headlight Lexus GS250 2012 User Guide

2284-3. Operating the lights and wipers
GS350/250_EE (OM30C36E)
Headlight switch
Turning the end of the lever turns on the lights as follows:
The front position, tail,
license plate and instru-
ment panel lights turn on.
The headlights and all
lights listed above turn
on.
The headlights, daytime
running lights and all the
lights listed above turn on
and off automatically.
(When the engine switch
is in IGNITION ON
mode.)
The daytime running
lights turn on.
The headlights can be operated manually or automatically.
Operating instructions
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2
3
4

2294-3. Operating the lights and wipers
4
Driving
GS350/250_EE (OM30C36E)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.
This system allows the headlights and front position lights to be
turned on for 30 seconds when the engine switch is off.
Pull the lever toward you and
release it with the light switch is
in or after turning the
engine switch off.
Pull the lever toward you and
release it again to turn off the
lights.
Turning on the high beam headlights
1
2
Follow me home system

2304-3. Operating the lights and wipers
GS350/250_EE (OM30C36E)AFS (Adaptive Front-lighting System) secures excellent visibility
at intersections and on curves by automatically adjusting the direc-
tion 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 10 km/h (6 mph) or higher.
Deactivating AFS
Turn on the AFS OFF switch.
The indicator turns on when the
AFS is deactivated.
AFS (Adaptive Front-lighting System) (if equipped)

2314-3. Operating the lights and wipers
4
Driving
GS350/250_EE (OM30C36E)
Daytime running light system
To make your vehicle more visible to other drivers, the front position lights
turn on automatically whenever the engine is started and the parking brake is
released. Daytime running lights are not designed for use at night.
Headlight control sensor
Automatic light off system
When the light switch is in : The headlights turn off automatically if the
engine switch is turned to ACCESSORY mode or turned off.
When the light switch is in : The headlights and all lights turn off auto-
matically if the engine switch is turned to ACCESSORY mode or turned
off.
To turn the lights on again, turn the engine switch to IGNITION ON mode,
or turn the light switch off once and then back to or .
If any of the doors or trunk lid is kept open, the lights automatically turn off
after 20 minutes.
Light reminder buzzer
A buzzer sounds when the engine switch is turned off or turned to ACCES-
SORY mode and the driver’s door is opened while the lights are turned on.
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. The sensor may not function properly if
an object is placed on the sensor, or any-
thing 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 system
to malfunction.

233
4 4-3. Operating the lights and wipers
Driving
GS350/250_EE (OM30C36E)
Automatic High Beam
Push the lever away from you
with the headlight switch in
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 oncoming and
preceding vehicles, etc., and automatically turns high beam on or
off as necessary.
Activating the Automatic High Beam system
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2

2344-3. Operating the lights and wipers
GS350/250_EE (OM30C36E)When all of the following conditions are fulfilled, high beam will
be automatically turned on (after approximately 1 second):
Vehicle speed is above approximately 40 km/h (25 mph).
The area ahead of the vehicle is dark.
There are no oncoming or preceding vehicles with headlights or
tail lights turned on.
There are few streetlights on the road ahead.
If any of the following conditions are fulfilled, high beam will be
automatically turned off:
Vehicle speed drops below approximately 30 km/h (19 mph).
The area ahead of the vehicle is not dark.
Oncoming or preceding vehicles have headlights or tail lights
turned on.
There are many streetlights on the road ahead.
High beam automatic turning on or off conditions

2364-3. Operating the lights and wipers
GS350/250_EE (OM30C36E)
The Automatic High Beam can be operated when
The engine switch is in IGNITION 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
• When oncoming or preceding vehicles are hidden from sight due to
repeated curves, road dividers or roadside trees
High beam may be turned off if an oncoming vehicle that is using fog lights
without 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.
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
preceding vehicles
• The movement and direction of oncoming and preceding vehicles
• When a oncoming or preceding vehicle only has operational lights on
one side
• When a oncoming or preceding vehicle 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
High beam may be turned on or off when unexpected by the driver.

2374-3. Operating the lights and wipers
4
Driving
GS350/250_EE (OM30C36E)
In the situations below, the system may not be able to correctly detect the
surrounding 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
changing 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 mirror.
• The vehicle’s headlights are damaged or dirty.
• The vehicle is listing or titling, due to a flat tire, a trailer being towed etc.
• The driver believes that the high beam may be causing problems or dis-
tress to other drivers or pedestrians nearby.
CAUTION
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.

2384-3. Operating the lights and wipers
GS350/250_EE (OM30C36E)
NOTICE
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
windshield 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 any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
Observe the following to ensure that the
Automatic High Beam functions cor-
rectly.

2404-3. Operating the lights and wipers
GS350/250_EE (OM30C36E)
Fog lights can be used when
Vehicles with a front and rear fog light switch
Front fog lights: The headlights or the front position lights are turned on.
Rear fog light: The front fog lights are turned on.
Vehicles with a rear fog light switch
The headlights or the front position lights are turned on.