2020 TOYOTA PRIUS PRIME fuel pressure

612
PRIUS PRIME_OM_OM47C77U_(U)
7-3. Do-it-yourself maintenance
Tire valve
Tire pressure gauge
Remove the tire valve cap.
Press the tip of the tire pressure gauge onto the tire valve.
Read the pressure using the gauge gradations.
If the tire inflation pressure is not at the recommended level, adjust
the pressure.
If you add too much air, press the center of the valve to defla te.
After completing the tire inflation pressure measurement and
adjustment, apply soapy water to the valve and check for leakage.
Put the tire valve cap back on.
■Tire inflation pressure check interval
You should check tire inflation p ressure every two weeks, or at least once
a month.
Do not forget to check the spare.
■Effects of incorrect tire inflation pressure
Driving with incorrec t tire inflation pressure may result in th e following:
●Reduced fuel economy
●Reduced driving comfort and poor handling
●Reduced tire life due to wear
●Reduced safety
●Damage to the drive train
If a tire needs frequent inflating , have it checked by your Toyota dealer.
Inspection and adjustment procedure
1
2
1
2
3
4
5
6

6688-2. Steps to take in an emergency
PRIUS PRIME_OM_OM47C77U_(U)
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front door), side impact sensors (rear), driver’s
seat belt buckle switch, front passenger occupant classificatio n system (ECU
and sensors), “AIR BAG ON” indicator light, “AIR BAG OFF” indic ator light,
front passenger’s seat belt buckle switch, seat belt pretension ers, airbags,
interconnecting wiring and power sources. ( P. 36)
■ Front passenger detection sensor, seat belt reminder and warnin g
buzzer
● If luggage is placed on the front passenger seat, the front pas senger detec-
tion sensor may cause the warning light to flash and the warnin g buzzer to
sound even if a passenger is not sitting in the seat.
● If a cushion is placed on the seat, the sensor may not detect a passenger,
and the warning light may not operate properly.
■ Electric power steering system wa rning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the vol tage tempo-
rarily drops, the electric power steering system warning light may come on
and the warning buzzer may sound.
■ If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
● Is the fuel tank cap loose?
If it is, tighten it securely.
The malfunction indicator lamp will go off after several drivin g trips.
If the malfunction indicator lamp does not go off even after several trips, con-
tact your Toyota dealer as soon as possible.
■
When the tire pressure warning light comes on
Inspect the appearance of the ti re to check that the tire is not punctured.
If the tire is punctured: P. 680
If the tire is not punctured:
Check the tire inflation pressure and adjust to the appropriate level. Initial-
izing the tire pressure warning system will not turn off the tire pressure
warning light.
■The tire pressure warning light may come on due to natural caus es
The tire pressure warning light may come on due to natural caus es such
as natural air leaks and tire inflation pressure changes caused by tem-
perature. In this case, adjusting the tire inflation pressure w ill turn off the
warning light (afte r a few minutes).
■Conditions that the tire pressure warning system may not functi on
properly
 P. 6 0 7

6708-2. Steps to take in an emergency
PRIUS PRIME_OM_OM47C77U_(U)
WARNING
■Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly
when cold and inflated to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or tire inflation p ressure
label (tire and load information label). (If your vehicle has t ires of a dif-
ferent size than the size indicated on the vehicle placard or t ire inflation
pressure label [tire and load information label], you should de termine
the proper tire inflation p ressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire
pressure monitoring system (TPMS -tire pressure warning system) that
illuminates a low tire pressure telltale (tire pressure warning light) when
one or more of your tires is significantly under-inflated. Acco rdingly,
when the low tire pressure telltale (tire pressure warning ligh t) illumi-
nates, you should stop and check your tires as soon as possible , and
inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency and tire tread lif e, and may
affect the vehicle’s handling and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a sub-
stitute for proper tire maintenance, and it is the driver’s res ponsibility to
maintain correct tire pressure, even if under-inflation has not reached
the level to trigger illumination of the TPMS low tire pressure telltale (tire pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warn-
ing system) malfunction indicato r to indicate when the system is not
operating properly. The TPMS (tire pressure warning system) mal func-
tion indicator is combined with the low tire pressure telltale (tire pressure
warning light). When the system detects a malfunction, the tell tale will
flash for approximately one minute and then remain continuously illumi-
nated. This sequence will continue upon subsequent vehicle star t-ups
as long as the malfunction exists . When the malfunction indicator is illu-
minated, the system may not be able to detect or signal low tir e pres-
sure as intended.
TPMS (tire pressure warning system) malfunctions may occur for a vari-
ety of reasons, including the installation of replacement or alternate tires
or wheels on the vehicle that prevent the TPMS (tire pressure w arning
system) from functioning properly. Always check the TPMS (tire pres-
sure warning system) malfunction telltale after replacing one or more
tires or wheels on your vehicle to ensure that the replacement or alter-
nate tires and wheels allow the TPMS (tire pressure warning system) to
continue to function properly.

