2023 TOYOTA PRIUS brake sensor

4044-5. Using the driving support systems
PRIUS_OM_OM47F32E_(EE)
NOTICE
■Preventing sensor malfunctions
● If the area around a sensor is subjected to an impact, equipment may not
operate properly due to a sensor malfunction. Have the vehicle inspected
at any authorized Toyota retailer or Toyota authorized repairer, or any reli-
able repairer.
● When using a high-pressure washer to wash the vehicle, do not spray
water directly on the sensors. The sensors may not function properly if
subjected to an impact from strong water pressure.
● When using steam to wash the vehicle, do not direct steam too close to
the sensors. The sensors may not function properly if subjected to steam.
■ Preventing unnecessary operation
In the following situations, turn the Parking Support Brake function off. The
system may operate even though there is no possibility of a collision.
● A chassis roller, chassis dynamo, free roller or similar equipment is being
used for an inspection, etc.
● The vehicle is being loaded onto a ship, truck or other transport vessel
● The suspension has been lowered or tires that have a different size than
the genuine tires are equipped
● The height of the vehicle has drastically changed due to the carried load
(the nose tilts up or down).
● A towing eyelet is installed
● When using an automatic car wash
■ Notes when washing the vehicle
 P. 393

4094-5. Using the driving support systems
4
Driving
PRIUS_OM_OM47F32E_(EE)
The guidance screen is displayed on the multi-information display.
Assistance level indicator
Displays a gauge indicating the
level until the vehicle’s stopping
position/the position at which assist
control ends.
Stop display
When illuminated, depress the
brake pedal and stop the vehicle at
once.
Operation display area
Displays the operating condition of the Simple Intelligent Parking Assist
System.
Advice display
Follow the instructions on the display and perform any indicated opera-
tions. As an example, the illustration shows the display indicating it is nec-
essary to depress the brake pedal in order to control the vehicle speed and
to confirm the safety of your surroundings.
S-IPA switch icon
Displayed when the assist mode can be changed and the system can be
turned off or on using the S-IPA switch.
Steering wheel auto operation display
Displays when the steering wheel auto operation is being performed.
Toyota parking assist-sensor display/door position (open/close) dis-
play
P. 382
■S-IPA indicator inside the meter (P. 114)
This indicator illuminates when the steering wheel auto operation is being
performed by the Simple Intelligent Parking Assist System. After control
ends, the indicator blinks for a short period of time and then turns off.
■Toyota parking assist-sensor pop-up display
While the Simple Intelligent Parking Assist System is operating, if the Toyota
parking assist-sensor detects an obstacle, the Toyota parking assist-sensor
display automatically pops up on the guidance screen (P. 382), regardless
of whether the Toyota parking assist-sensor is on or off. (P. 381)
Guidance screen
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4224-5. Using the driving support systems
PRIUS_OM_OM47F32E_(EE)
When the vehicle has nearly
reached the take-off point, a
high-pitched beep is emitted
and assist control finishes.
From there, grasp the steer-
ing wheel and proceed for-
ward.
■ Exit parallel parking assist mode
● During assist control, if the driver determines that they are at a position
where take-off is possible and operates the steering wheel, assist control is
stopped at that position.
● Assist control cannot be used if there are no parked vehicles ahead, or if the
gap between the front of your vehicle and the vehicle parked ahead is too
large.
● When using the exit parallel parking assist mode, the assist mode may not
be able to operate depending on the surrounding environment.
14
NOTICE
● The detection range of the sensors (P. 386) is limited. Directly confirm
the safety of your surroundings, and if there is a possibility of a contact
accident, stop the vehicle by depressing the brake pedal.
● It may not be possible to detect objects that are low to the ground. Directly
confirm the safety of your surroundings and, if it seems the vehicle may
make contact with an obstacle, stop the vehicle by depressing the brake
pedal.
● When departing for a position from which you can take off, directly confirm
the safety of your surroundings.

4294-5. Using the driving support systems
4
Driving
PRIUS_OM_OM47F32E_(EE)
■ Tips for using the back-in parking assist mode
● Leave a gap of approximately 1 m
(3.3 ft.) from any parked vehicles and
approach the target parking spot. If the
gap between your vehicle and any
parked vehicles is too large, the front
side sensors and rear side sensors may
not be able to detect the parked vehi-
cles.
● Stop so that the center of the target
parking spot is perpendicular to the vehi-
cle. Furthermore, only push the S-IPA
switch when the vehicle is at a complete
stop.
NOTICE
● If the road surface has any dips or inclines, the target parking spot cannot
be correctly set. Therefore, the vehicle may be parked at an angle or may
deviate from the parking spot. In these cases, do not use the back-in park-
ing assist mode.
● When parking in a narrow space, the vehicle will come close to adjacent
vehicles. If it seems the vehicle may make contact, stop the vehicle by
depressing the brake pedal.
● It may not be possible to detect objects that are low to the ground. Directly
confirm the safety of your surroundings and, if it seems the vehicle may
make contact with an obstacle, stop the vehicle by depressing the brake
pedal.
● Depending on the surrounding environment, such as other parked vehi-
cles, the vehicle may be parked at an angle or may deviate from the park-
ing spot. Manually adjust vehi cle alignment as necessary.
1 m
(3.3 ft.)

