engine oil TOYOTA PRIUS 2021 Owners Manual (in English)

17Pictorial index
PRIUS_OM_OM47E09U_(U)Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 275
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 430
Precautions against car wash (vehicles with rain-sensing
windshield wipers) . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . P. 498
Replacing the wiper insert . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 556
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 283
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 283
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 667
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 532
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . P. 672
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 430
Checking/rotation/tire pressur e warning system . . . . . . . . .P. 532
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . P. 611, 631
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 515
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 515
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 668
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 656
Headlights/daytime running lights . . . . . . . . . . . . . . . . . . . . P. 263
Parking lights/front side marker lights/
LED accent lights
*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 263
Fog lights
* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 273
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 261
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 263
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 263
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 255
Rear side maker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 263
4
5
6
7
Light bulbs of the exterior lights for driving
(Replacing method: P. 568, Watts: P. 674)
*: If equipped
8
9
10
11
12
13
14
15

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2. Instrument cluster
Warning lights inform the driver of malfunctions in any of the vehicle’s
systems.
Warning lights
Warning lightsPages
*1Brake system warning light (U.S.A.) P. 592
*1Brake system warning light (Canada)
(Red)P. 592
*1Brake system warning light
(Yellow)P. 592
*1Charging system warning light
P. 592
*1Low engine oil pressure warning lightP. 592
*1Malfunction indicator lamp (U.S.A.) P. 592
*1Malfunction indicator lamp (Canada)P. 592
*1SRS warning light P. 593
*1ABS warning light (U.S.A.) P. 593
*1ABS warning light (Canada)P. 593
*1Electric power steering system warning light
(Red/yellow)P. 593
*1,2PCS warning light (if equipped)
P. 593
LTA indicator (Orange) (if equipped)P. 593
*1Slip indicator light P. 594

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1132. Instrument cluster
2
Instrument cluster
■Main display and multi-information display
*: The displayed indicator changes according to the current driving mode.
■
Multi-information display (symbol display*)
*: These symbols are displayed along with a message. Also, the sy mbol dis-
plays listed here are only an example, and different symbols ma y be dis-
played according to the contents of the multi-information displ ay.
Indicators and symbols displayed on the display
IndicatorsPages
EV drive mode indicator P. 252
*“ECO MODE” indicator P. 347
*“PWR MODE” indicatorP. 347
EV Indicator P. 130
Symbol displayPages
Smart key system P. 245
Brake Override System/Drive-Start
Control/
Parking Support Brake function (if
equipped) P. 596
LTA (Lane Tracing Assist) (if equipped)P. 320
P. 320
Low engine oil pressure warning
(Canada only) P. 596

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4-1. Before driving
NOTICE
■When encountering flooded roads
Do not drive on a road that has flooded after heavy rain etc. D oing so may
cause the following serious damage to the vehicle:
● Engine stalling
● Short in electrical components
● Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle i s flooded, be
sure to have your Toyota dealer check the following:
● Brake function
● Changes in quantity and quality of oil and fluid used for the e ngine, hybrid
transmission, etc.
● Lubricant condition for the bearings and suspension joints (whe re possi-
ble), and the function of all joints, bearings, etc.
If the shift control system is damaged by flooding, it may not be possible to
shift the shift position to P, or from P to other positions. Wh en the shift posi-
tion cannot be changed from P to any other position, the front wheels will
lock, and you will be unable to tow the vehicle with the front wheels on the
ground, as the front wheels may be locked. In this case, transp ort the vehi-
cle with both front wheels or all four wheels lifted. ( P. 584)

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4-6. Driving tips
Winter driving tips
●Use fluids that are appropriate t o the prevailing outside tempera-
tures. • Engine oil
• Engine/power control unit coolant
• Washer fluid
● Have a service technician inspect the condition of the 12-volt bat-
tery.
● Have the vehicle fitted with four snow tires or purchase a set of tire
chains for the front tires.
Ensure that all tires are the same size and brand, and that cha ins match
the size of the tires.
Perform the following accordi ng to the driving conditions:
● Do not try to forcibly open a window or move a wiper that is fr ozen.
Pour warm water over the frozen area to melt the ice. Wipe away
the water immediately to p revent it from freezing.
● To ensure proper operation of the climate control system fan,
remove any snow that has accumulated on the air inlet vents in
front of the windshield.
● Check for and remove any excess ic e or snow that may have accu-
mulated on the exterior lights, vehicle’s roof, chassis, around the
tires or on the brakes.
● Remove any snow or mud from the bottom of your shoes before
getting in the vehicle.
Carry out the necessary preparations and inspections before
driving the vehicle in winter. Always drive the vehicle in a ma n-
ner appropriate to the prevailing weather conditions.
Preparation for winter
Before driving the vehicle

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5076-2. Maintenance
6
Maintenance and care
WARNING
■If your vehicle is no t properly maintained
Improper maintenance could result in serious damage to the vehi cle 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. Wor k 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 har m. 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. ( P. 524)

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6-2. Maintenance
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 “Own er’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 s ervice shop for advice.
Engine compartment
ItemsCheck points
12-volt batteryCheck the connections. (P. 524)
Brake fluidIs the brake fluid at the correct level? ( P. 528)
Engine/power control
unit coolantIs the engine/power control unit coolant at the
correct level? (P. 522)
Engine oilIs the engine oil at the correct level? (P. 519)
Exhaust systemThere should not be any fumes or strange
sounds.
Radiator/condenserThe radiator and condenser should be free from
foreign objects. (P. 524)
Washer fluidIs there sufficient washer fluid? (P. 530)

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6-3. Do-it-yourself maintenance
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. 5 2 4 )•Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
( P. 5 2 8 )
• 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
( P. 5 2 2 )
• “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. 5 1 9 )• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses ( P. 563)• Fuse with same amperage rating as original
Hybrid battery
(traction battery)
air intake vent
( P. 5 5 1 )• Vacuum cleaner, etc.
• Phillips screwdriver
Light bulbs
( P. 5 6 8 )
• Bulb with same number and wattage rating as origi-
nal
• Phillips screwdriver
• Flathead screwdriver• Wrench
Radiator and con-
denser ( P. 524)

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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

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6-3. Do-it-yourself maintenance
Engine compartment
Engine coolant reservoir ( P. 522)
Fuse boxes ( P. 563)
Engine oil level dipstick ( P. 519)
Engine oil filler cap ( P. 520)
Brake fluid reservoir ( P. 528) 12-volt battery (
P. 524)
Power control unit coolant
reservoir ( P. 522)
Radiator ( P. 524)
Condenser ( P. 524)
Electric cooling fans
Washer fluid tank ( P. 530)1
2
3
4
5
6
7
8
9
10
11