headlight TOYOTA PRIUS 2017 4.G User Guide

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PRIUS_OM_OM47B54U_(U)
4Driving
4-1. Before drivingDriving the vehicle ............. 208
Cargo and luggage ........... 219
Vehicle load limits ............. 222
Trailer towing..................... 223
Dinghy towing ................... 224
4-2. Driving procedures Power (ignition) switch ...... 225
EV drive mode .................. 231
Hybrid transmission........... 234
Turn signal lever................ 240
Parking brake .................... 241
4-3. Operating the lights and wipers
Headlight switch ................ 242
Automatic High Beam ....... 247
Fog light switch ................. 252
Windshield wipers and washer ............................ 254
Rear window wiper and washer ............................ 260
4-4. Refueling Opening the fuel tank cap .................................. 262 4-5. Using the driving support
systems
Toyota Safety Sense P ..... 267
PCS (Pre-Collision System)........................... 275
LDA (Lane Departure Alert with steering
control) ............................ 287
Dynamic radar cruise control with full-speed
range............................... 298
Cruise control .................... 313
Driving mode select switch .............................. 318
BSM (Blind Spot Monitor) ........ 320
• The Blind Spot Monitor function ......................... 325
• The Rear Cross Traffic Alert function ................. 328
Intuitive parking assist....... 333
Intelligent Clearance Sonar .............................. 344
S-APGS (Simple Advanced Parking
Guidance System) .......... 357
Rear view monitor system ............................ 392
Driving assist systems ...... 402
4-6. Driving tips Hybrid vehicle driving tips .................................. 409
Winter driving tips ............. 412

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PRIUS_OM_OM47B54U_(U)
4-3. Operating the lights and wipers
Headlight switch
Turning the end of the lever turns on the lights as follows:
U.S.A. (type A)The daytime running
lights turn on. ( →P. 245)
The side marker, park-
ing, tail, license plate
and instrument panel
lights turn on.
The headlights and all
the lights listed above
(except daytime running
lights) turn on.
The daytime running
lights turn off.
The headlights can be operated manually or automatically.
Operating instructions
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PRIUS_OM_OM47B54U_(U)
2434-3. Operating the lights and wipers
4
Driving
U.S.A. (type B)
The headlights, side
marker, parking lights,
LED accent lights (if
equipped), daytime run-
ning lights (→P. 245)
and so on turn on and
off automatically (when
the power switch is in
ON mode).
The side marker, park-
ing, LED accent (if
equipped), tail, license
plate and instrument
panel lights turn on.
The headlights and all
the lights listed above
(except daytime run-
ning lights) turn on.
The daytime running
lights turn off.1
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4
(if equipped)

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PRIUS_OM_OM47B54U_(U)
4-3. Operating the lights and wipers
CanadaThe headlights, side
marker, parking lights,
LED accent lights (if
equipped), daytime run-
ning lights ( →P. 245)
and so on turn on and
off automatically (when
the power switch is in
ON mode).
The side marker, park-
ing, LED accent (if
equipped), tail, license
plate and instrument
panel lights turn on.
The headlights and all the ligh ts listed above (except day-
time running lights) turn on.
The daytime running lights turn on. ( →P. 245)
With the headlights on, push
the lever away from you to turn
on the high beams.
Pull the lever toward you to the
center position to turn the high
beams off.
Pull the lever toward you and
release it to flash the high
beams once.
You can flash the high beams with the headlights on or off.
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Turning on the high beam headlights
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PRIUS_OM_OM47B54U_(U)
2454-3. Operating the lights and wipers
4
Driving
■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. (Illuminate dimmer than the headlight lights.)
Daytime running lights are not designed for use at night.
For the U.S.A.: Daytime running lights can be turned off by operating the
headlight switch.
● Compared to turning on the headlights, the daytime running light system
offers greater durability and consumes less electricity, so it can help improve
fuel economy.
■ Headlight control sensor (if equipped)
■ Automatic light off system
●When the headlights come on: The headlights and tail lights turn off 30 sec-
onds after a door is opened and closed if the power switch is turned to
ACCESSORY mode or turned off. (The lights turn off immediately if on
the key is pressed after all the doors are locked.)
● When only the tail lights come on: The tail lights turn off automatically if the
power switch is turned to ACCESSORY mode or turned off and the driver’s
door is opened.
To turn the lights on again, turn the power switch to ON mode, or turn th\
e light
switch off once and then back to or . 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.

