2018 TOYOTA PRIUS PLUG-IN HYBRID sensor

335
5Driving
PRIUS PHV_OM_OM47C99E_(EE)5-1. Before driving
Driving the vehicle ............. 336
Cargo and luggage ............ 348
Trailer towing ..................... 350
5-2. Driving procedures
Power (ignition) switch ....... 351
Hybrid transmission ........... 357
Turn signal lever ................ 363
Parking brake .................... 364
5-3. Operating the lights
and wipers
Headlight switch ................ 365
AHS (Adaptive High-beam
System) ........................... 369
Fog light switch .................. 375
Windshield wipers and
washer ............................. 376
5-4. Refueling
Opening the fuel tank
cap ................................... 3795-5. Using the driving
support systems
Toyota Safety Sense ......... 383
PCS (Pre-Crash Safety
system) ............................ 395
LDA (Lane Departure Alert
with steering control) ....... 407
RSA (Road Sign Assist)..... 417
Dynamic radar cruise
control with full-speed
range ............................... 422
Driving mode select
switch............................... 437
Speed limiter ...................... 439
BSM
(Blind Spot Monitor) ......... 442
• The Blind Spot Monitor
function .......................... 450
• The Rear Crossing
Traffic Alert function ...... 454
Toyota parking
assist-sensor ................... 459
Intelligent Clearance
Sonar ............................... 470
S-IPA (Simple Intelligent
Parking Assist
System) ........................... 483
Driving assist systems ....... 518
5-6. Driving tips
Winter driving tips .............. 525

3665-3. Operating the lights and wipers
PRIUS PHV_OM_OM47C99E_(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 is in
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
position. Daytime running lights are not designed for use at night.
■ Headlight control sensor
Follow me home system
IO53PH031
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.

3675-3. Operating the lights and wipers
PRIUS PHV_OM_OM47C99E_(EE)
5
Driving
■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
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
OFF.
To turn the lights on again, turn the power switch to ON mode, or turn the light
switch off or position once and then back to the or posi-
tion.
■ 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 or turned to ACCES-
SORY mode 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. 738)

3695-3. Operating the lights and wipers
PRIUS PHV_OM_OM47C99E_(EE)
5
Driving
AHS (Adaptive High-beam System)
●Adjusts the brightness and illuminated area of the high beams
according to the vehicle speed.
● Operates the variable high
beams so that the area around
vehicles ahead is partially not
illuminated while all other areas
continue to be illuminated with
the high beams.
The variable high beams help opti-
mize forward visibility while reduc-
ing the dazzling effect on the
drivers of vehicles ahead.
● Adjusts the intensity of the high beams, while driving on a curve, so
that the area in the direction that the vehicle is turning will be illumi-
nated more brightly than other areas.
● Adjusts the distance that the low beams are projected according to
the distance to a preceding vehicle.
The Adaptive High-beam System uses a camera sensor located
behind the upper portion of the windshield to assess the bright-
ness of the lights of vehicles ahead, streetlights, etc., and auto-
matically controls the headlight light distribution as necessary.
Illuminated area of the high beams
Illuminated area of the low beams
WARNING
■ Limitations of the Adaptive High-beam System
Do not rely on the Adaptive High-beam System. Always drive safely, taking
care to observe your surroundings and turning the high beam on or off man-
ually if necessary.
■ To prevent incorrect operation of the Adaptive High-beam system
Do not overload the vehicle.

