2018 Lexus IS350 Owner's Manual / LEXUS 2018 IS300,IS350 OWNER'S MANUAL (OM53E34U)

1934-2. Driving procedures
4
Driving
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Louder
Lower
When the dial is turned to the lowest
volume, driving sound will be turned off
and the indicator will go off.
■ASC is enabled when
The vehicle is being driven in normal mode or sport mode. ( →P. 288)
■Situations that may disable the ASC system
The ASC system may be disabled depending on the driving conditions, such as when the
tires slip due to sudden acceleration.
ASC (Active Sound Control)∗
∗
: If equipped
The ASC system is an electronic sound system that generates driving sound,
conveying the kinetic situations of the vehicle’s acceleration and deceleration
to the driver through the speakers behi nd the instrument panel. The vehicle’s
response to the driver’s acceleration behavior and shift operations are also
conveyed in sound. When sport mode is selected, the sound conveyed to the
driver will be louder.
Controlling volume
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2

194
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
4-3. Operating the lights and wipers
Headlight switch
The headlights can be operated
manually or automatically.
Operating instructions
(U.S.A.) (Canada)
Turning the end of the lever turns on
the lights as follows:
The side marker, parking, tail,
license plate, instrument panel
lights, and daytime running
lights(→P. 196) turn on.
The headlights and all lights
listed above (except daytime
running lights) turn on.
The headlights, parking lights,
daytime running lights ( →P.
196) and all the lights listed
above turn on and off auto-
matically.

(When the engine switch is in
IGNITION ON mode.)
Off
The daytime running lights
turn on. ( →P. 196)
1
2
3
4
(U.S.A.)
(Canada)

1954-3. Operating the lights and wipers
4
Driving
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
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.
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. 86).
The indicator turns on when the AFS
is deactivated.
Turning on the high beam headlights
1
2
AFS (Adaptive Front-lighting System) (if equipped)

1964-3. Operating the lights and wipers
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■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
* 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.
■Headlight control sensor
■Automatic light off system
When the light switch is in , or : Th e headlights and tail lights turn off 30 sec-
onds after the engine switch is turned to ACCESSORY mode or turned off and a door is
opened and all of the doors and trunk are cl osed. (The lights turn off immediately if
on the key is pressed twice af ter all the doors are closed.)
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 left open , the lights automatically turn off after 20 min-
utes.
■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. 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.

1974-3. Operating the lights and wipers
4
Driving
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■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.
■Customization
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features: →P. 611)
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than ne cessary when the engine is not running.

1984-3. Operating the lights and wipers
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
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
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 automatica lly 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 hi gh 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

1994-3. Operating the lights and wipers
4
Driving
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■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

2004-3. Operating the lights and wipers
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■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 21 mph (34 km/h) 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 condit ions is met, the high beams will turn off automatically:
• The vehicle speed is below ap proximately 17 mph (27 km/h).
• The area ahead of the vehicle is not dark.
• Vehicles ahead have th eir headlights 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 du e 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, cu rve, 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.