Toyota Prius (2022 year). Manual in english - page 31

Mainten

WARNING

■

If your vehicle is not properly maintained

Improper maintenance could result in serious damage to the vehicle and
possible serious injury or death.

■

Handling of the 12-volt battery

●

Engine exhaust, some of its constituents, and a wide variety of automobile
components contain or emit chemicals known to the State of California to
cause cancer and birth defects and other reproductive harm. Work in a
well ventilated area.

●

Oils, fuels and fluids contained in vehicles as well as waste produced by
component wear contain or emit chemicals known to the State of Califor-
nia to cause cancer and birth defects or other reproductive harm. Avoid
exposure and wash any affected area immediately.

●

12-volt battery posts, terminals and related accessories contain lead and
lead compounds which are known to cause brain damage. Wash your
hands after handling. (



504

General maintenance

Listed below are the general maintenance items that should be
performed  at  the  intervals  specified  in  the  “Owner’s  Warranty
Information  Booklet”  or  “Owner’s  Manual  Supplement/Sched-
uled Maintenance Guide”. It is recommended that any problem
you  notice  should  be  brought  to  the  attention  of  your  Toyota
dealer or qualified service shop for advice.

Engine compartment

Items

Check points

12-volt battery

Check the connections.

(

Brake fluid

Is the brake fluid at the correct level? (

P. 524)

Engine/power

control

unit coolant

Is the engine/power control unit coolant at the
correct level?

(

Engine oil

Is the engine oil at the correct level? (

P. 515)

Exhaust system

There should not be any fumes or strange
sounds.

Radiator/condenser

The radiator and condenser should be free from
foreign objects.

(

Washer fluid

Is there sufficient washer fluid?

(

505

Mainten

Vehicle interior

Items

Check points

Accelerator pedal

• The accelerator pedal should move smoothly

(without uneven pedal effort or catching).

Hybrid

transmission

“Park” mechanism

• When parked on a slope and the shift position

is in P, is the vehicle securely stopped?

Brake pedal

• Does the brake pedal move smoothly?
• Does the brake pedal have appropriate clear-

ance from the floor?

(

P. 667)

• Does the brake pedal have the correct

amount of free play?

(

P. 667)

Brakes

• The vehicle should not pull to one side when

the brakes are applied.

• The brakes should work effectively.
• The brake pedal should not feel spongy.
• The brake pedal should not get too close to

the floor when the brakes are applied.

Head restraints

• Do the head restraints move smoothly and

lock securely?

Indicators/buzzers

• Do the indicators and buzzers function prop-

erly?

Lights

• Do all the lights come on?

Parking brake

• Does the parking brake pedal move

smoothly?

• When parked on a slope and the parking

brake is on, is the vehicle securely stopped?

Seat belts

• Do the seat belts operate smoothly?
• The seat belts should not be damaged.

Seats

• Do the seat controls operate properly?

Steering wheel

• Does the steering wheel rotate smoothly?
• Does the steering wheel have the correct

amount of free play?

• There should not be any strange sounds com-

ing from the steering wheel.

506

Vehicle exterior

Items

Check 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 leakage

after the vehicle has been parked.

Tires

• Is the tire inflation 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 ventilation
before performing maintenance checks.

507

Mainten

Emission inspection and maintenance (I/M)

programs

The OBD system determines that a problem exists somewhere in the
emission control system. Your vehicle may not pass the I/M test and
may need to be repaired. Contact your Toyota dealer to service the
vehicle.

●

When the 12-volt battery is disconnected or discharged
Readiness codes that are set during ordinary driving are erased.
Also, depending on your driving habits, the readiness codes may
not be completely set.

●

When the fuel tank cap is loose
The malfunction indicator lamp comes on indicating a temporary
malfunction and your vehicle may not pass the I/M test.

The error code in the OBD system will not be cleared unless the vehi-
cle is driven 40 or more times.

Contact your Toyota dealer to prepare the vehicle for re-testing.

Some states have vehicle emission inspection programs which
include OBD (On Board Diagnostics) checks. The OBD system
monitors the operation of the emission control system.

If the malfunction indicator lamp comes on

Your vehicle may not pass the I/M test in the following situations:

When the malfunction indicator lamp still remains on after sev-
eral driving trips

If your vehicle does not pass the I/M test

508

Do-it-yourself service precautions

If you perform maintenance by yourself, be sure to follow the
correct procedure as given in these sections.

