headlight Lexus GS300 2018 s User Guide

GS350_300_GS F_OM_OM30G34U_(U)
2174-3. Operating the lights and wipers
4
Driving
AFS (Adaptive Front-lighting System) secures excellent visibility at intersections
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 con-
trolled by steering input.
AFS operates at speeds of 6 mph (10 km/h) or higher.
■Deactivating AFS
Settings can be changed from on the multi-information display
(→ P. 100).
Press or on the meter cont rol switch and select “AFS”.
Press on the meter control
switch and select “Off”.
The indicator turns on when the AFS
is deactivated.
■Daytime running light system
●The daytime running lights illuminate using th e same lights as the parking lights and illu-
minate brighter than the parking lights.
●To make your vehicle more visible to other drivers during daytime driving, the daytime
running lights turn on automatically when a ll of the following conditions are met. (The
daytime running lights are not designed for use at night.)
• The engine is running
• The parking brake is released
• The headlight switch is in the (Canada only), or “AUTO”
* position
*: When the surroundings are bright
The daytime running lights remain on after they illuminate, even if the parking brake is set
again.
●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.
AFS (Adaptive Front-lighting System) (if equipped)
1
2

218
GS350_300_GS F_OM_OM30G34U_(U)4-3. Operating the lights and wipers
■Headlight control sensor
■Automatic light off system
●When the headlights are on: The headlights and tail lights turn off 30 seconds after the
engine switch is turned off and a door is
opened and all of the doors and trunk are
closed. (The lights turn off immediately if on the key is pressed twice after all the
doors are closed.)
●When only the tail lights are on : The tail lights turn off automatically if the engine switch
is turned off and the driver’s door is opened.
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 min-
utes.
■Light reminder buzzer
A buzzer sounds when the engine switch is turned off or turned to ACCESSORY 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 accordi ng to the number of passen-
gers and the loading condition of the vehicle to ensure that the headlights do not inter-
fere with other road users.
■If the “AFS OFF” indicator flashes
It may indicate a malfun ction in the system. Contact your Lexus dealer.
■Customization
Settings (e.g. light sensor se nsitivity) can be changed.
(Customizable features: →P. 545)
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 system to malfunction.
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than ne cessary when the engine is not running.

219
GS350_300_GS F_OM_OM30G34U_(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 indicator will
come on when the headlights are turned
on automatically to indicate that the sys-
tem 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. Al ways drive safely, taking care to observe
your surroundings and turning the high be am 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
1
2

220
GS350_300_GS F_OM_OM30G34U_(U)4-3. Operating the lights and wipers
■Switching to low beam
Pull the lever to the original position.
The Automatic High Beam indicator
will turn off.
Push the lever away from you to acti-
vate the Automatic High Beam sys-
tem again.
■Switching to high beam
Press the Automatic High Beam
switch.
The Automatic High Beam indicator
will turn off and the high beam indi-
cator will turn on.
Press the switch to activate the Auto-
matic High Beam system again.
■High beam automatic turning on or off conditions
●When all of the following conditions are fulf
illed, the high beam will be automatically
turned on:
• Vehicle speed is above appr oximately 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 fulfille d, high beam will be automatically turned off:
• Vehicle speed drops below approximately 17 mph (27 km/h).
• 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.
Turning the high beam on/off manually

GS350_300_GS F_OM_OM30G34U_(U)
2214-3. Operating the lights and wipers
4
Driving
■Camera sensor detection information
●The 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 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 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 ahead
• The movement and direction of vehicles ahead
• When vehicle ahead only has op erational lights on one side
• When vehicle ahead is a two-wheeled vehicle
• The condition of the road (gradient, cu rve, 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.
●In the situations shown below, the system may not be able to accurately detect sur-
rounding brightness levels. This may cause the low beams to remain on or the high
beams to cause problems for pedestrians, ve hicles 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 th ose 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 intermittently changing brightness and darkness.
• When frequently and repeated ly 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 re flective, such as a container on a truck.
• The vehicle’s headlights are damaged or dirty, or are not aimed properly.
• The vehicle is listing or tilting, due to a flat tire, a trailer being towed etc.
• The high beam and low beam are repeated ly being switched between in an abnor-
mal manner.
• The driver believes that the high beam may be causing problems or distress to other drivers or pedestrians nearby.

222
GS350_300_GS F_OM_OM30G34U_(U)4-3. Operating the lights and wipers
■Temporarily lowering sensor sensitivity
The sensitivity of the sensor
can be temporarily lowered.
Turn the engine 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 engine switch to IGNITION ON mode.
Within 30 seconds after , repeat pulling th e 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 (head lights) may turn on even the vehicle is stopped.
■Warning message
Warning messages are used to indicate a syst em malfunction or to inform the driver of
the need for caution. ( →P. 441)
1
2
32
4

224
GS350_300_GS F_OM_OM30G34U_(U)4-3. Operating the lights and wipers
Wiper intervals can be adjusted when
intermittent operation is selected.
Increases the intermittent windshield
wiper frequency
Decreases the intermittent wind-
shield wiper frequency
Washer/wiper dual operation
Wipers will automatically operate a cou-
ple of times after the washer squirts.
Vehicles with headlight cleaners:
When the headlights are on and the
lever is pulled and held, the headlight
cleaners will operate once. After this,
the headlight cleaners will operate
every 5th time the lever is pulled.
Rain-sensing windshield wipers

