2021 TOYOTA PRIUS flat tire

PRIUS_OM_OM47E09U_(U)
4294-6. Driving tips
4
Driving
◆Checking tire inflation pressure
Make sure to check the tire inflation pressure frequently. Improper
tire inflation pressure can cause poor fuel economy.
Also, as snow tires can cause large amounts of friction, their use on
dry roads can lead to poor fuel economy. Use tires that are app ro-
priate for the season.
◆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
when cold, warming up the engine is unnecessary. Moreover, fre-
quently driving short distances will cause the engine to repeat edly
warm up, which can lead to excess fuel consumption.

472
PRIUS_OM_OM47E09U_(U)
5-3. Using the storage features
■Stowing the luggage cover (except vehicles with full-size spare
tire)
Open the deck board and
secure it with the grocery bag
hooks.
Store cover in the deck under
box.
Close the deck board.
1
2
WARNING
●Do not place anything on the luggage cover. In the event of sudden brak-
ing or turning, the item may go flying and strike an occupant. This could
lead to an unexpected accident, resulting in death or serious i njury.
● Do not allow children to climb on the luggage cover. Climbing o n the lug-
gage cover could result in damage to the luggage cover, possibl y causing
death or serious injury to the child.
● Make sure that the rear edge of the cover is laying flat. If th e cover is
installed with the rear edge raised, the view from the rear win dow may be
obstructed, which could cause an accident.
● Make sure that seat belts are not caught up in the luggage cover. If a seat
belt is caught up in the cover, it may not be able to restrain passengers
properly.
3

495
PRIUS_OM_OM47E09U_(U)
6Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 496
Cleaning and protecting the vehicle interior ........... 502
6-2. Maintenance Maintenance requirements ................... 505
General maintenance........ 508
Emission inspection and maintenance (I/M)
programs......................... 511
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 512
Hood ................................. 515
Positioning a floor jack ...... 517
Engine compartment ......... 518
Tires .................................. 532
Tire inflation pressure ....... 542
Wheels .............................. 545
Air conditioning filter.......... 548
Cleaning the hybrid battery (traction battery) air intake
vent and filter .................. 551
Wiper insert replacement .................... 556
Electronic key battery........ 560
Checking and replacing fuses ............................... 563
Headlight aim .................... 566
Light bulbs......................... 568

510
PRIUS_OM_OM47E09U_(U)
6-2. Maintenance
Vehicle exterior
ItemsCheck points
Doors• Do the doors operate smoothly?
Engine hood• Does the engine hood lock system work prop-erly?
Fluid leaks• There should not be any signs of fluid leakageafter the vehicle has been parked.
Tires
• Is the tire inflati on pressure correct?
• The tires should not be damaged or exces- sively worn.
• Have the tires been rotated according to the
maintenance schedule?
• The wheel nuts should not be loose.
Windshield wipers/
rear window wiper
(if equipped)
• The wiper blades should not show any signs
of cracking, splitting, wear, contamination or
deformation.
• The wiper blades should clear the windshield/
rear window without streaking or skipping.
WARNING
■If the hybrid system is operating
Turn the hybrid system off and ensure that there is adequate ve ntilation
before performing maintenance checks.

PRIUS_OM_OM47E09U_(U)
5136-3. Do-it-yourself maintenance
6
Maintenance and care
Tire inflation
pressure
( P. 542)• Tire pressure gauge
• Compressed air source
Washer fluid
( P. 5 3 0 )• Water or washer fluid containing antifreeze (for win-
ter use)
• Funnel (used only for adding water or washer fluid)
WARNING
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions.
■When working on the engine compartment
● Make sure that the “Accessory”, “Ignition ON” or mileage displa y
( P. 116) on the main display and the “READY” indicator are both off.
● Keep hands, clothing and tools away from the moving fan.
● Be careful not to touch the engine, power control unit, radiator, exhaust
manifold, etc. right after driving as they may be hot. Oil and other fluids
may also be hot.
● Do not leave anything that may burn easily, such as paper and r ags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes
are flammable.
● Be extremely cautious when working on the 12-volt battery. It c ontains poi-
sonous and corrosive sulfuric acid.
■ When working near the electric cooling fans or radiator grille
Be sure the power switch is off.
With the power switch in ON mode, the electric cooling fans may automati-
cally start to run if the air conditioning is on and/or the coolant temperature
is high. ( P. 524)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.
ItemsParts and tools

