sensor TOYOTA PRIUS 2022 Repair Manual

PRIUS_OM_OM47F01U_(U)
4054-5. Using the driving support systems
4
Driving
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.

410
PRIUS_OM_OM47F01U_(U)
4-5. Using the driving support systems
■Sensors
Detect the vehicle to help determine the parking spot.
Front side sensors
Rear side sensors
Precautions during use
1
2
● The sensor detection range when using
back-in parking assist mode
Intended parking spot
● The sensor detection range when using
parallel parking assist mode
Intended parking spot
1
1

PRIUS_OM_OM47F01U_(U)
4134-5. Using the driving support systems
4
Driving
WARNING
●Do not use the system in the following situations, as the syste m may be
unable to correctly assist you in reaching the target parking s pot and may
lead to an unexpected accident.
• In an area that is not a parking lot
• A parking lot that is not paved and has no parking space lines , such as
a sand or gravel parking lot
• A parking lot that has a slope or undulations in the road
• A frozen, snow-covered or slippery road
• The asphalt is melting due to hot weather
• There is an obstacle between the vehicle and the target parking spot
• Using tire chains or compact spare tire (if equipped)
● Do not use tire other than that provided by the manufacturer. T he system
may not operate properly. When replacing tires, contact your Toyota
dealer.
● The system may not be able position the vehicle in the set location in the
following situations.
• The tires are extremely worn or the tire pressure is low
• The vehicle is carrying very heavy load
• The vehicle is tilted due to having luggage, etc. located on one side of
the vehicle
• There are road heaters installed in the parking lot to prevent the road
surface from freezing.
In any other situations when the set position and vehicle position greatly
differ, have the vehicle inspected by your Toyota dealer.
● Make sure to observe the following precautions regarding the exit parallel
parking assist mode.
Exit parallel parking assist mode is a function used when depar ting from a
parallel parking spot. However, this function may not be usable if obsta-
cles or people are detected in front of the vehicle. Only use this function
when departing from a parallel parking spot. In the event that the steering
control operates, either turn the system off using the S-APGS s witch or
operate the steering wheel to stop the control.
● If exit parallel parking assist mode is mistakenly used in the following situ-
ations, the vehicle may make contact with an obstacle.
The departure function is operated in a direction where an obstacle is
present, but the obstacle is not detected by the side sensors ( situations
such as when the vehicle is directly beside a pole).

414
PRIUS_OM_OM47F01U_(U)
4-5. Using the driving support systems
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 prope rly if
subjected to an impact from strong water pressure. If the vehicle
bumper strikes something, equipment may not operate properly du e to
a sensor malfunction. Have the vehicle inspected at your Toyota dealer.
● 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. 364)
• 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 road s, 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 larg e 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 your Toyota dealer.
• Do not install any accessories within the sensor detection ran ge.

494
PRIUS_OM_OM47F01U_(U)
6-1. Maintenance and care
WARNING
■When washing the vehicle
Do not apply water to the inside of the engine compartment. Doing so may
cause the electrical components etc. to catch fire.
■ When cleaning the windshield (vehicles with rain-sensing windshield
wipers)
● When a wet rag or similar is held close to the raindrop sensor
● If something bumps against the windshield
● If you directly touch the raindrop sensor body or if something bumps into
the raindrop sensor
■ Precautions regarding the exhaust pipe
Exhaust gasses cause the exhaust pipe to become quite hot.
When washing the vehicle, be careful not to touch the pipe unti l it has
cooled sufficiently, as touching a hot exhaust pipe can cause b urns.
■ Precaution regarding the rear bumper with Blind Spot Monitor (i f
equipped)
If the paint of the rear bumper is chipped or scratched, the system may mal-
function. If this occurs, consult your Toyota dealer.
Set the wiper switch to the off position.
If the wiper switch is in the posi-
tion, the wipers may operate unexpect-
edly in the following situations, and may
result in hands being caught or other
serious injuries and cause damage to the
wiper blades.
● When the upper part of the windshield
where the raindrop sensor is located is
touched by hand
Off

5947-2. Steps to take in an emergency
PRIUS_OM_OM47F01U_(U)
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front door), side impact sensors (front), side
impact sensors (rear), driver’s seat belt buckle switch, front passenger occu-
pant classification system (ECU and sensors), “AIR BAG ON” indi cator light,
“AIR BAG OFF” indicator light, front passenger’s seat belt buck le switch, seat
belt pretensioners, airbags, interconnecting wiring and power s ources.
( P. 35)
■ Front passenger detection sensor, seat belt reminder and warnin g
buzzer
● If luggage is placed on the front passenger seat, the front pas senger detec-
tion sensor may cause the warning light to flash and the warnin g buzzer to
sound even if a passenger is not sitting in the seat.
● If a cushion is placed on the seat, the sensor may not detect a passenger,
and the warning light may not operate properly.
■ Electric power steering system wa rning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the vol tage tempo-
rarily drops, the electric power steering system warning light may come on
and the warning buzzer may sound.
■ If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
● Is the fuel tank cap loose?
If it is, tighten it securely.
The malfunction indicator lamp will go off after several drivin g trips.
If the malfunction indicator lamp does not go off even after several trips, con-
tact your Toyota dealer as soon as possible.

