ABS TOYOTA PRIUS PRIME 2022 User Guide

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PRIUS PRIME_OM_OM47E74U_(U)
5-5. Using the driving support systems
WARNING
■The ABS does not operate effectively when
● The limits of tire gripping performance have been exceeded (such as
excessively worn tires on a snow covered road).
● The vehicle hydroplanes while driving at high speed on wet or s lick roads.
■ Stopping distance when the ABS is operating may exceed that of nor-
mal conditions
The ABS is not designed to shorten the vehicle’s stopping distance. Always
maintain a safe distance from the vehicle in front of you, especially in the
following situations:
● When driving on dirt, gravel or snow-covered roads
● When driving with tire chains
● When driving over bumps in the road
● When driving over roads with potholes or uneven surfaces
■ TRAC/VSC may not operate effectively when
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the TRAC/VSC system is operating. D rive the
vehicle carefully in conditions where stability and power may be lost.
■ Hill-start assist control does not operate effectively when
● Do not overly rely on hill-start assist control. Hill-start ass ist control may
not operate effectively on steep inclines and roads covered wit h ice.
● Unlike the parking brake, hill-start assist control is not inte nded to hold the
vehicle stationary for an extended period of time. Do not attempt to use
hill-start assist control to hold the vehicle on an incline, as doing so may
lead to an accident.
■ When the TRAC/ABS/VSC is activated
The slip indicator light flashes. Always drive carefully. Reckless driving may
cause an accident. Exercise particular care when the indicator light flashes.

PRIUS PRIME_OM_OM47E74U_(U)
5015-5. Using the driving support systems
5
Driving
WARNING
■When the TRAC/VSC systems are turned off
Be especially careful and drive at a speed appropriate to the r oad condi-
tions. As these are the systems to help ensure vehicle stability and driving
force, do not turn the TRAC/VSC systems off unless necessary.
■ Replacing tires
Make sure that all tires are of the specified size, brand, trea d pattern and
total load capacity. In addition, make sure that the tires are inflated to the
recommended tire inflation pressure level.
The ABS, TRAC and VSC systems will not function correctly if different tires
are installed on the vehicle.
Contact your Toyota dealer for further information when replaci ng tires or
wheels.
■ Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspensio n will affect
the driving assist systems, and may cause a system to malfunction.

PRIUS PRIME_OM_OM47E74U_(U)
6097-3. Do-it-yourself maintenance
7
Maintenance and care
Remove the reservoir cap.
Add brake fluid slowly while checking the fluid level.
Make sure to check the fluid type and prepare the necessary ite m.
■Brake fluid can absorb moisture from the air
Excess moisture in the brake fluid can cause a dangerous loss o f braking effi-
ciency. Use only newly opened brake fluid.
3
4
Fluid type SAE J1703 or FMVSS No.116 DOT 3 brake fluid
SAE J1704 or FMVSS No.116 DOT 4 brake fluid
ItemsClean funnel
WARNING
■
When filling the reservoir
Take care as brake fluid can harm your hands and 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 discomfort, see a doctor.
NOTICE
■ 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 out or when the fluid level in the accumulator is high.
If the reservoir needs frequent refilling, there may be a serious problem.

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PRIUS PRIME_OM_OM47E74U_(U)
7-3. Do-it-yourself maintenance
Pull the cover to disconnect the
tabs, and remove the cover.
Turn the portion to loosen
the jack, and slowly take out the
jack.
Be careful when handling the
jack, as it may become hot
depending on conditions.
( P. 628)
If the portion can not be loos-
ened, turn it using the jack han-
dle.
Taking out the jack
1
2A
A

PRIUS PRIME_OM_OM47E74U_(U)
6557-3. Do-it-yourself maintenance
7
Maintenance and care
Install a new light bulb then
install the bulb base to the
light unit by inserting it and
turning the bulb base clock-
wise.
Reinstall the cover to the its original position, and attach the clip
inside of the cover.
Attach the clip on the cover,
then press the center portion
of the clip to lock.
Reinsert the cover end to the
rear bumper.
Make sure to secure the 2 tabs
on the cover end.
6
7
8

