2023 TOYOTA PRIUS sensor

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4Driving
PRIUS_OM_OM47F32E_(EE)4-1. Before driving
Driving the vehicle ............. 220
Cargo and luggage ............ 231
Trailer towing
(2WD models).................. 233
Trailer towing
(AWD models) ................. 243
4-2. Driving procedures
Power (ignition) switch ....... 244
EV drive mode ................... 250
Hybrid transmission ........... 253
Turn signal lever ................ 259
Parking brake .................... 260
4-3. Operating the lights
and wipers
Headlight switch ................ 261
AHB (Automatic High
Beam) .............................. 266
Fog light switch .................. 270
Windshield wipers and
washer ............................. 271
Rear window wiper and
washer ............................. 275
4-4. Refueling
Opening the fuel tank
cap ................................... 2774-5. Using the driving
support systems
Toyota Safety Sense ......... 282
PCS (Pre-Collision
System) ........................... 296
LTA
(Lane Tracing Assist)....... 307
RSA (Road Sign Assist)..... 323
Dynamic radar cruise
control with full-speed
range ............................... 329
Cruise control..................... 346
Driving mode select
switch............................... 351
Speed limiter ...................... 353
BSM
(Blind Spot Monitor) ......... 356
• The Blind Spot Monitor
function .......................... 372
• The Rear Crossing
Traffic Alert function ...... 375
Toyota parking
assist-sensor ................... 381
Parking Support Brake
function ............................ 394
S-IPA (Simple Intelligent
Parking Assist
System) ........................... 405
GPF (Gasoline Particulate
Filter) system ................... 440
Driving assist systems ....... 441
4-6. Driving tips
Hybrid vehicle driving
tips ................................... 449
Winter driving tips .............. 452

2634-3. Operating the lights and wipers
4
Driving
PRIUS_OM_OM47F32E_(EE)
This system allows the headlights and front position lights to be turned
on for 30 seconds when the power switch is off.
Pull the lever toward you and
release it with the light switch in
the or position after
turning the power switch off.
Pull the lever toward you and
release it again to turn off the
lights.
■ Daytime running light system
To make your vehicle more visible to other drivers during daytime driving, the
daytime running lights turn on automatically whenever the hybrid system is
started and the parking brake is released with the headlight switch in the
or position. Daytime running lights are not designed for use at
night.
■ Headlight control sensor
Extended Headlight Lighting system
The sensor may not function properly if an
object is placed on the sensor, or anything
that blocks the sensor is affixed to the
windshield.
Doing so interferes with the sensor
detecting the level of ambient light and
may cause the automatic headlight sys-
tem to malfunction.
Air conditioning operation may also be
interrupted.

2644-3. Operating the lights and wipers
PRIUS_OM_OM47F32E_(EE)
■ Automatic light off system
● When the light switch is in the or position: The headlights turn
off automatically if the power switch is turned to ACCESSORY mode or
turned off.
● When the light switch is in the position: The headlights and all lights
turn off automatically if the power switch is turned to ACCESSORY mode or
turned off.
To turn the lights on again, turn the power switch to ON mode, or turn the light
switch to the or position once and then back to the or
position.
■ Automatic headlight leveling system
The level of the headlights is automatically adjusted according to the number
of passengers and the loading condition of the vehicle to ensure that the
headlights do not interfere with other road users.
■ Light reminder buzzer
A buzzer sounds when the power switch is turned off and the driver’s door is
opened while the lights are turned on.
■ 12-volt battery-saving function
In order to prevent the vehicle 12-volt battery from discharging, if the light
switch is in the position when the power switch turned off the 12-volt
battery saving function will operate and automatically turn off all the lights
after approximately 20 minutes.
When any of the following are performed, the 12-volt battery-saving function
is canceled once and then reactivated. All the lights will turn off automatically
20 minutes after the 12-volt battery-saving function has been reactivated:
● When the headlight switch is operated
● When a door is opened or closed
■ If “Headlight System Malfunction Visit Your Dealer” is displayed on the
multi-information display
The system may be malfunctioning. Have the vehicle inspected by any autho-
rized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
■ Customization
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features: P. 670)