4394-5. Using the driving support systems
4
Driving
PRIUS_OM_OM47F32E_(EE)
WARNING
●Observe the following precautions, as the sensors may stop functioning
properly which may lead to an accident.
• Do not subject the sensor to strong shocks by hitting it, etc. The sen-
sors may not function properly.
• When using a high-pressure washer to wash the vehicle, do not spray
water directly on the sensors. Equipment may not function properly if
subjected to an impact from strong water pressure. If the vehicle
bumper strikes something, equipment may not operate properly due to
a sensor malfunction. Have the vehicle inspected at any authorized
Toyota retailer or Toyota authoriz ed repairer, or any reliable repairer.
● In the following situations, the sensors may not operate normally and may
lead to an accident. Drive carefully.
• Obstacles cannot be detected in the side areas until a scan of the side
areas is completed. ( P. 388)
• Even after the scan of the side areas is completed, obstacles such as
other vehicles, people or animals that approach from the sides cannot
be detected.
• The sensor is frozen (if it thaws, the system returns to normal).
A warning message may display at particularly low temperatures due to
the sensor freezing and it may not detect parked vehicles.
• The sensor is blocked by someone’s hand.
• The vehicle is tilted a large amount.
• The temperature is extremely hot or cold.
• The vehicle is driven on undulating roads, slopes, gravel roads, in areas
with tall grass, etc.
• An ultrasonic wave source is nearby, such as the horn or sensors of
another vehicle, a motorcycle engine or the air brake of a large vehicle.
• Heavy rain or a water strikes the vehicle.
• The angle of the sensor may be deviated when assist control starts
even if there is a parked vehicle in the target parking spot. Have the
vehicle inspected at any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
• Do not install any accessories within the sensor detection range.

5967-2. Steps to take in an emergency
PRIUS_OM_OM47F32E_(EE)
■ If “Auto Power OFF to Conserve Battery” is shown
The power switch has been turned off by the automatic power off function.
When starting the hybrid system next time, operate the hybrid system for
approximately 5 minutes to recharge the 12-volt battery.
■ If “Engine Oil Level Low Add or Replace” is displayed
The engine oil level may be low. Check the level of the engine oil, and add
engine oil if necessary. This message may be displayed if the vehicle is
stopped on a slope. Move the vehicle to a level surface and check if the mes-
sage disappears.
■ If “Accelerator and Brake Pedals Pressed Simultaneously” is shown
The accelerator and brake pedals are being depressed simultaneously.
( P. 221)
Release the accelerator pedal and depress the brake pedal.
■ If a message that indicates the malfunction of front camera is displayed
The following systems may be suspended until the problem shown in the
message is resolved. ( P. 294, 580)
● PCS (Pre-Collision System) (if equipped)
● LTA (Lane Tracing Assist) (if equipped)
● AHB (Automatic High Beam) (if equipped)
● RSA (Road Sign Assist) (if equipped)
● Dynamic radar cruise control with full-speed range (if equipped)
■ If a message that indicates the malfunction of radar sensor is displayed
The following systems may be suspended until the problem shown in the
message is resolved. ( P. 294, 580)
● PCS (Pre-Collision System) (if equipped)
● LTA (Lane Tracing Assist) (if equipped)
● Dynamic radar cruise control with full-speed range (if equipped)
■ If “Radar Cruise Control Unavailable See Owner’s Manual” is shown
The dynamic radar cruise control with full-speed range system is suspended
temporarily or until the problem show n in the message is resolved. (causes
and coping methods: P. 294)
■ If “Radar Cruise Control Unavailable” is shown
The dynamic radar cruise control with full-speed range system cannot be
used temporarily. Use the system when it becomes available again.

6327-2. Steps to take in an emergency
PRIUS_OM_OM47F32E_(EE)
WARNING
■When using the compact spare tire (if equipped)
● Remember that the spare tire provided is specifically designed for use with
your vehicle. Do not use your spare tire on another vehicle.
● Do not use more than one compact spare tire simultaneously.
● Replace the spare tire with a standard tire as soon as possible.
● Avoid sudden acceleration, abrupt steering, sudden braking and shifting
operations that cause sudden engine braking.
■ When the compact spare tire is attached (if equipped)
The vehicle speed may not be correctly detected, and the following systems
may not operate correctly:
Also, not only can the following system not be utilized fully, but it may even
negatively affect the drive-train components:
• E-Four (Electric Four wheel drive system)*
*: If equipped
■ Speed limit when using the compact spare tire (if equipped)
Do not drive at speeds in excess of 80 km/h (50 mph) when a compact
spare tire is installed on the vehicle.
The compact spare tire is not designed for driving at high speeds. Failure to
observe this precaution may lead to an accident causing death or serious
injury.
■ After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their
storage location to reduce the possibility of personal injury during a collision
or sudden braking.
• ABS & Brake assist
• VSC
•TRC
• EPS
• AHB (Automatic High Beam)*
• PCS (Pre-Collision System)*
• LTA (Lane Tracing Assist)*
• Dynamic radar cruise control with
full-speed range*
• Cruise control*
• BSM (Blind Spot Monitor)*
• Toyota parking assist-sensor*
• Parking Support Brake function*
• Simple Intelligent Parking Assist
System*
• Toyota parking assist monitor*
• Navigation system*
• Panoramic view monitor*

684What to do if... (Troubleshooting)
PRIUS_OM_OM47F32E_(EE)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? (P. 585)
●The parking brake indicator is on
Is the parking brake released? (P. 260)
Depending on the situation, other types of warning buzzer may also sound.
(P. 580, 589)
●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. (P. 93)
To stop the alarm, turn the power switch to ON mode or start the hybrid sys-
tem.
●Is the electronic key left inside the vehicle?
Check the message on the multi-information display. (P. 589)
●When a warning light turns on or a warning message is displayed, refer to
P. 580, 589.
A warning buzzer sounds during driving
An alarm is activated and the horn sounds
(vehicles with alarm)
A warning buzzer sounds when leaving the vehicle
A warning light turns on or a warning message is displayed