3725-3. Operating the lights and wipers
PRIUS PHV_OM_OM47C99E_(EE)
■Conditions in which the light distribution control of the headlights
changes automatically
●When all of the following conditions are met, the high beams will be turned
on automatically and the system will operate:
• The vehicle speed is approximately 60 km/h (37 mph) or more.
*
*
: The area in the direction that the vehicle is turning will be illuminated more
brightly than other areas while driving on a curve.
●When all of the following conditions are met, the variable high beams will
turn on and the distance that the low beams are projected will be adjusted
automatically, depending on the location of vehicles ahead:
• The vehicle speed is approximately 60 km/h (37 mph) or more.
• There are vehicles ahead with headlights or tail lights turned on.
• The area ahead of the vehicle is dark.
●If any of the following conditions is met, the high beams or variable high
beams will be changed to the low beams automatically:
• The vehicle speed is below approximately 40 km/h (25 mph).
• The area ahead of the vehicle is not dark.
• There are many vehicles ahead.
• Vehicles ahead are moving quickly and the high beams may blind the
drivers of the other vehicles.
■Camera sensor detection information
●The high beams may not be automatically changed to the variable high
beams in the following situations:
• When vehicles ahead suddenly appear from a curve
• When the vehicle is cut in front of by another vehicle
• When vehicles ahead are hidden from sight due to repeated curves, road
dividers or roadside trees
• When vehicles ahead appear from the faraway lane on wide road
• When vehicles ahead have no lights
●The high beams may be changed to the variable high beams if a vehicle
ahead that is using fog lights without its headlights turned on is detected.
●House lights, street lights, traffic signals, and illuminated billboards or signs
may cause the high beams to change to the variable high beams, cause the
high beams not to change to the variable high beams, or change the area
that is not illuminated.

3735-3. Operating the lights and wipers
PRIUS PHV_OM_OM47C99E_(EE)
5
Driving
●The following factors may affect the amount of time taken to turn the high
beam on or off, or the speed by which the areas not illuminated change:
• The brightness of headlights, fog lights, and tail lights of vehicles ahead
• The movement and direction of vehicles ahead
• When a vehicle ahead only has operational lights on one side
• When a vehicle ahead is a two-wheeled vehicle
• The condition of the road (gradient, curve, condition of the road surface
etc.)
• The number of passengers and amount of luggage
●The light distribution control of the headlights may change unexpectedly.
●Bicycles or similar objects may not be detected.
●In the situations shown below, the system may not be able to accurately
detect surrounding brightness levels. This may cause the low beams to
remain on or the high beams to cause problems for pedestrians, vehicles
ahead or other parties. In these cases, manually switch between the high
and low beams.
• In bad weather (rain, snow, fog, sandstorms etc.)
• The windshield is obscured by fog, mist, ice, dirt etc.
• The windshield is cracked or damaged.
• The camera sensor is deformed or dirty.
• The camera sensor temperature is extremely high.
• Surrounding brightness levels are equal to those of headlights, tail lights
or fog lights.
• Vehicles ahead have headlights that are either switched off, dirty, are
changing color, or are not aimed properly.
• The vehicle is hit by water, snow, dust, etc. from a preceding vehicle.
• When driving through an area of intermittently changing brightness and
darkness.
• When frequently and repeatedly driving ascending/descending roads, or
roads with rough, bumpy or uneven surfaces (such as stone-paved
roads, gravel tracks etc.).
• When frequently and repeatedly taking curves or driving on a winding
road.
• There is a highly reflective object ahead of the vehicle, such as a sign or
a mirror.
• The back of a vehicle ahead is highly reflective, such as a container on a
truck.
• The vehicle’s headlights are damaged or dirty.
• The vehicle is listing or tilting, due to a flat tire, a trailer being towed etc.
• The high beam and low beam are repeatedly being switched between in
an abnormal manner.
• The driver believes that the high beam may be causing problems or dis-
tress to other drivers or pedestrians nearby.

3765-3. Operating the lights and wipers
PRIUS PHV_OM_OM47C99E_(EE)
Windshield wipers and washer
The wiper operation is selected by moving the lever as follows.
Off
Rain-sensing operation
Low speed operation
High speed operation
Temporary operation
When “AUTO” is selected, the wip-
ers 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 “AUTO” is selected.
Increases the sensitivity
Decreases the sensitivity
Operating the wiper lever
IO53PH037
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3775-3. Operating the lights and wipers
PRIUS PHV_OM_OM47C99E_(EE)
5
Driving
Washer/wiper dual operation
The wipers will automatically oper-
ate a couple of times after the
washer squirts.
■ The windshield wipers and washer can be operated when
The power switch is in ON mode.
■ Dripping prevention wiper sweep
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.
■ Effects of vehicle speed on wiper operation
Vehicle speed affects the intermittent wiper interval.
■ Raindrop sensor
● If the wiper switch is turned to the “AUTO” 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 -10C
(14 F) or lower, automatic operation may not occur. In this case, operate the
wipers in any mode other than “AUTO”.
■ 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. 738)
8
●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.IO53PH040