Items

Parts and tools

12-volt battery
condition
(



• Grease

• Conventional wrench (for terminal clamp bolts)

Brake fluid level
(



P. 524)

• SAE J1703 or FMVSS No.116 DOT 3 or SAE J1704

or FMVSS No.116 DOT 4 brake fluid

• Rag or paper towel
• Funnel (used only for adding brake fluid)

Engine/power
control unit cool-
ant level
(



• “Toyota Super Long Life Coolant” or a similar high

quality ethylene glycol-based non-silicate, non-
amine, non-nitrite and non-borate coolant with long-
life hybrid organic acid technology

For the U.S.A.:
“Toyota Super Long Life Coolant” is pre-mixed with
50% coolant and 50% deionized water.

For Canada:
“Toyota Super Long Life Coolant” is pre-mixed with
55% coolant and 45% deionized water.

• Funnel (used only for adding coolant)

Engine oil level
(



P. 515)

• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)

Fuses (

P. 558)

• Fuse with same amperage rating as original

Hybrid battery
(traction battery)
air intake vent
(



P. 546)

• Vacuum cleaner, etc.

• Phillips screwdriver

Light bulbs
(



P. 563)

• Bulb with same number and wattage rating as origi-

nal

• Phillips screwdriver
• Flathead screwdriver

• Wrench

Radiator and con-
denser (



509

Mainten

Tire inflation

pressure

(



P. 537)

• Tire pressure gauge

• Compressed air source

Washer fluid
(



P. 526)

• 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 display
(

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 rags, 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 contains 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. (

■

Safety glasses

Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.

Items

Parts and tools

511

Mainten

Hood

Pull the hood lock release lever.

The hood will pop up slightly.

Pull the auxiliary catch lever to
the left and lift the hood.

Hold the hood open by inserting
the supporting rod into the slot.

Release the lock from the inside of the vehicle to open the hood.

512

WARNING

■

Pre-driving check

Check that the hood is fully closed and locked.
If the hood is not locked properly, it may open while the vehicle is in motion
and cause an accident, which may result in death or serious injury.

■

After installing the support rod into the slot

Make sure the rod supports the hood securely from falling down on to your
head or body.

■

When closing the hood

NOTICE

■

When closing the hood

Be sure to return the supporting rod to its clip before closing the hood. Clos-
ing the hood without returning the support rod properly could cause the
hood to bend.

When closing the hood, take extra care
to prevent your fingers etc. from being
caught.

513

Mainten

Positioning a floor jack

◆

Front

◆

Rear

2WD models
AWD models

When using a floor jack, follow the instructions in the manual
provided with the jack and perform the operation safely.
When raising your vehicle with a floor jack, position the jack cor-
rectly. Improper placement may damage your vehicle or cause
injury.

514

Engine compartment

Engine coolant reservoir

(



Fuse boxes

(



P. 558)

Engine oil level dipstick

(



P. 515)

Engine oil filler cap (



P. 516)

Brake fluid reservoir

(



P. 524)

12-volt battery

(



Power control unit coolant
reservoir

(



Radiator

(



Condenser

(



Electric cooling fans
Washer fluid tank (



P. 526)

515

Mainten

With the engine at operating temperature and turned off, check the oil
level on the dipstick.

■

Checking the engine oil

Park the vehicle on level ground. After warming up the engine
and turning off the hybrid system, wait more than 5 minutes for
the oil to drain back into the bottom of the engine.
Holding a rag under the end,
pull the dipstick out.

Wipe the dipstick clean.
Reinsert the dipstick fully.
Holding a rag under the end, pull the dipstick out and check the
oil level.

Low
Normal
Excessive

Wipe the dipstick and reinsert it fully.

Engine oil

516

■

Adding engine oil

If the oil level is below or near
the low level mark, add engine
oil of the same type as that
already in the engine.

Make sure to check the oil type and prepare the items needed
before adding oil.

Remove the oil filler cap by turning it counterclockwise.
Add engine oil slowly, checking the dipstick.
Install the oil filler cap by turning it clockwise.

■

Engine oil consumption

A certain amount of engine oil will be consumed while driving. In the following
situations, oil consumption may increase, and engine oil may need to be
refilled in between oil maintenance intervals.

●

When the engine is new, for example directly after purchasing the vehicle or
after replacing the engine

●

If low quality oil or oil of an inappropriate viscosity is used

●

When driving at high engine speeds or with a heavy load, or when driving
while accelerating or decelerating frequently

●

When leaving the engine idling for a long time, or when driving frequently
through heavy traffic

Engine oil selection



P. 664

Oil quantity (Low



Full)

1.6 qt. (1.5 L, 1.3 Imp.qt.)

Items

Clean funnel

517

Mainten