2010 Lexus HS250h headlights

188
2-3. Operating the lights and windshield wipers
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 ar
e turned on auto -
matically to indicate that the sys -
tem is active.

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2-3. Operating the lights and windshield wipers
■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 sign als, and illuminated billboards or signs
may cause the high beam to turn off.
■ High beam automatic turning on or off conditions
When all of the following conditio ns are fulfilled, high beam will be
automatically turned on (after approximately 1 second):
● V
ehicle speed is above approximately 20 mph (32 km/h).
●The ar
ea ahead of the vehicle is dark.
●Ther
e are no oncoming or preced ing vehicles with headlights or
tail lights turned on.
If any of the following conditions ar
e fulfilled, high beam will be auto-
matically turned off:
● V
ehicle speed drops below approximately 20 mph (32 km/h).
●The ar
ea ahead of the vehicle is not dark.
●Oncoming or pr
eceding vehicles have headlights or tail lights
turned on.

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2-3. Operating the lights and windshield wipers
2
When driving
●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 leve ls 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 inte rmittently 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 repe atedly 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.

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2-3. Operating the lights and windshield wipers
2
When driving
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 wi th non-genuine windshield.
Contact your Lexus dealer.
Observe the following to ensure that the
Automatic High Beam functions correctly.

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2-3. Operating the lights and windshield wipers
Fog light switch
■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.
The fog lights secure excellent visibility in difficult driving conditions, such
as in rain and fog.
Turns the front fog
lights off
Turns the front fog
lights on

196
2-3. Operating the lights and windshield wipers
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. 2 0 0 )
Rain-sensing windshield wipers (if equipped)
When is selected, the wipers will oper
ate automatically when
the sensor detects falling rain. Th e s
ystem automatically adjusts wiper
timing in accordance with rain volume and vehicle speed.
When is selected, the sensor sensit ivity can be adjusted as fol-
lows by turning the switch ring:
Rain-sensing wiper
operation
Low speed wiper
operation
High speed wiper
operation
Temporary operation

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2-3. Operating the lights and windshield wipers
2
When driving
■The windshield wipers and wa sher can be operated when
The “POWER” switch is in ON mode.
■Effects of vehicle speed on wiper operation (vehicles with rain-sensing wind -
shield wipers)
Even when the wipers are not in AUTO mode, wiper operation varies depending
on v
ehicle speed when the washer is being used (delay until drip prevention wiper
sweep occurs).
Increases the sensitivity
Decreases the sensitivity
Washer/wiper dual operation
The wipers will automatically
operate a couple of times after
the washer squirts. 
(After operating several times,
the wiper
s operate one more
time after a short delay to pre -
vent dripping.)
If the headlights are on, the
headlight
cleaners will operate
once. ( P. 2 0 0 )

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2-3. Operating the lights and windshield wipers
Headlight cleaner switch
: If equipped
■The headlight cleaners can be operated when
The “POWER” switch is in ON mode an d the
headlight switch is turned on.
■Windshield washer linked operation
●When the windshield washer is operated with the “POWER” switch in ON
mode and the headlights on, the he adlight cleaners will operate once. 
(  P. 1 9 5 )
●From the second time the windshield wa sher is operated, the headlight cleaner
will not operate in sync with the windshield washer. 
(Turning the “POWER” switch to OFF or the lo
w beam headlights off resets the
headlight cleaner synchronization mode.)
NOTICE
■When the washer fluid tank is empty
Do not press the switch continually as the washer fluid pump may overheat.
Washer fluid can be sprayed on the headlights.
Press the switch to clean the
headlights.