6958-2. Steps to take in an emergency
PRIUS PRIME_OM_OM47C77U_(U)
8
When trouble arises
WARNING
■Driving to spread the liquid sealant evenly
Observe the following precautions to reduce the risk of accidents.
Failing to do so may result in a loss of vehicle control and ca use death
or serious injury.
●Drive the vehicle carefully at a low speed. Be especially careful when
turning and cornering.
●If the vehicle does not drive straight or you feel a pull throu gh the
steering wheel, stop the vehicle and check the following.
• Tire condition. The tire may have separated from the wheel.
• Tire inflation pressure. If the tire inflation pressure is 19 p si
(130 kPa, 1.3 kgf/cm
2 or bar) or less, the tire may be severely dam-
aged.
NOTICE
■When performing an emergency repair
●A tire should only be repaired with the emergency tire puncture repair
kit if the damage is caused by a sharp object such as nail or screw
passing through the tire tread.
Do not remove the sharp object from the tire. Removing the obje ct may
widen the opening and disenable e mergency repair with the repair kit.
●The repair kit is not waterproof. Make sure that the repair kit is not
exposed to water, such as when it is being used in the rain.
●Do not put the repair kit directly onto dusty ground such as sa nd at the
side of the road. If the repair kit vacuums up dust etc., a mal function
may occur.
■Precautions for the emergency tire puncture repair kit
●The repair kit power source should be 12 V DC suitable for vehi cle
use. Do not connect the repa ir kit to any other source.
●If fuel splatters on the repair kit, the repair kit may deterio rate. Take
care not to allow fuel to contact it.
●Place the repair kit in a storage to prevent it from being exposed to dirt
or water.
●Store the repair kit in the luggage compartment out of reach of chil-
dren.
●Do not disassemble or modify the repair kit. Do not subject par ts such
as the air pressure indicator to impacts. This may cause a malfunction.

PRIUS PRIME_OM_OM47C77U_(U)
7359-1. Specifications
9
Vehicle specifications
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressure
Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressureThe maximum cold inflated pressure to which
a tire may be inflated, shown on the sidewall
of the tire
Recommended
inflation pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of hybrid
transmission, power steering, power brakes,
power windows, power seats, radio and
heater, to the extent that these items are avail-
able as factory-installed equipment (whether
installed or not)
Curb weight
The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded
vehicle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
*
that follows
Occupant distributionDistribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below

