light Lexus IS200t 2017 s Repair Manual

2194-3. Operating the lights and wipers
4
Driving
IS200t_EE(OM53D77E)
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.
■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 engine is started with the headlight
switch off or in the “AUTO” position an d the parking brake is released. (Illuminate
brighter than the front position lights.) Daytime running lights are not designed for use at
night.
■Headlight control sensor
■Automatic light off system
●When the light switch is in the or position: The headlights turn off auto-
matically if the engine switch is turned to ACCESSORY mode or off.
●When the light switch is in the position: The headlights and all lights turn off auto-
matically if the engine switch is turned to ACCESSORY mode or off.
To turn the lights on again, turn the engine switch to IGNITION ON mode, or turn the
light switch to the
position once and then back to the or position.
Follow me home system
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.

2204-3. Operating the lights and wipers
IS200t_EE(OM53D77E)
■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 ad justed according 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.
■Customization
Settings (e.g. light sensor se nsitivity) can be changed.
(Customizable features: P. 646)
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than necessary when the engine is not running.

2214-3. Operating the lights and wipers
4
Driving
IS200t_EE(OM53D77E)
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 system is operating.
Automatic High Beam

: If equipped
The Automatic High Beam uses a came ra sensor located behind the upper
portion of the windshield to assess the brightness of the lights of vehicles
ahead, streetlights, etc., and automatically turns the high beams on or off as
necessary.
WARNING
■Limitations of the Automatic High Beam
Do not overly rely on the Automatic High Beam. Always drive safely, taking care to
observe your surroundings and turning the high beams 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
1
2

2224-3. Operating the lights and wipers
IS200t_EE(OM53D77E)
■Switching to the low beams
Pull the lever to its 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 the high beams
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.
Turning the high beams on/off manually

2234-3. Operating the lights and wipers
4
Driving
IS200t_EE(OM53D77E)
■Conditions to turn the high beams on/off automatically
●When all of the following conditions are met, the high beams will be turned on automat-
ically (after approximately 1 second):
• The vehicle speed is approximately 40 km/h (25 mph) or more.
• 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 is met, the high beams will turn off automatically:
• The vehicle speed is below approximately 30 km/h (19 mph).
• The area ahead of the vehicle is not dark.
• Vehicles ahead have their headli ghts or tail lights turned on.
• There are many streetlights on the road ahead.
■Camera sensor detection information
●The high beams may not be automatically turned off in the following situations:
• When a vehicle suddenly appears from around a curve
• When the vehicle is cut in front of by another vehicle
• When vehicles ahead cannot be detected due to repeated curves, road dividers or roadside trees
• When vehicles ahead appear in a faraway lane on a wide road
• When the lights of vehicles ahead are not on
●The high beams may be turned off if a vehicl e ahead that is using fog lights without its
headlights turned on is detected.
●House lights, street lights, traffic signals, and illuminated billboards or signs and other
reflective objects may cause the high beams to change to the low beams, or the low
beams to remain on.
●The following factors may affect the amount of time taken for the high beams to turn on
or off:
• The brightness of the 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 in the vehicle
●The high beams may turn on or off unexpectedly.

2244-3. Operating the lights and wipers
IS200t_EE(OM53D77E)
●Bicycles or similar vehicles may not be detected.
●In the following situations the system may not be able to correctly detect the surround-
ing brightness level. This may cause the low beams to remain on or the high beams to
flash or dazzle pedestrians or vehicles ahead. In such a case, it is necessary to manually
switch between the high and low beams.
• When driving in inclement weather (heavy rain, snow, fog, sandstorms, etc.)
• When the windshield is obscured by fog, mist, ice, dirt, etc.
• When the windshield is cracked or damaged
• When the camera sensor is deformed or dirty
• When the temperature of the camera sensor is extremely high
• When the surrounding brightness level is equa l to that of headlights, tail lights or fog
lights
• When headlights or tail lights of vehicles ah ead are turned off, dirty, changing color,
or not aimed properly
• When the vehicle is hit by water, snow, dust, etc. from a preceding vehicle
• When driving through an area of interm ittently 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 roads, etc.)
• When frequently and repeatedly taking curves or driving on a winding road
• When there is a highly reflective object ahead of the vehicle, such as a sign or mirror
• When the back of a preceding vehicle is highly reflective, such as a container on a truck
• When the vehicle's headlights are damaged or dirty, or are not aimed properly
• When the vehicle is listing or titling due to a flat tire, a trailer being towed, etc.
• When the headlights are changed between the high beams and low beams repeat- edly in an abnormal manner
• When the driver believes that the high beams may be flashing or dazzling pedestri-
ans or other drivers
• When the vehicle is used in an area in which vehicles travel on the opposite side of
the road of the country for which the vehicle was designed, for example using a vehi-
cle designed for right-hand traffic in a left-hand traffic area, or vice versa

2254-3. Operating the lights and wipers
4
Driving
IS200t_EE(OM53D77E)
Turns the rear fog light on
Releasing the switch ring returns it to.
Operating the switch ring again turns
the rear fog light off.
■Fog light can be used when
The headlights or the front position lights are turned on.
Fog light switch
The fog light secure excellent visibility in difficult driving conditions, such as in
rain and fog.

2264-3. Operating the lights and wipers
IS200t_EE(OM53D77E)
Operate the lever as follows to operate the wipers. The lever will return to its
original position immediately after operation.
Intermittent windshield wipers with interval adjusterMove the lever up by 2 levels
Move the lever up by 1 level
Move the lever down by 1 level
Move the lever down by 2 lev-
els
Windshield wipers and washer
Operating the wiper lever
1
2
3
4
OffTemporary operationTemporaryoperationIntermittent operationHigh speedoperation
Intermittent operationOffOffLow speedoperationHigh speed operation
Low speed
operationOffIntermittent operationHigh speedoperationHigh speed operation
High speed operationOffLow speedoperationNo changeNo change
Status
before
operation
Operation

2274-3. Operating the lights and wipers
4
Driving
IS200t_EE(OM53D77E)
Wiper intervals can be adjusted when intermittent operation is selected.Increases the intermittent windshield
wiper frequency
Decreases the intermittent wind-
shield wiper frequency
The intermittent windshield wiper oper-
ates more frequently as vehicle speed
becomes higher.
Washer/wiper dual operation
The wipers will automatically operate a
couple of times after the washer squirts.
When the engine switch is in IGNI-
TION ON mode and the headlights are
on, if the lever is pulled, the headlight
cleaners will operate once. After this,
the headlight cleaners will operate
every 5th time the lever is pulled.
5
6
7

2284-3. Operating the lights and wipers
IS200t_EE(OM53D77E)
Rain-sensing windshield wipersMove the lever up by 2 levels
Move the lever up by 1 level
Move the lever down by 1 level
Move the lever down by 2 lev-
els
AUTO mode on/off switch
With AUTO mode selected, the wipers
will operate automatically when the sen-
sor detects falling rain. The system auto-
matically adjusts wiper timing in
accordance with rain volume and vehi-
cle speed.
The 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.
AUTO mode
indicator
1
2
3
4
5
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