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PRIUS_OM_OM47B54U_(U)
4-3. Operating the lights and wipers
■12-volt battery-saving function
In order to prevent the 12-volt battery of the vehicle from discharging, if the
headlights and/or tail lights are on when the power switch is 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 Ma lfunction Visit Your Dealer” is displayed on the
multi-information display
The system may be malfunctioning. Have the vehicle inspected by your Toy-
ota dealer.
■ Customization
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features: →P. 748)
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is
off.

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PRIUS_OM_OM47B54U_(U)
4-3. Operating the lights and wipers
4
Driving
Automatic High Beam∗
Push the lever away from you
with the headlight switch in the or position.
Press the Automatic High
Beam switch.
The Automatic High Beam indica-
tor will come on when the head-
lights are turned on automatically
to indicate that the system is
active.
∗: If equipped
The Automatic High Beam uses an in-vehicle camera sensor to
assess the brightness of streetlights, the lights of vehicles
ahead etc., and automatically turns the high beam on or off as
necessary.
WARNING
■ Limitations of the Automatic High Beam
Do not rely on the Automatic High Beam. Always drive safely, taking care to
observe your surroundings and turning the high beam on or off manually if
necessary.
■ To prevent incorrect operation of the Automatic High Beam system
Do not overload the vehicle.
Activating the Automatic High Beam system
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PRIUS_OM_OM47B54U_(U)
2494-3. Operating the lights and wipers
4
Driving
■High beam automatic turning on or off conditions
●When all of the following conditions are fulfilled, the high beam will be auto-
matically turned on (after approximately 1 second):
• Vehicle speed is above approximately 21 mph (34 km/h).
• The area ahead of the vehicle is dark.
• There are no vehicles ahead with headlights or tail lights turned on.
• There are few streetlights on the road ahead.
● If any of the following conditions are fulfilled, the high beam will be automat-
ically turned off:
• Vehicle speed drops below approximately 17 mph (27 km/h).
• The area ahead of the vehicle is not dark.
• Vehicles ahead have headlights or tail lights turned on.
• There are many streetlights on the road ahead.
■ Camera sensor detection information
●The high beam may not be automatically turned off in the following situa-
tions:
• When oncoming vehicles 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 vehicles have no lights
● The high beam may be turned off if a vehicle ahead that is using fog lights
without using the headlights is detected.
● House lights, street lights, traffic signals, and illuminated billboards or signs
may cause the high beam to switch to the low beams, or the low beams to
remain on.
● The following factors may affect the amount of time taken to turn the high
beam on or off:
• The brightness of headlights, fog lights, and tail lights of vehicles ahe\
ad
• 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 high beam may be turned on or off when the driver does not expect it.
● Bicycles or similar objects may not be detected.

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PRIUS_OM_OM47B54U_(U)
4-3. Operating the lights and wipers
●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.
• When driving through an area of in termittently 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.

PRIUS_OM_OM47B54U_(U)
2514-3. Operating the lights and wipers
4
Driving
■Temporarily lowering sensor sensitivity
The sensitivity of the sensor can be temporarily lowered.
Turn the power switch off while the following conditions are met.
• The headlight switch is in or .
• The headlight switch lever is in high beam position.
• Automatic High Beam switch is on.
Turn the power switch to ON mode.
Within 30 seconds after , repeat pulling the headlight switch lever to the
original position then pushing it to the high beam position quickly 10 times,
then leave the lever in high beam position.
If the sensitivity is changed, the Automatic High Beam indicator is turn on
and off 3 times.
Automatic High Beam (headlights) may turn on even the vehicle is stopped.
■ If “Headlight System Ma lfunction Visit Your Dealer” is displayed on the
multi-information display
The system may be malfunctioning. Have the vehicle inspected by your Toy-
ota dealer.
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