(U.S.A.) or (Canada)
Move the lever up 2 levels
Move the lever up 1 level

(U.S.A.) or (Canada)
Move the lever down 1 level

(U.S.A.) or (Canada)
Move the lever down 2 levels
AUTO mode on/off switch
5
6
7
AUTO mode
indicator
1
2
3
4
5

GS350_300_GS F_OM_OM30G34U_(U)
2254-3. Operating the lights and wipers
4
Driving
With AUTO mode 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.
AUTO mode indicator will turn on when AUTO mode is selected.
*1: After temporary operation, the mode will return to AUTO mode.
*2: AUTO mode will be canceled.
When AUTO mode is selected, the sensor sensitivity can be adjusted by turning
the switch ring.
Increases the sensitivity
Decreases the sensitivity
Washer/wiper dual operation
Wipers will automatically operate a cou-
ple of times after the washer squirts.
Vehicles with headlight cleaners:
When the headlights are on and the
lever is pulled and held, the headlight
cleaners will operate once. After this,
the headlight cleaners will operate
every 5th time the lever is pulled.
or or
or
OffTemporary operationTemporary operationLow speedoperationHigh speed operation
Low speed operationOffOffHigh speed operationHigh speed operation
High speed
operationOffLow speedoperationNo changeNo change
AUTO modeIntermittent operation
Off
Temporary
operation
*1Low speed
operation
*2High speed
operation
*2
ContinuouslyNo change
Operation
Status
before
operation
6
7
8

246
GS350_300_GS F_OM_OM30G34U_(U)4-5. Using the driving support systems
■Situations in which the system may not operate properly
●In some situations such as the following, a vehicle may not be detected by the radar
sensor and camera sensor, preventing
the system from operating properly:
• If an oncoming vehicle is approaching your vehicle
• If a vehicle ahead is a motorcycle or bicycle
• When approaching the side or front of a vehicle
• If a preceding vehicle has a small rear end, such as an unloaded truck
• If a vehicle ahead is carrying a load which protrudes past its rear bumper
• If a vehicle ahead is irregularly shap ed, such as a tractor or side car
• If the sun or other light is shin ing directly on a vehicle ahead
• If a vehicle cuts in front of your ve hicle or emerges from beside a vehicle
• If a vehicle ahead makes an abrupt maneuver (such as sudden swerving, accelera-
tion or deceleration)
• When suddenly cutting behind a preceding vehicle
• When driving in inclement we ather such as heavy rain, fog, snow or a sandstorm
• When the vehicle is hit by water, sn ow, dust, etc. from a vehicle ahead
• When driving through steam or smoke
• When driving in a place where the surrounding brightness changes suddenly, such as at the entrance or exit of a tunnel
• When a very bright light, such as the sun or the headlights of on coming traffic, shines
directly into the camera sensor
• When the surrounding area is dim, such as at dawn or dusk, or while at night or in a tunnel
• If a preceding vehicle has a low rear end,
such as a low bed trailer
• If a vehicle ahead has extremely high ground clearance
• When a vehicle ahead is not directly in front of your vehicle

252
GS350_300_GS F_OM_OM30G34U_(U)4-5. Using the driving support systems
WARNING
■Before using LKA system
Do not rely solely upon the LKA system. Th
e LKA system does not automatically drive
the vehicle or reduce the amount of attention that must be paid to the area in front of
the vehicle. The driver must always assume full responsibility for driving safely by pay-
ing careful attention to the surrounding cond itions and operating the steering wheel to
correct the path of the vehicle. Also, the driver must take adequate breaks when
fatigued, such as from driving for a long period of time.
Failure to perform appropriate driving operat ions and pay careful attention may lead to
an accident, resulting in death or serious injury.
■To avoid operating LKA system by mistake
When not using the LKA system, use the LKA switch to turn the system off.
■Situations unsuitable for LKA system
Do not use the LKA system in the following situations.
The system may not operate properly and lead to an accident, resulting in death or
serious injury.
●A spare tire, tire chains, etc. are equipped.
●When the tires have been excessively worn, or when the tire inflation pressure is low.
●Tires which differ by structure, manufacturer, brand or tread pattern are used.
●Objects or patterns that could be mistaken for white (yellow) lines are present on the
side of the road (guardrails, cu rbs, reflective poles, etc.).
●Vehicle is driven on a snow-covered road.
●White (yellow) lines are difficult to see due to rain, snow, fog, dust, etc.
●Asphalt repair marks, white (yellow) line marks, etc. are present due to road repair.
●Vehicle is driven in a temporary lane or restricted lane due to construction work.
●Vehicle is driven on a road surface which is slippery due to rainy weather, fallen snow,
freezing, etc.
●Vehicle is driven in traffic lanes ot her than on highways and freeways.
●Vehicle is driven in a construction zone.
■Preventing LKA system malfunctions and operations perf ormed by mistake
●Do not modify the headlights or place stickers, etc. on the surface of the lights.
●Do not modify the suspension etc. If the suspension etc. needs to be replaced, con-
tact your Lexus dealer.
●Do not install or place anything on the hood or grille. Also, do not install a grille guard
(bull bars, kangaroo bar, etc.).
●If your windshield needs repair s, contact your Lexus dealer.