2022 TOYOTA PRIUS PRIME power steering

324
PRIUS PRIME_OM_OM47E74U_(U)
5-1. Before driving
NOTICE
■When driving the vehicle
● Do not depress the accelerator and brake pedals at the same tim e during
driving, as this may restrain the hybrid system output.
● Do not use the accelerator pedal or depress the accelerator and brake
pedals at the same time to hold the vehicle on a hill.
■ When parking the vehicle
Always set the parking brake, and shift the shift position to P. Failure to do
so may cause the vehicle to move or the vehicle may accelerate suddenly if
the accelerator pedal is accidentally depressed.
■ Avoiding damage to vehicle parts
● Do not turn the steering wheel fully in either direction and ho ld it there for
an extended period of time.
Doing so may damage the power steering motor.
● When driving over bumps in the road, drive as slowly as possible to avoid
damaging the wheels, underside of the vehicle, etc.
■ If you get a flat tire while driving
A flat or damaged tire may cause the following situations. Hold the steering
wheel firmly and gradually depress the brake pedal to slow down the vehi-
cle.
● It may be difficult to control your vehicle.
● The vehicle will make abnormal sounds or vibrations.
● The vehicle will lean abnormally.
Information on what to do in case of a flat tire: P. 689

PRIUS PRIME_OM_OM47E74U_(U)
3375-2. Driving procedures
5
Driving
WARNING
■When starting the hybrid system
Always start the hybrid system while sitting in the driver’s seat. Do not
depress the accelerator pedal while starting the hybrid system under any
circumstances.
Doing so may cause an accident resulting in death or serious in jury.
■ Stopping the hybrid system in an emergency
● If you want to stop the hybrid system in an emergency while driving the
vehicle, press and hold the power switch for more than 2 second s, or
press it briefly 3 times or more in succession. ( P. 661)
However, do not touch the power switch while driving except in an emer-
gency. Turning the hybrid system off while driving will not cause loss of
steering or braking control, however, power assist to the steer ing will be
lost. This will make it more difficult to steer smoothly, so you should pull
over and stop the vehicle as soon as it is safe to do so.
● If the power switch is operated while the vehicle is running, a warning
message will be shown on the multi-information display and a buzzer
sounds.
● When restarting the hybrid system after an emergency shutdown w hile
driving, press the power switch. When restarting the hybrid sys tem after
stopping the vehicle, change the shift position to P and then press the
power switch.
■ When parking
Exhaust gases include harmful carbon monoxide (CO), which is co lorless
and odorless. Observe the following precautions.
Failure to do so may cause exhaust gases to enter the vehicle a nd may
lead to an accident caused by light-headedness, or may lead to death or a
serious health hazard.
● If the vehicle is in a poorly ventilated area or a closed area, such as a
garage, stop the hybrid system.
● Do not leave the vehicle with the hybrid system operating for a long time. If
such a situation cannot be avoided, park the vehicle in an open space and
ensure that exhaust fumes do not enter the vehicle interior.
● Do not leave the hybrid system operating in an area with snow build-up, or
where it is snowing. If snowbanks build up around the vehicle w hile the
hybrid system is operating, exhaust gases may collect and enter the vehi-
cle.

PRIUS PRIME_OM_OM47E74U_(U)
4455-5. Using the driving support systems
5
Driving
Approximately 3.3 ft. (100 cm)
Approximately 4.9 ft. (150 cm)
Approximately 2.0 ft. (60 cm)
Approximately 3.3 ft. (100 cm)
• The detection range is shown in
the illustration to the right. How-
ever, the sensor will not detect
the obstacle if it is too close.
• For details regarding obstacle detection in the side areas.
(P. 446)
• The distance at which an obsta- cle can be detected and whether
it can be detected depends on
the shape and condition of the
obstacle.
The obstacle detecti on range can be changed. ( P. 7 4 9 )
■Operation conditions
The power switch is turned on.
●Front corner sensors:
• Shift position is not in P
• Vehicle speed is approximately 6 mph (10 km/h) or less
● Front side sensors/rear side sensors:
• Shift position is not in P
• Vehicle speed is approximately 6 mph (10 km/h) or less
• Steering wheel is turned approximately 90  or more
● Front center sensors:
• Shift position is not in P or R
• Vehicle speed is approximately 6 mph (10 km/h) or less
● Rear corner sensors/rear center sensors:
Shift position is in R
■ Intuitive parking assist pop-up display
P. 466
Detection range of the sensors
1
2
3
4

