washer fluid TOYOTA PRIUS PRIME 2021 Owners Manual (in English)

19Pictorial index
PRIUS PRIME_OM_OM47D71U_(U)Multi-information display . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 220
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 220
Energy monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 223
When the warning messages are displayed . . . . . . . . . . . . . . P. 684
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 352
Applying/releasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 352
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 507
Warning buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 352
Turn signal lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 351
Headlight switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 353
Headlights/parking lights/tail lights/
daytime running lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 353
Fog lights
*1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 363
Windshield wipers and washer switch . . . . . . . . . . . . . . . . P. 365
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 365
Adding washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 612
Emergency flasher switch . . . . . . . . . . . . . . . . . . . . . . . . . . P. 664
Fuel filler door opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 373
Hood lock release lever. . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 597
Tilt and telescopic steering lock release lever . . . . . . . . . . P. 308
Air conditioning system . . . . . . . . . . . . . . . . . . . . . . . . P. 512, 524
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 512, 525
Rear window defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 516, 527
Audio system
*2
*1: If equipped
*2: Refer to “NAVIGATION SYSTEM OWNER’S MANUAL” or
“MULTIMEDIA OWNER’S MANUAL”.
5
6
7
8
9
10
11
12
13
14

PRIUS PRIME_OM_OM47D71U_(U)
3695-3. Operating the lights and wipers
5
Driving
■The windshield wipers and washer can be operated when
The power switch is in ON mode.
■Dripping prevention wiper sweep (vehicles with rain-sensing windshield
wipers)
After washing and wiping operation several times, the wipers operate one
more time after a short delay to prevent dripping. However, this function will
not operate while driving.
■Raindrop sensor (vehicles with rain-sensing windshield wipers)
●If the wiper switch is turned to the position while the power switch is in
ON mode, the wipers will operate once to show that AUTO mode is acti-
vated.
●If the wiper sensitivity is adjusted to higher, the wiper may operate once to
indicate the change of sensitivity.
●If the temperature of the raindrop sensor is 185F (85C) or higher, or 5F
(-15C) or lower, automatic operation may not occur. In this case, operate
the wipers in any mode other than AUTO mode.
■If no windshield washer fluid sprays
Check that the washer nozzles are not blocked, if there is washer fluid in the
washer fluid tank.
■Customization
Settings of AUTO mode operation can be changed.
(Customizable features: P. 753) ●The raindrop sensor judges the amount
of raindrops.
An optical sensor is adopted. It may not
operate properly when sunlight from the
rising or setting of the sun intermittently
strikes the windshield, or if bugs, etc.
are present on the windshield.

370
PRIUS PRIME_OM_OM47D71U_(U)
5-3. Operating the lights and wipers
WARNING
■Caution regarding the use of windshield wipers in AUTO mode (vehi-
cles with rain-sensing windshield wipers)
The windshield wipers may operate unexpectedly if the sensor is touched or
the windshield is subject to vibration in AUTO mode. Take care that your fin-
gers, etc. do not become caught in the windshield wipers.
■Caution regarding the use of washer fluid
When it is cold, do not use the washer fluid until the windshield becomes
warm. The fluid may freeze on the windshield and cause low visibility. This
may lead to an accident, resulting in death or serious injury.
NOTICE
■When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■When the washer fluid tank is empty
Do not operate the switch continually as the washer fluid pump may over-
heat.
■When a nozzle becomes blocked
In this case, contact your Toyota dealer.
Do not try to clear it with a pin or other object. The nozzle will be damaged.
■To prevent 12-volt battery discharge
Do not leave the wipers on longer than necessary when the hybrid system
is off.

507
PRIUS PRIME_OM_OM47D71U_(U)
5-6. Driving tips
5
Driving
Winter driving tips
●Use fluids that are appropriate to 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 chains match
the size of the tires.
Perform the following according to the driving conditions:
●Do not try to forcibly open a window or move a wiper that is frozen.
Pour warm water over the frozen area to melt the ice. Wipe away
the water immediately to prevent 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 ice 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 man-
ner appropriate to the prevailing weather conditions.
Preparation for winter
Before driving the vehicle

