brake fluid TOYOTA PRIUS 2023 Owners Manual

17Pictorial index
PRIUS_OM_OM47F32E_(EE)Multi-information display . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 127
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 127
Energy monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 130
When the warning messages are displayed . . . . . . . . . . . . . . P. 589
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 260
Applying/releasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 260
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 452
Warning buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 260
Turn signal lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 259
Headlight switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 261
Headlights/front position lights/tail lights/
daytime running lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 261
Front fog lights/rear fog light . . . . . . . . . . . . . . . . . . . . . . . . . . P. 270
Windshield wiper and washer switch . . . . . . . . . . . . . . . . . P. 271
Rear window wiper and washer switch . . . . . . . . . . . . . . . . P. 275
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 271, 275
Adding washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 526
Emergency flasher switch . . . . . . . . . . . . . . . . . . . . . . . . . . P. 568
Fuel filler door opener. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 279
Hood lock release lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 511
Tilt and telescopic steering lock release lever . . . . . . . . . . P. 203
Air conditioning system . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 458
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 458
Rear window defogger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 463
Audio system
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: Refer to “Navigation and multimedia system Owner’s manual”.
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23Pictorial index
PRIUS_OM_OM47F32E_(EE)Multi-information display . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 127
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 127
Energy monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 130
When the warning messages are displayed . . . . . . . . . . . . . . P. 589
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 260
Applying/releasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 260
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 452
Warning buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 260
Turn signal lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 259
Headlight switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 261
Headlights/front position lights/tail lights/
daytime running lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 261
Front fog lights/rear fog light . . . . . . . . . . . . . . . . . . . . . . . . . . P. 270
Windshield wiper and washer switch . . . . . . . . . . . . . . . . . P. 271
Rear window wiper and washer switch . . . . . . . . . . . . . . . . P. 275
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 271, 275
Adding washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 526
Emergency flasher switch . . . . . . . . . . . . . . . . . . . . . . . . . . P. 568
Fuel filler door opener. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 279
Hood lock release lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 511
Tilt and telescopic steering lock release lever . . . . . . . . . . P. 203
Air conditioning system . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 458
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 458
Rear window defogger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 463
Audio system
*
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: Refer to “Navigation and multimedia system Owner’s manual”.
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881-4. Hybrid system
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WARNING
■Road accident cautions
Observe the following precautions to reduce the risk of death or serious
injury:
● Pull your vehicle off the road, apply the parking brake, shift the shift posi-
tion to P, and turn the hybrid system off.
● Do not touch the high voltage parts, cables and connectors.
● If electric wires are exposed inside or outside your vehicle, an electric
shock may occur. Never touch exposed electric wires.
● If a fluid leak occurs, do not touch the fluid as it may be strong alkaline
electrolyte from the hybrid battery (traction battery). If it comes into contact
with your skin or eyes, wash it off immediately with a large amount of water
or, if possible, boric acid solution. Seek immediate medical attention.
● If a fire occurs in the hybrid vehicle, leave the vehicle as soon as possible.
Never use a fire extinguisher that is not meant for electric fires. Using even
a small amount of water may be dangerous.
● If your vehicle needs to be towed, do so with front wheels (2WD models)
or four wheels (AWD models) raised. If the wheels connected to the elec-
tric motor (traction motor) are on the ground when towing, the motor may
continue to generate electricity. This may cause a fire. ( P. 572)
● Carefully inspect the ground under the vehicle. If you find that liquid has
leaked onto the ground, the fuel system may have been damaged. Leave
the vehicle as soon as possible.

2304-1. Before driving
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NOTICE
■When encountering flooded roads
Do not drive on a road that has flooded after heavy rain etc. Doing 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 is flooded, be
sure to have any authorized Toyota retailer or Toyota authorized repairer, or
any reliable repairer check the following:
● Brake function
● Changes in quantity and quality of oil and fluid used for the engine, hybrid
transmission, etc.
● Lubricant condition for the bearings and suspension joints (where 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. When 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. In this case, transport the vehicle with both front wheels or all four
wheels lifted. ( P. 572)

4524-6. Driving tips
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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

5066-2. Maintenance
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■Where 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.
■Does 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:
●Engine missing, stumbling or pinging
●Appreciable loss of power
●Strange engine noises
●A fluid leak under the vehicle (However, water dripping from the air condi-
tioning system after use is normal.)
●Change in exhaust sound (This may indicate a dangerous carbon monoxide
leak. Drive with the windows open and have the exhaust system checked
immediately.)
●Flat-looking tires, excessive tire squeal when cornering, uneven tire wear
●Vehicle pulls to one side when driven straight on a level road
●Strange noises related to suspension movement
●Loss of brake effectiveness, spongy feeling brake pedal, pedal almost
touches the floor, vehicle pulls to one side when braking
●Engine coolant temperature continually higher than normal (P. 583, 645)
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.

5096-3. Do-it-yourself maintenance
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Maintenance and care
WARNING
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become el ectrically 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. 118,
120) 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.
● 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 experience discom-
fort, consult a doctor.
■ 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. 520)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.

5106-3. Do-it-yourself maintenance
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NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air.
■ If the brake fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads
wear or when the fluid level in the accumulator is high.
If the reservoir needs frequent refilling, it may indicate a serious problem.

5797-2. Steps to take in an emergency
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When trouble arises
If you think something is wrong
●Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● High coolant temperature warning light flashes or comes on
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the hybrid system
● Engine missing, stumbling or running roughly
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, spongy feeling, pedal almost touches
the floor
If you notice any of the following symptoms, your vehicle proba-
bly needs adjustment or repair. Contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

5807-2. Steps to take in an emergency
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If a war ning light tur ns on or a warning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
Brake system warning light and warning buzzer (red
indicator)*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer. Continuing to
drive the vehicle may be dangerous.
Brake system warning light (yellow indicator)
Indicates a malfunction in:
• The regenerative braking system; or
• The electronically controlled brake system
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.