headlight Lexus HS250h 2012 User Guide

193
2-3. Operating the lights and windshield wipers
2
When driving
HS250h_U_75050U
Turning on the high beam headlightsWith the headlights on, push the
lever away from you to turn on
the high beams.
When the light switch is in
position, the Automatic High Beam
system will be activated. (→P. 1 9 6 )
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.
AFS (Adaptive Front-lighting System) (if equipped)
AFS (Adaptive Front-lighting System) secures excellent visibility at inter-
sections and on curves by automatically adjusting the direction of the
light axis of the headlights according to vehicle speed and the degree of
the tire’s angle as controlled by steering input.
AFS operates at speeds of 6 mph (10 km/h) or higher.
■ Deactivating AFS
Press the menu switch.
The multi-information display will
change modes to electronic fea-
ture control mode.
Press the “ENTER” switch
upwards or downwards until
AFS appears.

194
2-3. Operating the lights and windshield wipers
HS250h_U_75050UPress the “ENTER” switch to
change to OFF.
The “AFS OFF” indicator will come
on.
Each pressing of the switch turns
AFS on and off.
Press the menu switch to change to
the normal display.
■Daytime running light system
●To make your vehicle more visible to other drivers, the headlights turn on auto-
matically (at a reduced intensity) whenever the hybrid system is started and the
parking brake is released. 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 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
The sensor may not function properly if an
object is placed on the sensor, or anything
that blocks the sensor is affixed to the wind-
shield.
Doing so interferes with the sensor detecting
the level of ambient light and may cause the
automatic headlight system to malfunction.

195
2-3. Operating the lights and windshield wipers
2
When driving
HS250h_U_75050U
■Automatic light off system
●When the headlights come on: The headlights and tail lights turn off 30 seconds
after a door is opened and closed if the “POWER” switch is turned to ACCES-
SORY 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 the light
switch off once and then back to or .
■Automatic headlight leveling system (if equipped)
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.
■ If the “AFS OFF” indicator flashes (if equipped)
It may indicate a malfunction in the system. Contact your Lexus dealer.
■Customization
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features →P. 5 8 4 )
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is off.

196
2-3. Operating the lights and windshield wipers
HS250h_U_75050U
Automatic High Beam∗∗
: If equipped
The Automatic High Beam uses an in-vehicle camera sensor to assess the
brightness of streetlights, the lights of oncoming and preceding vehicles,
etc., and automatically turns high beam on or off as necessary.
■ Activating the Automatic High Beam system
Turn the headlight switch to the position.
Push the lever away from you.
The Automatic High Beam indi-
cator will come on when the
headlights are turned on auto-
matically to indicate that the sys-
tem is active.

198
2-3. Operating the lights and windshield wipers
HS250h_U_75050U
■The Automatic High Beam can be operated when
The “POWER” switch is ON mode.
■Camera sensor detection information
●High beam may not be automatically turned off in the following situations:
• When oncoming vehicles suddenly appear from a curve.
• When the vehicle is cut in front of by another.
●High beam may be turned off if an oncoming vehicle that is using fog lights with-
out using the headlights is detected.
●House lights, street lights, red traffic signals, and illuminated billboards or signs
may cause the high beam to turn off.
■High beam automatic turn ing on or off conditions
When all of the following conditions are fulfilled, high beam will be
automatically turned on (after approximately 1 second):
● Vehicle speed is above approximately 20 mph (32 km/h).
● The area ahead of the vehicle is dark.
● There are no oncoming or preceding vehicles with headlights or
tail lights turned on.
If any of the following conditions are fulfilled, high beam will be auto-
matically turned off:
● Vehicle speed drops below approximately 20 mph (32 km/h).
● The area ahead of the vehicle is not dark.
● Oncoming or preceding vehicles have headlights or tail lights
turned on.

199
2-3. Operating the lights and windshield wipers
2
When driving
HS250h_U_75050U
●The following factors may affect the amount of time taken to turn high beam on
or off:
• The brightness of headlights, fog lights, and tail lights of oncoming and pre-ceding vehicles
• Road conditions (wetness, ice, snow etc.)
• The number of passengers and amount of baggage
●High beam may be turned on or off when unexpected by the driver.
●In the situations below, the system may not be able to correctly detect the sur-
rounding brightness levels, and may flash or expose nearby pedestrians to the
high beam. Therefore, you should consider turning the high beams on or off
manually rather than relying on the Automatic High Beam System.
• 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 inside rear view mirror or camera sensor is deformed or dirty.
• 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 chang-
ing color, or have are not aimed properly.
• 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 mir- ror.
• 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 Automatic High Beam indicator is flashing.
• 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 distress to other drivers or pedestrians nearby.

201
2-3. Operating the lights and windshield wipers
2
When driving
HS250h_U_75050U
NOTICE
■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 high beam on or off manually if necessary.
■Notes when using the Automatic High Beam system
●Do not touch the camera sensor.
●Do not subject the inside rear view mirror or the camera sensor to a strong
impact.
●Do not disassemble the camera sensor.
●Do not spill liquid onto the inside rear view mirror or the camera sensor.
●Do not apply window tinting or stickers to the camera sensor or the area of wind-
shield near the camera sensor.
●Do not place items on the dashboard. There is a possibility that the camera sensor
will mistake items reflected in the windshield for streetlights, the headlights of
other vehicles, etc.
●Do not install a parking tag or any other accessories near or around the inside
rear view mirror and the camera sensor.
●Do not overload the vehicle.
●Do not modify the vehicle.
●Do not replace windshield with non-genuine windshield.
Contact your Lexus dealer.
Observe the following to ensure that the
Automatic High Beam functions correctly.

203
2-3. Operating the lights and windshield wipers
2
When driving
HS250h_U_75050U
■Fog lights can be used when
The headlights are on in low beam.
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is off.
Type BTurns the front fog
lights off
Turns the front fog
lights on

205
2-3. Operating the lights and windshield wipers
2
When driving
HS250h_U_75050U
Washer/wiper dual operation
The wipers will automatically
operate a couple of times after
the washer squirts.
If the headlights are on, the
headlight cleaners will operate
once. (→P. 211)
Type B
Intermittent wind-
shield wiper operation
Low speed windshield
wiper operation
High speed wind-
shield wiper operation
Temporary operation
Increases the intermittent
windshield wiper frequency
Decreases the intermittent
windshield wiper frequency

206
2-3. Operating the lights and windshield wipers
HS250h_U_75050U
Washer/wiper dual operation
The wipers will automatically
operate a couple of times after
the washer squirts.
If the headlights are on, the
headlight cleaners will operate
once. (→P. 211)
Rain-sensing windshield wipers (if equipped)
When is selected, the wipers will operate automatically when
the sensor detects falling rain. The system automatically adjusts wiper
timing in accordance with rain volume and vehicle speed.
When is selected, the sensor sensitivity can be adjusted as fol-
lows by turning the switch ring:
Type A
Rain-sensing wiper
operation
Low speed wiper
operation
High speed wiper
operation
Temporary operation