534
PRIUS_OM_OM47E09U_(U)
6-3. Do-it-yourself maintenance
Your vehicle is equipped with a tire pressure warning system that uses
tire pressure warning valves and transmitters to detect low tire infla-
tion pressure before serious problems arise.
If the tire pressure drops below a predetermined level, the dri ver is
warned by a warning light. ( P. 595)
The compact spare tire is not equipped with a tire pressure warning
valve and transmitter.
◆Installing tire pressure warn ing valves and transmitters
When replacing tires or wheels, tire pressure warning valves an d
transmitters must also be installed.
When new tire pressure warning valves and transmitters are
installed, new ID codes must be registered in the tire pressure
warning computer and the tire pressure warning system must be
initialized. Have tire pressure warning valve and transmitter I D
codes registered by your Toyota dealer. ( P. 535)
◆Initializing the tire pressure warning system
■The tire pressure warning system must be initialized when the
tire inflation pressu re is changed such a s when changing trav-
elling speed or load weight.
When the tire pressure warning sy stem is initialized, the current tire
inflation pressure is set as the benchmark pressure.
Tire pressure warning system

PRIUS_OM_OM47E09U_(U)
5356-3. Do-it-yourself maintenance
6
Maintenance and care
■How to initialize the tire pressure warning systemPark the vehicle in a s afe place and turn the power switch off.
Initialization cannot be perfo rmed while the vehicle is moving.
Adjust the tire inflation pressure to the specified cold tire i nflation
pressure level. ( P. 672)
Make sure to adjust the tire pre ssure to the specified cold tire infla-
tion pressure level. The tire pressure warning system will oper ate
based on this pr essure level.
Turn the power switch to ON mode.
Switch the multi-informatio n display to the screen.
(  P. 151)
Press or of the meter control switches, select
(“Vehicle Settings”), and then press .
Press or of the meter contro l switches, select “Mainte-
nance System”, a nd then press .
Press or of the meter cont rol switches, select “TPMS”,
and then press .
Press and hold .
When initialization com-
pletes, a message is dis-
played on the multi-
information display and the
tire pressure warning light
illuminates.
◆Registering ID codes
The tire pressure warning valve and transmitter is equipped wit h a
unique ID code. When replacing a tire pressure warning valve an d
transmitter, it is necessary to register the ID code. Have the ID code
registered by your Toyota dealer.
1
2
3
4
5
6
7
8
Until Complete
9

536
PRIUS_OM_OM47E09U_(U)
6-3. Do-it-yourself maintenance
■When to replace your vehicle’s tires
Tires should be replaced if:
●The treadwear indicators are showing on a tire.
●You have tire damage such as cuts, splits, cracks deep enough t o
expose the fabric, and bulges indicating internal damage.
●A tire goes flat repeatedly or c annot be properly repaired due to the size
or location of a cut or other damage.
If you are not sure, consult with your Toyota dealer.
■Replacing tires and wheels
If the ID code of the tire press ure warning valve and transmitt er is not reg-
istered, the tire pressure warni ng system will not work properly. A f t e r d r i v -
ing for about 20 minutes, the tire pressure warning light blink s for 1
minute and stays on to indi cate a system malfunction.
■Tire life
Any tire over 6 years old must be checked by a qualified techni cian even
if it has seldom or never been u sed or damage is not obvious.
■Routine tire inflation pressure checks
The tire pressure warning system does not replace routine tire inflation
pressure checks. Make sure to chec k tire inflation pressure as part of
your routine of daily vehicle checks.
■Maximum load of tire
Check that the maximum load of t he replacement tire is greater than 1/2
of the Gross Axle Weight Ratings (GAWR) of either the front axl e or the
rear axle, whichever is greater.
For the GAWR, see the Certification
Label. For the maximum load of the tire,
see the load limit at maximum cold tire
inflation pressure mentioned on the
sidewall of the tire. ( P. 6 7 8 )
BTO62EP049