engine TOYOTA PRIUS PLUG-IN HYBRID 2022 Workshop Manual

565
7Maintenance and care
Prius Plug-in Hybrid_OM_OM47E75E_(EE)7-1. Maintenance and care
Cleaning and protecting
the vehicle exterior .......... 566
Cleaning and protecting
the vehicle interior ........... 572
7-2. Maintenance
Maintenance
requirements.................... 578
7-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ...................... 581
Hood .................................. 584
Positioning a floor jack ....... 586
Engine compartment.......... 587
Tires ................................... 600
Tire inflation pressure ........ 608
Wheels ............................... 610
Replacing the tire ............... 612
Air conditioning filter .......... 624
Wiper insert
replacement ..................... 628
Electronic key battery ........ 631
Checking and replacing
fuses ................................ 634
Light bulbs ......................... 638

5687-1. Maintenance and care
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
WARNING
QWhen washing the vehicle
Do not apply water to the inside of the engine compartment. Doi ng so may
cause the electrical components etc. to catch fire.
Q While charging
Do not wash the vehicle.
Doing so may cause the electrical components to malfunction or catch fire
and also you may get an electric shock that may result in death or serious
injury.
Q When cleaning the windshield
O When a wet rag or similar is held close to the raindrop sensor
O If something bumps against the windshield
O If you directly touch the raindrop sensor body or if something bumps into
the raindrop sensor
Q Precautions regarding the exhaust pipe
Exhaust gasses cause the exhaust pipe to become quite hot.
When washing the vehicle, be careful not to touch the pipe unti l it has
cooled sufficiently, as touching a hot exhaust pipe can cause b urns.
Q Precaution regarding the rear bumper with Blind Spot Monitor (if
equipped)
If the paint of the rear bumper is chipped or scratched, the sy stem may mal-
function. If this occurs, consult any authorized Toyota retaile r or Toyota
authorized repairer, or any reliable repairer.
Set the wiper switch to the off position.
If the wiper switch is in the posi-
tion, the wipers may operate unexpect-
edly in the following situations, and may
result in hands being caught or other
serious injuries and cause damage to the
wiper blades.
O When the upper part of the windshield
where the raindrop sensor is located is
touched by hand
Off

5797-2. Maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
7
Maintenance and care
QWhere to go for maintenance service?
In order to maintain your vehicle in the best possible condition, Toyota recom-
mends that maintenance service operations as well as other inspections and
repairs be carried out by authorized Toyota retailers or Toyota authorized
repairers, or any reliable repairers. For repairs and services covered by your
warranty, please visit an authorized Toyota retailer or repairer, who will use
genuine Toyota parts in repairing any difficulties you may encounter. There
can also be advantages in utilizing authorized Toyota retailers or repairers for
non-warranty repairs and services, as members of the Toyota network will be
able to expertly assist you with any difficulties you may encounter.
Your Toyota retailer or Toyota authorized repairer, or any reliable repairer will
perform all of the scheduled maintenance on your vehicle reliably and eco-
nomically due to their experience with Toyota vehicles.
QDoes your vehicle need repairs?
Be on the alert for changes in performance and sounds, and visual tip-offs
that indicate service is needed. Some important clues are:
OEngine missing, stumbling or pinging
OAppreciable loss of power
OStrange engine noises
OA fluid leak under the vehicle (However, water dripping from the air condi-
tioning system after use is normal.)
OChange in exhaust sound (This may indicate a dangerous carbon monoxide
leak. Drive with the windows open and have the exhaust system checked
immediately.)
OFlat-looking tires, excessive tire squeal when cornering, uneven tire wear
OVehicle pulls to one side when driven straight on a level road
OStrange noises related to suspension movement
OLoss of brake effectiveness, spongy feeling brake pedal, pedal almost
touches the floor, vehicle pulls to one side when braking
OEngine coolant temperature continually higher than normal (P. 659, 703)
If you notice any of these clues, take your vehicle to any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer as soon as pos-
sible. Your vehicle may need adjustment or repair.