6728-2. Steps to take in an emergency
PRIUS PRIME_OM_OM47E74U_(U)
SRS warning lightIndicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
 Have the vehicle inspected by your Toyota dealer
immediately.
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system
 Have the vehicle inspected by your Toyota dealer
immediately.
(Red/yellow)
Electric power steering system warning light (warning
buzzer)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
 Have the vehicle inspected by your Toyota dealer
immediately.
(Flashes or
illuminates)
PCS warning light
• When a buzzer sounds simultaneously:Indicates a malfunction has occurred in the PCS (Pre-
Collision System).
 Have the vehicle inspected by your Toyota dealer
immediately.
• When a buzzer does not sound: The PCS (Pre-Collision System) has become temporar-
ily unavailable, corrective action may be necessary.
 Follow the instructions dis played on the multi-infor-
mation display. ( P. 376, 681)
If the PCS (Pre-Collision System) or VSC (Vehicle Stability
Control) system is disabled, the PCS warning light will illu-
minate.
 P. 389
(Orange)
LTA indicator (warning buzzer)
Indicates a malfunction in the LTA (Lane Tracing Assist)
 Follow the instructions dis played on the multi-infor-
mation display. ( P. 404)
Warning lightWarning light/Details/Actions

6738-2. Steps to take in an emergency
PRIUS PRIME_OM_OM47E74U_(U)
8
When trouble arises
Slip indicator lightIndicates a malfunction in:
• The VSC system;
• The TRAC system; or
• The hill-start assist control system
 Have the vehicle inspected by your Toyota dealer
immediately.
The light will flash when the ABS, VSC or TRAC system is
operating.
High coolant temperature warning light • When the light flashes:
Indicates that the engine coolant temperature is too high
The light changes from a flashing to a solid light when
the temperature further increases
 Immediately stop the vehicle in a safe place. ( P. 718)
• When the light comes on without flashing: Indicates a malfunction in the exhaust heat recirculator
system
 Have the vehicle inspected by your Toyota dealer
immediately.
(Flashes)
(If equipped)
PKSB OFF indicator
Indicates a malfunction in the Parking Support Brake func-
tion
 Have the vehicle inspected by your Toyota dealer.
The warning light will operate as follows, even when the
system is not malfunctioning:
• The light will come on when the Parking Support Brake function is turned off ( P. 453)
• The light will come on when the Parking Support Brake function is operating ( P. 457)
• The light will flash when the system cannot be temporar- ily used ( P. 459)
Open door warning light (warning buzzer)*3
Indicates that a door is not fully closed
 Check that all the doors are closed.
Low fuel level warning light
Indicates that remaining fuel is approximately 1.7 gal.
(6.4 L, 1.4 Imp.gal.) or less
 Refuel the vehicle.
Warning lightWarning light/Details/Actions

6838-2. Steps to take in an emergency
PRIUS PRIME_OM_OM47E74U_(U)
8
When trouble arises
■Warning messages
The warning messages explained below may differ from the actual messages
according to operation conditions and vehicle specifications.
■ System warning lights
The master warning light does not come on or flash in the following cases.
Instead, a separate system warning light will come on along wit h a message
or image shown on the multi-information display.
● “Antilock Brake System Malfunction Visit Your Dealer”:
The ABS warning light comes on. ( P. 672)
● “Braking Power Low Visit Your Dealer”:
The brake system warning light (yellow) will come on. ( P. 671)
● Indicates that a door is not fully closed while the vehicle is stopped.:
The Open door warning light comes on. ( P. 673)
■ If “Visit Your Dealer” is shown
The system or part shown on the multi-information display is malfunctioning.
Have the vehicle inspected by your Toyota dealer.
■ If a message about an operation is shown
● If a message about an operation of the accelerator pedal or bra ke pedal is
shown
• A warning message about an operation of the brake pedal may be shown
while the driving assist systems such as PCS (Pre-Collision Sys tem) or
the dynamic radar cruise control with full-speed range is opera ting. If a
warning message is shown, be sure to decelerate the vehicle or follow an
instruction shown on the multi-information display.
• A warning message is shown when Brake Override System operates .
(  P. 316, 686)
• A warning message is shown when Drive-Start Control or Parking Sup-
port Brake function (if equipped) operates ( P. 316, 457). Follow the
instructions on the multi-information display.
● If a message about an operation of the power switch is shown
An instruction for operation of the power switch is shown when the incorrect
procedure for starting the hybrid system is performed or the power switch is
operated incorrectly. Follow the instructions shown on the mult i-information
display to operate the power switch again.
● If a message about a shift operation is shown
To prevent the shift position from being selected incorrectly o r the vehicle
from moving unexpectedly, the shift position may be changed aut omatically
( P. 341) or shift operation may be required. In this case, chang e the shift
position following the instructions on the multi-information display.
● If a message or image about an open/close state of a part or replenishment
of a consumable is shown
Confirm the part indicated by the multi-information display or a warning light,
and then perform the coping method such as closing the open doo r or
replenishing a consumable.