590
PRIUS PRIME_OM_OM47D71U_(U)
7-2. 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 “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
ItemsCheck points
12-volt batteryCheck the connections. (P. 607)
Brake fluidIs the brake fluid at the correct level? (P. 610)
Engine/power control
unit coolantIs the engine/power control unit coolant at the
correct level? (P. 604)
Engine oilIs the engine oil at the correct level? (P. 601)
Exhaust systemThere should not be any fumes or strange
sounds.
Radiator/condenserThe radiator and condenser should be free from
foreign objects. (P. 606)
Washer fluidIs there sufficient washer fluid? (P. 612)

PRIUS PRIME_OM_OM47D71U_(U)
5957-3. Do-it-yourself maintenance
7
Maintenance and care
Tire inflation
pressure
(P. 623)• Tire pressure gauge
• Compressed air source
Washer fluid
(P. 6 1 2 )• 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. 210) 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. (P. 606)
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.
ItemsParts and tools

600
PRIUS PRIME_OM_OM47D71U_(U)
7-3. Do-it-yourself maintenance
Engine compartment
IO73PH112
Engine coolant reservoir
(P. 604)
Fuse boxes (P. 650)
Engine oil level dipstick
(P. 601)
Engine oil filler cap (P. 602)
Brake fluid reservoir
(P. 610)Washer fluid tank (P. 612)
12-volt battery (P. 607)
Power control unit coolant
reservoir (P. 604)
Radiator (P. 606)
Condenser (P. 606)
Electric cooling fans1
2
3
4
5
6
7
8
9
10
11

612
PRIUS PRIME_OM_OM47D71U_(U)
7-3. Do-it-yourself maintenance
Open the lid.
Check the washer fluid level on the level gauge.
“NORMAL”
“LOW”
If the washer fluid level is at
“LOW”, add washer fluid.
Washer fluid
1
2
1
2
3

PRIUS PRIME_OM_OM47D71U_(U)
6137-3. Do-it-yourself maintenance
7
Maintenance and care
WARNING
■When adding washer fluid
Do not add washer fluid when the hybrid system is hot or operating as
washer fluid contains alcohol and may catch fire if spilled on the engine etc.
NOTICE
■Do not use any fluid other than washer fluid
Do not use soapy water or engine antifreeze instead of washer fluid.
Doing so may cause streaking on the vehicle’s painted surfaces, as well as
damaging the pump leading to problems of the washer fluid not spraying.
■Diluting washer fluid
Dilute washer fluid with water as necessary.
Refer to the freezing temperatures listed on the label of the washer fluid bot-
tle.

793Alphabetical index
PRIUS PRIME_OM_OM47D71U_(U)
Engine
Accessory mode ................... 340
Compartment ........................ 600
Engine switch........................ 338
Exhaust gas precautions ........ 56
Hood ..................................... 597
How to start the hybrid
system ................................ 338
Identification number ............ 732
If the hybrid system will not
start .................................... 709
If your vehicle has to be
stopped in an emergency ... 665
Ignition switch (power
switch) ................................ 338
Overheating .......................... 721
Power switch......................... 338
Engine coolant ......................... 604
Capacity ................................ 735
Checking ............................... 604
Preparing and checking
before winter....................... 507
Engine oil ................................. 601
Capacity ................................ 734
Checking ............................... 601
Oil pressure warning light ..... 674
Preparing and checking
before winter....................... 507
Engine switch (power
switch) .................................... 338
Auto power off function ......... 340
Changing the power switch
modes................................. 340
If your vehicle has to be
stopped in an emergency ... 665
Starting the hybrid system .... 338EPS (Electronic Power
Steering) ................................ 502
Function ................................ 502
Warning light......................... 675
EV auto mode ............................ 87
EV driving range ...................... 108
EV mode ..................................... 87
EV/HV mode selection
switch ....................................... 90
Event data recorder (EDR)........ 11
Exhaust gas precautions .......... 56
Flat tire ..................................... 692
Floor mats .................................. 26
Fluid
Brake .................................... 737
Transmission ........................ 736
Washer ................................. 612
Fog lights ................................. 363
Replacing light bulbs ............ 660
Switch ................................... 363
Footwell lights ......................... 541
Front doors .............................. 281
Front fog lights ........................ 363
Replacing light bulbs ............ 660
Switch ................................... 363
Front passenger occupant
classification system .............. 50
Front passenger’s seat
belt reminder light................. 677
Front seat concentrated
airflow mode
(S-FLOW) ....................... 514, 526
F