2724-3. Operating the lights and wipers
PRIUS_OM_OM47F32E_(EE)
Rain-sensing windshield wipers
Off
Rain-sensing operation
Low speed operation
High speed operation
Temporary operation
When is selected, the wipers
will operate automatically when the
sensor detects falling rain. The
system automatically adjusts wiper
timing in accordance with rain vol-
ume and vehicle speed.
The sensor sensitivity can be adjusted when is selected.
Increases the sensitivity
Decreases the sensitivity
Washer/wiper dual
operation
Pulling the lever operates the wip-
ers and washer.
The wipers will automatically oper-
ate a couple of times after the
washer squirts.
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2734-3. Operating the lights and wipers
4
Driving
PRIUS_OM_OM47F32E_(EE)
■The windshield wipers and washer can be operated when
The power switch is in ON mode.
■ Dripping prevention wiper sweep (vehicles with rain-sensing windshield
wipers)
After washing and wiping operation se veral times, the wipers operate one
more time after a short delay to prevent dripping. However, this function will
not operate while driving.
■ Raindrop sensor (vehicles with rain-sensing windshield wipers)
● If the wiper switch is turned to the position while the power switch is in
ON mode, the wipers will operate once to show that AUTO mode is acti-
vated.
● If the wiper sensitivity is adjusted to higher, the wiper may operate once to
indicate the change of sensitivity.
● If the temperature of the raindrop sensor is 85C (185F) or higher, or -15°C
(5°F) or lower, automatic operation may not occur. In this case, operate the
wipers in any mode other than AUTO mode.
■ If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the
washer fluid tank.
■ Customization
Settings of AUTO mode operation can be changed. (Customizable features:
 P. 670)
● The raindrop sensor judges the amount
of raindrops.
An optical sensor is adopted. It may not
operate properly when sunlight from the
rising or setting of the sun intermittently
strikes the windshield, or if bugs etc. are
present on the windshield.

2744-3. Operating the lights and wipers
PRIUS_OM_OM47F32E_(EE)
WARNING
■Caution regarding the use of windshield wipers in AUTO mode (vehi-
cles with rain-sensing windshield wipers)
The windshield wipers may operate unexpectedly if the sensor is touched or
the windshield is subject to vibration in AUTO mode. Take care that your fin-
gers etc. do not become caught in the windshield wipers.
■ Caution regarding the use of washer fluid
When it is cold, do not use the washer fluid until the windshield becomes
warm. The fluid may freeze on the windshield and cause low visibility. This
may lead to an accident, resulting in death or serious injury.
NOTICE
■ When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■ When the washer fluid tank is empty
Do not operate the switch continually as the washer fluid pump may over-
heat.
■ When a nozzle becomes blocked
In this case, contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Do not try to clear it with a pin or other object. The nozzle will be damaged.
■ To prevent 12-volt battery discharge
Do not leave the wipers on longer than necessary when the hybrid system
is off.

2834-5. Using the driving support systems
4
Driving
PRIUS_OM_OM47F32E_(EE)
Two types of sensors, located behind the front grille and windshield,
detect information necessary to operate the drive assist systems.
Radar sensor
Front camera
Sensors
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2844-5. Using the driving support systems
PRIUS_OM_OM47F32E_(EE)
WARNING
■To avoid malfunction of the radar sensor
Observe the following precautions.
Otherwise, the radar sensor may not operate properly, possibly leading to
an accident resulting in death or serious injury.
● Keep the radar sensor and the radar sensor cover clean at all times.
● Do not attach accessories, stickers (including transparent stickers) or
other items to the radar sensor, radar sensor cover or surrounding area.
● Do not subject the radar sensor or its surrounding area to a strong impact.
If the radar sensor, front grille, or front bumper has been subjected to a
strong impact, have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
● Do not disassemble the radar sensor.
● Do not modify or paint the radar sensor or radar sensor cover.
● In the following cases, the radar sensor must be recalibrated. Contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer for details.
• When the radar sensor or front gr ille are removed and installed, or
replaced
• When the front bumper is replaced
Radar sensor
Radar sensor cover
If the front of the radar sensor or the
front or back of the radar sensor cover
is dirty or covered with water droplets,
snow, etc., clean it.
Clean the radar sensor and radar sen-
sor cover with a soft cloth to avoid
damaging them.
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