6057-2. Steps to take in an emergency
PRIUS_OM_OM47F01U_(U)
7
When trouble arises
■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. 289, 588)
● 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 m alfunction of radar sensor is displayed
The following systems may be suspended until the problem shown in the
message is resolved. ( P. 289, 588)
● 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 sho wn
The dynamic radar cruise control with full-speed range system is suspended
temporarily or until the problem shown in the message is resolv ed. (causes
and coping methods: P. 289)
■ If “Radar Cruise Control Unavailable” is shown
The dynamic radar cruise control with full-speed range system c annot be
used temporarily. Use the system when it becomes available agai n.
■ If “Maintenance Required Soon” is displayed (U.S.A. only)
Indicates that all maintenance according to the driven distance on the mainte-
nance schedule
* should be performed soon.
Comes on approximately 4500 miles (7200 km) after the message has been
reset.
If necessary, perform maintenance. Please reset the message aft er the main-
tenance is performed. ( P. 502)
*: Refer to the separate “Scheduled Maintenance Guide” or “Owner’ s Manual
Supplement” for the maintenance interval applicable to your veh icle.
■ If “Maintenance Required Visit Your Dealer” is displayed (U.S.A . only)
Indicates that all maintenance is required to correspond to the driven distance
on the maintenance schedule
*.
Comes on approximately 5000 miles (8000 km) after the message has been
reset. (The indicator will not work properly unless the message has been
reset.)
Perform the necessary maintenance. Please reset the message aft er the
maintenance is performed. ( P. 502)
*: Refer to the separate “Scheduled Maintenance Guide” or “Owner’ s Manual
Supplement” for the maintenance interval applicable to your veh icle.

688
PRIUS_OM_OM47F01U_(U)
8-2. Customization
Settings that can be changed using the multi-information display
Settings that can be changed usin g the navigation system or the
multimedia system
Settings that can be chan ged by your Toyota dealer
Definition of symbols: O = A vailable, – = Not available
■Instrument cluster (P. 98)
Customizable features
1
2
3
FunctionDefault
settingCustomized setting
Sensor sensitivity for darken-
ing the brightness of the
instrument cluster depending
on the outside brightness
Standard-2 to 2––O
Sensor sensitivity for returning
the brightness of the instru-
ment cluster to the original
level depending on the outside
brightness
Standard-2 to 2––O
123

692
PRIUS_OM_OM47F01U_(U)
8-2. Customization
■Automatic light control system (P. 257)
*1: If equipped
*2: This function cannot be customized for vehicles sold in Canada .
■
Rain-sensing windshield wipers* (  P. 2 7 1 )
*: If equipped
FunctionDefault
settingCustomized setting
Time elapsed before the
headlights turn off 30 secondsOff
–OO
60 seconds
90 seconds
Light sensor sensitivity*1Level 0Level -2 to 2–OO
Daytime running lights*2OnOff–OO
123
FunctionDefault
settingCustomized setting
Wiper operation when the
wiper switch is in the
position
Rain-sensing operation
Intermittent operation
linked to vehi- cle speed
(with interval
adjuster)
––O
123

PRIUS_OM_OM47F01U_(U)
6938-2. Customization
8
Vehicle specifications
■RSA (Road Sign Assist)* ( P. 3 1 7 )
*: If equipped
■
BSM (Blind Spot Monitor)* (  P. 344)
*: If equipped
■
Intuitive parking assist* (  P. 358)
*: If equipped
FunctionDefault
settingCustomized setting
RSA (Road Sign Assist)OnOffO––
Excess speed notification
methodDisplay only
No notification
O––Display and buzzer
Excess speed notification
level1 mph
(2 km/h)
3 mph
(5 km/h)
O––5 mph
(10 km/h)
Other notifications method
(No-entry notification)Display only
No notification
O––Display and buzzer
123
FunctionDefault settingCustomized setting
Outside rear view mirror indi-
cator brightnessBrightDim––O
123
FunctionDefault settingCustomized setting
Detection distance of the front
center sensorsFarNear––O
Detection distance of the rear
center sensorsFarNear––O
Buzzer volume31 to 5––O
123