2020 TOYOTA PRIUS PLUG-IN HYBRID light

3885-3. Operating the lights and wipers
Prius Plug-in Hybrid_OM_OM47D72E_(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
the 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
position. Daytime running lights are not designed for use at night.
■ Headlight control sensor
Follow me home system
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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.

3895-3. Operating the lights and wipers
Prius Plug-in Hybrid_OM_OM47D72E_(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
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 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 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. 782)

3905-3. Operating the lights and wipers
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is
off.

3915-3. Operating the lights and wipers
Prius Plug-in Hybrid_OM_OM47D72E_(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 front camera 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.

3925-3. Operating the lights and wipers
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Push the lever away from you
with the headlight switch in the
or position.
Press the Adaptive High-beam
System switch.
The Adaptive High-beam System
indicator will come on when the
headlights are turned on automati-
cally to indicate that the system is
active.
Activating the Adaptive High-beam System
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1
2

3935-3. Operating the lights and wipers
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
5
Driving
■Switching to low beam
Pull the lever to the original
position.
The Adaptive High-beam Sys-
tem indicator will turn off.
Push the lever away from you to
activate the Adaptive High-
beam System again.
■Switching to high beam
Press the Adaptive High-beam
System switch.
The Adaptive High-beam Sys-
tem indicator will turn off and the
high beam indicator will turn on.
Press the switch to activate the
Adaptive High-beam System
again.
Turning the high beam on/off manually
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3945-3. Operating the lights and wipers
Prius Plug-in Hybrid_OM_OM47D72E_(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.
■Front camera 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.

3955-3. Operating the lights and wipers
Prius Plug-in Hybrid_OM_OM47D72E_(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 front camera is deformed or dirty.
• The front camera 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.