784Alphabetical index
PRIUS PRIME_OM_OM47E74U_(U)
Alphabetical index
A/C .................................... 508, 520Air conditioning eco
mode .......................... 511, 523
Air conditioning filter ............. 637
Automatic air conditioning system .... 508, 520
Eco score (A/C score)........... 243
Front seat concentrated airflow mode
(S-FLOW) ................... 510, 522
Humidity sensor ............ 519, 530
Remote Air Conditioning
System ............................... 531
ABS (Anti-lock Brake
System) .................................. 496 Function ................................ 496
Warning light ......................... 672
AHB (Automatic High Beam) ..................................... 352
Air conditioning filter .............. 637
Air conditioning
system ............................ 508, 520 Air conditioning eco
mode .......................... 511, 523
Air conditioning filter ............. 637
Automatic air conditioning system .... 508, 520
Eco score (A/C score)........... 243
Front seat concentrated airflow mode
(S-FLOW) ................... 510, 522
Humidity sensor ............ 519, 530
Remote Air Conditioning System ............................... 531
Air intake vent .......................... 100 Cleaning................................ 580 Airbags ....................................... 36
Airbag operating conditions .... 44
Airbag precaut ions for your
child ...................................... 40
Airbag warning light .............. 672
Correct driving posture ........... 28
Curtain shield airbag operating conditions ............. 45
Curtain shield airbag precautions........................... 42
Front passenger occupant
classification syst em ............ 50
General airbag precautions .... 39
Locations of airbags ............... 36
Modification and disposal of airbags ................................. 43
Side airbag operating
conditions ............................. 45
Side airbag precautions .......... 41
Side and curtain shield airbags operating
conditions ............................. 45
Side and curtain shield
airbags precautions .............. 42
SRS airbag instructions for Canadian owners ............... 768
SRS airbags ........................... 36
Anchor brackets ........................ 73
Antenna Smart key system ................. 290
Anti-lock brake system (ABS) ...................................... 496 Function ................................ 496
Warning light......................... 672
A

799Alphabetical index
PRIUS PRIME_OM_OM47E74U_(U)
Vanity lights ............................. 549Wattage ................................ 734
Vanity mirrors .......................... 549
Vehicle data recording .............. 10
Vehicle identification number ................................... 727
Vehicle proximity notification system ...................................... 93
Vehicle Stability Control (VSC) ...................................... 496
Voice command system
*
VSC (Vehicle Stability
Control) .................................. 496
Warning buzzers Approach warning ................. 419
Brake system ....... ................. 671
Intuitive parking assist .......... 444
LTA (Lane Tracing Assist) .... 395
Open door ..................... 283, 673
Parking Support Brake function ............................... 457
Pre-collision warning............. 379
Radar cruise control.............. 419
RCTA (Rear Cross Traffic Alert) ................................... 427
RSA (Road Sign Assist)........ 405
Seat belt reminder ................ 674
Shift position ......................... 341 Warning lights ......................... 202
ABS ...................................... 672
Brake Override System ........ 675
Brake system ....... ................. 671
Charging system................... 671
Drive-Start Control ................ 675
Driver’s seat belt reminder light..................................... 674
Electronic engine control system .......... ...................... 671
Electric power steering
system .......... ...................... 672
Front passenger’s seat belt reminder light ..................... 674
High coolant temperature ..... 673
Low engine oil pressure........ 671
Low fuel level ........................ 673
Malfunction indicator lamp .... 671
Master warning light ............. 674
Open door............................. 673
Parking Support Brake function............................... 675
PCS ...................................... 672
PKSB OFF indicator ............. 673
Rear passengers’ seat belt
reminder light ..................... 674
Seat belt reminder light......... 674
Slip indicator ......................... 673
SRS ...................................... 672
Tire pressure ........................ 674
V
W
*: Refer to “NAVIGATION SYSTEM OWNER’S MANUAL” or “MULTIMEDIA OWNER’S MANUAL”.