486
PRIUS PRIME_OM_OM47E74U_(U)
5-5. Using the driving support systems
When the Simple Advanced Park ing Guidance System cannot be
operated, or when operation is stopped, canceled, etc., the one of the
following message is displayed on the multi-information display . Take
appropriate action acc ording to the display.
■When it is not possible to operate
Multi-information display messages
MessageSituation/Handling method
The system may be malfunctioning.
 Turn the power switch off and then start the
hybrid system.
Have the vehicle inspected by your Toyota
dealer if the message is displayed again.
There may be a system failure.
Power steering equipment is temporarily overheat-
ing.
Turn the power switch off, wait for a little
while, and then start the hybrid system again.
The hybrid system is not operating.
Start the hybrid system.
Ice, snow, dirt, etc., has adhered to the sensor.
Remove any ice, snow, dirt, etc.
The sensor is frozen.
Once the sensor thaws, the system will return
to normal.
The 12-volt battery has been removed and rein-
stalled.
Drive the vehicle straight ahead for 5 seconds
or more at a speed of approximately 22 mph
(35 km/h) or higher.
The S-APGS switch is operated when the vehicle
speed exceeds 19 mph (30 km/h).
Operate the switch when the vehicle speed is
approximately 19 mph (30 km/h) or less.
Assist control is started while the steering wheel is
held.
Rest your hands on the steering wheel with-
out applying any force. Assist control will
start.

496
PRIUS PRIME_OM_OM47E74U_(U)
5-5. Using the driving support systems
Driving assist systems
◆ECB (Electronically Controlled Brake System)
The electronically controlled system generates braking force co rre-
sponding to the brake operation
◆ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenl y,
or if the brakes are applied while driving on a slippery road surface
◆Brake assist
Generates an increased level of braking force after the brake p edal
is depressed when the system de tects a panic stop situation
◆VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or
turning on slippery road surfaces.
◆Enhanced VSC (Enhanced Vehicle Stability Control)
Provides cooperative control of the ABS, TRAC, VSC and EPS.
Helps to maintain directional stability when swerving on slippe ry
road surfaces by controlling steering performance.
◆TRAC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from
spinning when starting the vehicl e or accelerating on slippery roads
To keep driving safety and perf ormance, the following systems
operate automatically in respon se to various driving situations.
Be aware, however, that these systems are supplementary and
should not be relied upon too heav ily when operating the vehi-
cle.

PRIUS PRIME_OM_OM47E74U_(U)
4975-5. Using the driving support systems
5
Driving
◆Hill-start assist control
Helps to reduce the backward movement of the vehicle when start -
ing on an uphill
◆EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to
turn the steering wheel.
The slip indicator light will flash
while the TRAC/VSC/ABS sys-
tems are operating.
If the vehicle gets stuck in mud, dirt or snow, the TRAC system may
reduce power from the hybrid system to the wheels. Pressing to
turn the system off may make it easier for you to rock the vehicle in
order to free it.
To turn the TRAC system off,
quickly press and release .
The “Traction Control Turned Off”
will be shown on the multi-informa-
tion display.
Press
again to turn the sys-
tem back on.
When the TRAC/VSC/ABS systems are operating
Disabling the TRAC system

PRIUS PRIME_OM_OM47E74U_(U)
4995-5. Using the driving support systems
5
Driving
■ECB operating sound
ECB operating sound may be heard in the following cases, but it does not
indicate that a malfunction has occurred.
● Operating sound heard from the engine compartment when the brak e pedal
is operated.
● Motor sound of the brake system heard from the front part of th e vehicle
when the driver’s door is opened.
● Operating sound heard from the engine compartment when one or t wo min-
utes passed after the stop of the hybrid system.
■ EPS operation sound
When the steering wheel is operated, a motor sound (whirring so und) may be
heard. This does not indicate a malfunction.
■ Automatic reactivation of TRAC and VSC systems
After turning the TRAC and VSC systems off, the systems will be automati-
cally re-enabled in the following situations:
● When the power switch is turned off
● If only the TRAC system is turned off, the TRAC will turn on wh en vehicle
speed increases
If both the TRAC and VSC systems are turned off, automatic re-e nabling
will not occur when vehicle speed increases.
■ Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the s ystem from
overheating when there is frequent steering input over an exten ded period of
time. The steering wheel may feel heavy as a result. Should thi s occur, refrain
from excessive steering input or stop the vehicle and turn the hybrid system
off. The EPS system should return to normal within 10 minutes.
■ Electric power steering system wa rning light (warning buzzer)
P. 672

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PRIUS PRIME_OM_OM47E74U_(U)
6Interior features
6-1. Using the air conditioning system and defogger
Automatic air conditioning system (vehicles with
7-inch display) ................. 508
Automatic air conditioning system (vehicles with
11.6-inch display) ............ 520
Remote Air Conditioning System ............................ 531
Heated steering wheel/ seat heaters .................... 535 6-2. Using the interior lights
Interior lights list ................ 537• Front interior light .......... 538
• Front personal lights ..... 538
• Rear interior light .......... 539
6-3. Using the storage features List of storage features ..... 540• Glove box...................... 541
• Console box .................. 541
• Cup holders .................. 542
• Bottle holders/door pockets ................. 543
• Auxiliary boxes.............. 544
• Seat back pockets ........ 544
Luggage compartment features ........................... 545
6-4. Using the other interior features
Other interior features ....... 549 • Sun visors ..................... 549
• Vanity mirrors................ 549
• Power outlets ................ 550
• USB charging ports....... 551
• Wireless charger ........... 553
• Armrest ......................... 562
• Coat hooks.................... 562
• Assist grips ................... 563
Garage door opener.......... 564