787Alphabetical index
PRIUS PRIME_OM_OM47C77U_(U)
SwitchAudio remote control switches
*
Automatic High Beam
switch ................................. 355
Charging timer switch ........... 161
Cruise control switch............. 403
Door lock switches ................ 281
Driving mode select switch ... 419
Emergency flashers switch ... 652
Engine switch........................ 336
EV auto mode switch .............. 90
EV/HV mode selection
switch ................................... 90
Fog light switch ..................... 360
Fuel filler door opener
switch ................................. 370
Garage door opener
switches.............................. 555
Heated steering wheel switch ................................. 527
“HUD” (Head-up display) switch ................................. 253
Ignition switch ....................... 336
Instrument cluster light
control switch...................... 194
LDA (Lane Departure Alert with steering control)
switch ................................. 396
Light switch ........................... 350
Meter control switches .......... 193
Outside rear view mirror switches.............................. 310
P position switch ................... 343
Power door lock switches ..... 281
Power switch......................... 336
Power window switch............ 312
Rear window and outside
rear view mirror
defoggers switch ........ 504, 515
S-APGS switch ..................... 458
Seat heater switches ............ 527 “SOS” button........................... 76
Talk switch
*
Telephone switches*
TRIP switch .......................... 211
Vehicle-to-vehicle distance
switch ................................. 411
VSC OFF switch ................... 490
Window lock switch .............. 312
Windshield wipers and washer switch..................... 362
Wireless charger power
supply switch ...................... 544
Tail lights.................................. 350 Light switch ........................... 350
Replacing light bulbs ............ 648
Talk switch
*
Telephone switch*
Theft deterrent system Immobilizer system .. ............... 83
Tire inflation pressure............. 611 Maintenance data ................. 725
Warning light......................... 665
Tire information ....................... 730 Glossary ............................... 735
Size....................................... 731
Tire Identification Number .... 731
Uniform Tire Quality Grading .............................. 733
Tire pressure warning system.................................... 603 Function ................................ 603
Initializing .............................. 603
Installing tire pressure warning valves and
transmitters ........................ 603
Registering ID codes ............ 604
Warning light......................... 665
T
*: Refer to “NAVIGATION SYSTEM OWNER’S MANUAL” or “MULTIMEDIA OWNER’S MANUAL”.

789Alphabetical index
PRIUS PRIME_OM_OM47C77U_(U)
Vanity lights ............................. 540Wattage ................................ 726
Vanity mirrors .......................... 540
Vehicle data recording .............. 10
Vehicle identification number ................................... 719
Vehicle proximity notification system ...................................... 93
Vehicle Stability Control (VSC) ...................................... 489
Voice command system
*
VSC (Vehicle Stability
Control) .................................. 489
Warning buzzers Approach warning ................. 413
Brake system ....... ................. 662
Intuitive parking assist .......... 436
LDA (Lane Departure Alert with steering control) .......... 393
Open door ..................... 283, 664
Parking Support Brake function ............................... 448
Pre-collision warning............. 381
Radar cruise control.............. 413
RCTA (Rear Cross Traffic Alert) ................................... 421
Seat belt reminder ................ 664
Shift position ......................... 344 Warning lights ......................... 202
ABS ...................................... 663
Brake Override System ........ 666
Brake system ....... ................. 662
Charging system................... 662
Drive-Start Control ................ 666
Driver’s seat belt reminder light..................................... 664
Electronic engine control system .......... ...................... 662
Electric power steering
system .......... ...................... 663
Front passenger’s seat belt reminder light ..................... 664
High coolant temperature ..... 664
Low engine oil pressure........ 662
Low fuel level ........................ 664
Malfunction indicator lamp .... 662
Master warning light ............. 665
Open door............................. 664
Parking Support Brake function............................... 666
PCS ...................................... 663
PKSB OFF indicator ............. 664
Rear passengers’ seat belt
reminder light ..................... 665
Seat belt reminder light......... 664
Slip indicator ......................... 663
SRS ...................................... 663
Tire pressure ........................ 665
V
W
*: Refer to “NAVIGATION SYSTEM OWNER’S MANUAL” or “MULTIMEDIA OWNER’S MANUAL”.

792
PRIUS PRIME_OM_OM47C77U_(U)
GAS STATION INFORMATION
Auxiliary catch leverFuel filler door
P. 585 P. 370
Fuel filler door openerHood lock release
leverTire inflation pressure
P. 370 P. 585P. 725
Fuel tank capacity
(Reference)11.4 gal. (43 L, 9.5 Imp.gal.)
Fuel type
Unleaded gasoline only P. 720
Cold tire inflation
pressure P. 7 2 5
Engine oil capacity
(Drain and refill —
reference)With filter
Without filter
4.4 qt. (4.2 L, 3.7 Imp.qt.)
4.1 qt. (3.9 L, 3.4 Imp.qt.)
Engine oil type “Toyota Genuine Motor Oil” or equivalent
Oil grade: API SN/RC multigrade engine oil
P. 722