004c004a004b0057000f00030052005500030044[ winding road.
●The vehicle is driven on an unpaved or rough road.
●The traffic lane is excessively narrow or wide.
●The vehicle is extremely tilted due to carrying heavy luggage or having
improper tire pressure.
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030056004b0052005500570011[
●The vehicle is moving up and down a large amount due to road conditions
during driving (poor roads or road seams).
●When driving in a tunnel or at night with the headlights off or when a head-
light is dim due to its lens being dirty or it being misaligned.
●The vehicle is struck by a crosswind.
●The vehicle is affected by wind from a vehicle driven in a nearby lane.
●<0037004b0048000300590048004b004c0046004f00480003004b004400560003004d00580056005700030046004b00440051004a004800470003004f0044005100480056000300520055000300460055005200560056004800470003004400510003004c00
510057004800550056004800460057004c005200510011[
●Tires which differ by structure, manufacturer, brand or tread pattern are
used.
●When tires of a size other than specified are installed.
●Snow tires, etc. are equipped.
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4700560011[

466
PRIUS PRIME_OM_OM47D71U_(U)
5-5. Using the driving support systems
NOTICE
■Preventing sensor malfunctions
●If the area around a sensor is subjected to an impact, equipment may not
operate properly due to a sensor malfunction. Have the vehicle inspected
at your Toyota dealer.
●When using a high-pressure washer to wash the vehicle, do not spray
water directly on the sensors. The sensors may not function properly if
subjected to an impact from strong water pressure.
●When using steam to wash the vehicle, do not direct steam too close to
the sensors. The sensors may not function properly if subjected to steam.
■Preventing unnecessary operation
In the following situations, turn the Parking Support Brake function off. The
system may operate even though there is no possibility of a collision.
●A chassis roller, chassis dynamo, free roller or similar equipment is being
used for an inspection, etc.
●The vehicle is being loaded onto a ship, truck or other transport vessel
●The suspension has been lowered or tires that have a different size than
the genuine tires are equipped
●The height of the vehicle has drastically changed due to the carried load
(the nose tilts up or down).
●A towing eyelet is installed
●When using an automatic car wash

PRIUS PRIME_OM_OM47D71U_(U)
4995-5. Using the driving support systems
5
Driving
WARNING
●Do not use the system in the following situations, as the system may be
unable to correctly assist you in reaching the target parking spot and may
lead to an unexpected accident.
• In an area that is not a parking lot
• A parking lot that is not paved and has no parking space lines, such as
a sand or gravel parking lot
• A parking lot that has a slope or undulations in the road
• A frozen, snow-covered or slippery road
• The asphalt is melting due to hot weather
• There is an obstacle between the vehicle and the target parking spot
• Using tire chains
●Do not use tire other than that provided by the manufacturer. The system
may not operate properly. When replacing tires, contact your Toyota
dealer.
●The system may not be able position the vehicle in the set location in the
following situations.
• The tires are extremely worn or the tire pressure is low
• The vehicle is carrying very heavy load
• The vehicle is tilted due to having luggage, etc. located on one side of
the vehicle
• There are road heaters installed in the parking lot to prevent the road
surface from freezing.
In any other situations when the set position and vehicle position greatly
differ, have the vehicle inspected by your Toyota dealer.
●Make sure to observe the following precautions regarding the exit parallel
parking assist mode.
Exit parallel parking assist mode is a function used when departing from a
parallel parking spot. However, this function may not be usable if obsta-
cles or people are detected in front of the vehicle. Only use this function
when departing from a parallel parking spot. In the event that the steering
control operates, either turn the system off using the S-APGS switch or
operate the steering wheel to stop the control.
●If exit parallel parking assist mode is mistakenly used in the following situ-
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46004f00480011[
The departure function is operated in a direction where an obstacle is
present, but the obstacle is not detected by the side sensors (situations
such as when the vehicle is directly beside a pole).

506
PRIUS PRIME_OM_OM47D71U_(U)
5-5. Using the driving support systems
WARNING
■When the TRAC/VSC systems are turned off
Be especially careful and drive at a speed appropriate to the road condi-
tions. As these are the systems to help ensure vehicle stability and driving
force, do not turn the TRAC/VSC systems off unless necessary.
■Replacing tires
Make sure that all tires are of the specified size, brand, tread pattern and
total load capacity. In addition, make sure that the tires are inflated to the
recommended tire inflation pressure level.
The ABS, TRAC and VSC systems will not function correctly if different tires
are installed on the vehicle.
Contact your Toyota dealer for further information when replacing tires or
wheels.
■Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspension will affect
the driving assist systems, and may cause a system to malfunction.

PRIUS PRIME_OM_OM47D71U_(U)
5095-6. Driving tips
5
Driving
■Tire chain installation
Observe the following precautions when installing and removing chains:
●<002c0051005600570044004f004f0003004400510047000300550048005000520059004800030057004c0055004800030046004b0044004c005100560003004c005100030044000300560044004900480003004f0052004600440057004c00520051001100
03[
●Install tire chains on the front tires only. Do not install tire chains on the rear
tires.
●Install tire chains on front tires as tightly as possible. Retighten chains after
driving 1/4 - 1/2 mile (0.5 - 1.0 km).
●<002c0051005600570044004f004f00030057004c0055004800030046004b0044004c00510056000300490052004f004f0052005a004c0051004a00030057004b00480003004c0051005600570055005800460057004c005200510056000300530055005200
59004c0047004800470003005a004c0057004b00030057004b[e tire chains.
■Consumption of fuel and electricity
In cold temperatures, resistance of the parts of a vehicle (transmission, tires,
etc.) generally increases, resulting in increase of energy consumption. As a
result, fuel economy is likely to decrease.
Consumption of fuel and electricity of this vehicle is also likely to become
worse in cold temperatures.
WARNING
■Driving with snow tires
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in a loss of vehicle control and cause death or
serious injury.
●Use tires of the specified size.
●Maintain the recommended level of air pressure.
●Do not drive in excess of 75 mph (120 km/h), regardless of the type of
snow tires being used.
●Use snow tires on all, not just some wheels.
■Driving with tire chains
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in the vehicle being unable to be driven safely,
and may cause death or serious injury.
●Do not drive in excess of the speed limit specified for the tire chains being
used, or 30 mph (50 km/h), whichever is lower.
●Avoid driving on bumpy road surfaces or over potholes.
●Avoid sudden acceleration, abrupt steering, sudden braking and shifting
operations that cause sudden engine braking.
●Slow down sufficiently before entering a curve to ensure that vehicle con-
trol is maintained.
●Do not use LTA (Lane Tracing Assist).
■When parking the vehicle
When parking the vehicle without applying the parking brake, make sure to
chock the wheels. If you do not chock the wheels, the vehicle may move
unexpectedly, possibly resulting in an accident.