5817-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
7
Maintenance and care
Do-it-yourself ser vice precautions
If you perform maintenance by yourself, be sure to follow the
correct procedure as given in these sections.
ItemsParts and tools
12-volt battery
condition
(P. 594)• Warm water • Baking soda • Grease
• Conventional wrench (for terminal clamp bolts)
• Distilled water
Engine/power
control unit
coolant level
(P. 591)• “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
“Toyota Super Long Life Coolant” is pre-mixed with
50% coolant and 50% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
(P. 588)• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses (P. 6 3 4 )• Fuse with same amperage rating as original
Hybrid battery
(traction battery)
air intake vent
(P. 573)
• Vacuum cleaner, etc.
• Flathead screwdriver
Light bulbs
(P. 638)
• Bulb with same number and wattage rating as origi-
nal
• Flathead screwdriver
• Wrench
Radiator and
condenser
(P. 593)

Tire inflation
pressure
(P. 608)• Tire pressure gauge
• Compressed air source
Washer fluid
(P. 598)• Water or washer fluid containing antifreeze (for win-
ter use)
• Funnel (used only for adding water or washer fluid)

5827-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
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.
Q When working on the engine compartment
O Make sure that the “Accessory”, “Ignition ON” or mileage display (P. 2 1 3 )
on the main display and the “READY” indicator are both off.
O Keep hands, clothing and tools away from the moving fan.
O 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.
O Do not leave anything that may burn easily, such as paper and rags, in the
engine compartment.
O Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes
are flammable.
O Be extremely cautious when working on the 12-volt battery. It contains poi-
sonous and corrosive sulfuric acid.
O Take care because brake fluid can harm your hands or eyes and damage
painted surfaces. If fluid gets on your hands or in your eyes, flush the
affected area with clean water immediately. If you still experi ence discom-
fort, consult a doctor.
Q 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 coo lant temperature
is high. ( P. 593)
Q Safety glasses
Wear safety glasses to prevent flying or falling material, flui d spray, etc.
from getting in your eyes.

5837-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
7
Maintenance and care
NOTICE
QIf you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air.
Q If the brake fluid level is low or high
It is normal for the brake fluid level to go down slightly as t he brake pads
wear or when the fluid level in the accumulator is high.
If the reservoir needs frequent refilling, it may indicate a se rious problem.

5877-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
7
Maintenance and care
Engine compar tment
IO73PH114
Engine coolant reservoir
( P. 591)
Fuse boxes ( P. 634)
Engine oil level dipstick
( P. 588)
Engine oil filler cap ( P. 589)
Washer fluid tank ( P. 598)
12-volt battery ( P. 5 9 4 )
Power control unit coolant
reservoir ( P. 5 9 1 )
Radiator ( P. 5 9 3 )
Condenser ( P. 5 9 3 )
Electric cooling fans
1
2
3
4
5
6
7
8
9
10

5887-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
With the engine at operating temperature and turned off, check the oil
level on the dipstick.
QChecking 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 th e
oil level.
Low
Normal
Excessive
Wipe the dipstick and reinsert it fully.
Engine oil
1
2
3
4
5
1
2
3
6

5897-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
7
Maintenance and care
QAdding 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.
Q 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 ne ed to be
refilled in between oil maintenance intervals.
O When the engine is new, for example directly after purchasing the vehicle or
after replacing the engine
O If low quality oil or oil of an inappropriate viscosity is used
O When driving at high engine speeds or with a heavy load, or when driving
while accelerating or decelerating frequently
O When leaving the engine idling for a long time, or when driving frequently
through heavy traffic
Engine oil selection P. 715
Oil quantity (Low  Full)1.5 L (1.6 qt., 1.3 lmp. qt.)
ItemsClean funnel
1
2
3

5907-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
WARNING
QUsed engine oil
O Used engine oil contains potentially harmful contaminants which may
cause skin disorders such as inflammation and skin cancer, so c are
should be taken to avoid prolonged and repeated contact. To rem ove used
engine oil from your skin, wash thoroughly with soap and water.
O Dispose of used oil and filters only in a safe and acceptable manner. Do
not dispose of used oil and filters in household trash, in sewe rs or onto the
ground. Call any authorized Toyota retailer or Toyota authorize d repairer,
or any reliable repairer, service station or auto parts store f or information
concerning recycling or disposal.
O Do not leave used engine oil within the reach of children.
NOTICE
QTo prevent serious engine damage
Check the oil level on a regular basis.
Q When replacing the engine oil
O Be careful not to spill engine oil on the vehicle components.
O Avoid overfilling, or the engine could be damaged.
O Check the oil level on the dipstick every time you refill the vehicle.
O Be sure the engine oil filler cap is properly tightened.