light LEXUS RC F 2017 Repair Manual

2124-2. Driving procedures
NOTICE
■To prevent battery discharge
●Do not leave the engine switch in ACCESSORY or IGNITION ON mode for long
periods of time without the engine running.
●RC350/RC300/RC200t: If “ACCESSORY” or “IGNITION ON” is displayed on
the meters while the engine is not running, the engine switch is not off. Exit the vehicle
after turning the engine switch off.
●RC F: If the analog speedometer is illu minated and the engine is not running, the
engine switch is not off. Exit the vehicle after turning the engine switch off.
However, if the welcome illumination is operating, the analog speedometer will be
illuminated even though the engine sw itch is off. (Welcome illumination: →P. 107)
●Do not stop the engine when the shift lever is in a position other than P. If the engine is
stopped in another shift lever position, the engine switch will not be turned off but
instead be turned to ACCESSORY mode. If the vehicle is left in ACCESSORY
mode, battery discharge may occur.
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start or stalls frequently, have your vehicle checked
by your Lexus dealer immediately.
■Symptoms indicating a malfun ction with the engine switch
If the engine switch seems to be operating somewhat differen tly than usual, such as the
switch sticking slightly, ther e may be a malfunction. Contact your Lexus dealer immedi-
ately.

2204-2. Driving procedures
The lever will return to its original position immediately after operation.Right turn
Lane change to the right (move the
lever partway and release it)
The right hand signals will flash 3 times.
Lane change to the left (move the
lever partway and release it)
The left hand signals will flash 3 times.
Left turn
■If the turn signals do not stop flashing af ter turning left or right, or if you want
to stop them flashing
Operate the lever in the opposite direct ion to either position or . If you
move the lever to either position or , the selected turn signals will flash.
■Turn signals can be operated when
The engine switch is in IGNITION ON mode.
■If the indicator flashes faster than usual
Check that a light bulb in the front or rear turn signal lights has not burned out.
■If the turn signals stop flashing befo re a lane change has been performed
Operate the lever again.
■Customization
The number of times the turn signals flas h during a lane change can be changed.
(Customizable feature →P. 673)
Turn signal lever
Operating instructions
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4
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14

2244-3. 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 (→ P. 225) 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. ( →P. 225)1
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3
4
(U.S.A.)
(Canada)

2254-3. Operating the lights and wipers
4
Driving
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 during daytime driving, the daytime
running lights turn on automatically whenever the engine is started and the parking
brake is released with the he adlight switch off (for Canada ) or in the “AUTO” position.
(Illuminate brighter than the parking lights.) Daytime runnin g lights are 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 trun k are closed. (The lights turn off immediately
if on the key is pr essed 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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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.

2264-3. Operating the lights and wipers
■Automatic headlight leveling system
The level of the headlights is automatically adjusted 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.
■Customization
Settings (e.g. light sensor se nsitivity) can be changed.
(Customizable features: →P. 673)
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than ne cessary when the engine is not running.

2274-3. Operating the lights and wipers
4
Driving
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.
Automatic High Beam∗
∗
: 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 the high beam on or off as necessary.
Activating the Automatic High Beam system
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2284-3. Operating the lights and wipers
When all of the following conditions are met, the high beam will be automatically
turned on (after approximately 1 second):
●Vehicle speed is above approximately 21 mph (34 km/h).
●The area ahead of the vehicle is dark.
●There are no oncoming or preceding ve hicles with headlights or tail lights
turned on.
●There are few streetlights on the road ahead.
If any of the following conditions are me t, the 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.
■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
Turning the high beam on/off manually

2294-3. Operating the lights and wipers
4
Driving
■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 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 sign als, 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 prec eding 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, cu rve, condition of the road surface etc.)
• The number of passengers and amount of luggage
●High beam may be turned on or of f when unexpected by the driver.
●Small vehicles, such as bicycles, may not be detected.
●In the situations below, the system may not be able to correctly detect the surrounding
brightness levels, and may flas h or expose nearby pedestrians to the high beam. There-
fore, 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 camera sensor is deformed or dirty.
• Surrounding brightness levels are equal to th ose 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 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 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.

2304-3. 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 5 seconds after , repeat pulling th e headlight switch lever to the original
position then pushing it to the high beam po sition quickly 9 times, then leave the lever
in high beam position.
Automatic High Beam (head lights) may turn on even the vehicle is stopped.
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 high beam on or off manually if necessary.
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2314-3. Operating the lights and wipers
4
Driving
NOTICE
■Notes when using the Automatic High Beam system
Observe the following to ensure that the Automatic High Beam functions correctly.
●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 vehi-
cles, etc.
●Do not install a parking tag or any other acc essories near or around the camera sen-
sor.
●Do not overload the vehicle.
●Do not modify the vehicle.
●If the windshield needs to be re placed, contact your Lexus dealer.
●Do not touch the camera sensor.
●Do not subject the camera sensor to a strong
impact.
●Do not disassemble the camera sensor.
●Do not spill liquid onto the camera sensor.
●Do not apply window tinting or stickers to the
camera sensor or the area of windshield near
the camera sensor.