2015 LEXUS RC F engine

2074-2. Driving procedures
4
Driving
RC350/RCF_U (OM24636U)
■The ASC system can be operated when
The driving mode select switch is in SPORT S+ mode. (P. 2 7 8 )
ASC (Active Sound Control) (RC F)
: If equipped
The ASC system sonically emphasizes the vehicle’s response to the driver’s
operation of the accelerator pedal and shift lever or paddle shift switches. The
dynamic engine sound enabled by this system helps the driver further enjoy
the feeling of unity with the vehicle, particularly when driving in M mode.
( P. 202)

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RC350/RCF_U (OM24636U)4-3. Operating the lights and wipers
Turning the end of the lever turns on the lights as follows:
Headlight switch
The headlights can be operated manually or automatically.
Operating instructions
U.S.A. Canada
The side marker, tail, license
plate and instrument panel
lights turn on.
The headlights and all lights
listed above turn on.
The headlights, daytime run-
ning lights and all the lights
listed above turn on and off
automatically.
(When the engine switch is in
IGNITION ON mode.)
Off
The daytime running lights
turn on.1
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3
4
(U.S.A.)
(Canada)

2094-3. Operating the lights and wipers
4
Driving
RC350/RCF_U (OM24636U)
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.
■Daytime running light system
●To make your vehicle more visible to other drivers, the parking lights turn on automati-
cally (at an increased intensity) whenever the engine is started and the parking brake is
released. Daytime running lights ar e not designed for use at night.
●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.
●Vehicles with LED front turn signal lights: If a turn signal light is in use, the daytime run-
ning light, on the same side, is turned off. For emergency flashers, both are turned off.
■Headlight control sensor
■Automatic light off system
When the light switch is in , or : The headlights and tail lights turn off 30
seconds 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 closed. (The lights turn off immediately
if on the key is pressed twice after both side 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.
Turning on the high beam headlights
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2
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.

2104-3. Operating the lights and wipers
RC350/RCF_U (OM24636U)
■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.
■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.
■Operation guide display (vehicles with rain-sensing windshield wipers only)
When the headlight switch is operated to and from the “AUTO” position, the current sta-
tus is displayed on the meters for a few seconds to show that AUTO mode is activated/
deactivated. ( P. 1 0 8 , 1 1 9 )
■Customization
Settings (e.g. light sensor se nsitivity) can be changed.
(Customizable features: P. 6 3 5 )
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than ne cessary when the engine is not running.

2134-3. Operating the lights and wipers
4
Driving
RC350/RCF_U (OM24636U)
■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 tu rned off in the following situations:
• When oncoming vehicles sudd enly appear from a curve
• When the vehicle is cut in front of by another vehicle
• 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 an oncoming or preceding vehicle only has operational lights on one side
• When an 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.
●Small vehicles, such as bicy cles, may not be detected.
●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. There-
fore, you should consider turning the high be ams 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 camera sensor is deformed or dirty.
• Surrounding brightness levels are equal to those of headlights, tail lights or fog lights.
• Vehicles ahead have headlights or tail lights that are either switched off, dirty, chang-
ing color, or have improperly adjusted aim.
• When driving through an area of intermit tently 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 repeat edly 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 distress to other
drivers or pedestrians nearby.

2144-3. Operating the lights and wipers
RC350/RCF_U (OM24636U)
■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 5 seconds after , repeat pulling the headlight switch lever to the original
position then pushing it to the high beam position quickly 9 times, then leave the lever
in high beam position.
Automatic High Beam (headlights) may turn on even the vehicle is stopped.
WA R N I N G
■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.
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2184-3. Operating the lights and wipers
RC350/RCF_U (OM24636U)
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
The wipers will automatically operate a
couple of times after the washer squirts.
Vehicles with headlight cleaners: When
the engine switch is in IGNITION ON
mode and the headlights are on, if the
lever is pulled, the headlight cleaners
will operate once. After this, the head-
light cleaners will operate every 5th
time the lever is pulled.
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2204-3. Operating the lights and wipers
RC350/RCF_U (OM24636U)
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
The wipers will automatically operate a
couple of times after the washer squirts.
Vehicles with headlight cleaners: When
the engine switch is in IGNITION ON
mode and the headlights are on, if the
lever is pulled, the headlight cleaners
will operate once. After this, the head-
light cleaners will operate every 5th
time the lever is pulled.
The wipers can be used as intermittent windshield wipers, which operate regard-
less of vehicle speed or amount of rain drops. The intermittent windshield wiper
operation can be switched when the vehicl e is stopped and the wiper is off. The
wiper operation cannot be switched during AUTO mode or while the intermit-
tent windshield wipers are operating.
Press and hold until the AUTO
mode indicator stops flashing.
If is pressed and held until the
AUTO mode indicator stops flashing
again, it will return to its previous state.
The wiper can be switched when the
vehicle is stopped and the wipers are off.
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7
8
Switching between the intermittent wi ndshield wipers and rain-sensing
windshield wipers (vehicles with rain-sensing windshield wipers)