headlights LEXUS RX200T 2017 User Guide

2734-3. Operating the lights and wipers
4
Driving
RX350/RX200t_EE_OM48F32E
●Bicycles or similar objects 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 withrough, 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 tilting 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
■Customization
Some functions can be customized. ( P. 740)

2764-3. Operating the lights and wipers
RX350/RX200t_EE_OM48F32E
■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 orroadside 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.
●Bicycles or similar vehicles may not be detected.

2774-3. Operating the lights and wipers
4
Driving
RX350/RX200t_EE_OM48F32E
●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 atruck
• 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

2784-3. Operating the lights and wipers
RX350/RX200t_EE_OM48F32E
Turns the front and rear fog
lights off
Turns the front fog lights on
Turns both front and rear fog
lights on
Releasing the switch ring returns it to
.
Operating the switch ring again turns only the rear fog lights off.
■Fog lights can be used when
Front fog lights: The headlights or fr ont position lights are turned on. Rear fog lights: The front fog lights are turned on.
Fog light switch
The fog lights secure excellent visibility in difficult driving conditions, such as
in rain and fog.
Operating instructions
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2804-3. Operating the lights and wipers
RX350/RX200t_EE_OM48F32E
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 IGNI-
TION ON mode and the headlights are on, if the lever is pulled, the headlightcleaners will operate once. After this,
the headlight cleaners will operate every 5th time the lever is pulled.
Rain-sensing windshield wipers
When “AUTO” is 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.
The sensor sensitivity can be adjusted when “AUTO” is selected.
Off
Rain-sensing operation
Low speed operation
High speed operation
Temporary operation
Increases the sensitivity
Decreases the sensitivity
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2814-3. Operating the lights and wipers
4
Driving
RX350/RX200t_EE_OM48F32E
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 IGNI-
TION ON mode and the headlights are on, if the lever is pulled, the headlightcleaners will operate once. After this,
the headlight cleaners will operate every 5th time the lever is pulled.
■The windshield wipers and washer can be operated when
The engine switch is in IGNITION ON mode.
■Dripping prevention wiper sweep (vehicles with rain-sensing windshield wipers)
After washing and wiping operation severa l times, the wipers operate one more time after a short delay to prevent dripping. However, this function will not operate while driv- ing.
■Effects of vehicle speed on wiper operation
Vehicle speed affects the Intermittent wiper interval.
■Raindrop sensor (vehicles with rain-sensing windshield wipers)
●If the wiper switch is turned to the “AUTO” position while the engine switch is in IGNI-
TION ON mode, the wipers will operate on ce to show that AUTO mode is activated.
●When the sensor sensitivity ring is turned toward high while in “AUTO” position, the wipers will operate once to indicate th at the sensor sensitivity is enhanced.
●If the temperature of the raindrop sensor is 90C (194F) or higher, or -15C (5F) or lower, automatic operation may not occur. In this case, operate the wipers in any modeother than AUTO mode.
■If no windshield washer fluid sprays
Check that the washer nozzles are not blocked, if there is washer fluid in the washer fluid tank.
■Washer nozzle heaters (if equipped)
The washer nozzle heaters operate when the outside temperature is 5°C (41°F) or less
and the engine switch is in IGNITION ON mode.
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●The raindrop sensor judges the amount of raindrops.
An optical sensor is adopted. It may not oper- ate properly when sunlight from the rising orsetting of the sun intermittently strikes the
windshield, or if bugs, etc. are present on the windshield.

2964-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
WARNING
●Do not subject the camera sensor to a strong impact.
●Do not change the installation position or direction of the camera sensor or remove it.
●Do not disassemble the camera sensor.
●Do not install an electronic device or device that emits strong electric waves near the camera sensor.
●Do not modify any components of the vehicl e around the camera sensor (inside rear
view mirror, etc.) or ceiling.
●Do not attach any accessories that may obstruct the camera sensor to the hood, front grille or front bumper. Contact any authoriz ed Lexus dealer or repairer, or another
duly qualified and equipped professional for details.
●If a surfboard or other long object is to be mounted on the roof, make sure that it will not obstruct the camera sensor.
●Do not modify the headlights or other lights.

3104-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
■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 sh aped, 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 vehicle or emerges from beside a vehicle• If a vehicle ahead makes an abrupt mane uver (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, snow, dust, etc. from a vehicle ahead
• When driving through steam or smoke • When driving in a place where the surro unding 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 oncoming 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

3174-5. Using the driving support systems
4
Driving
RX350/RX200t_EE_OM48F32E
WARNING
■Before using LKA system
Do not rely solely upon the LKA system. LKA is not a system which automatically drives the vehicle or reduces 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 always paying careful attention to the surrounding conditions and operate the steer-ing wheel to correct the path of the vehicle. Also, make sure to take adequate breaks
when fatigued, such as from driv ing 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 by mistake
When not using the LKA system, use the LKA switch to turn the system off.
■Situations unsuitable for LKA
Do not use the LKA system in the following situations. The system may not operate properly and le ad 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 other than on highways and freeways.
●Vehicle is driven in a construction zone.
●When your vehicle is towing a trailer or during emergency towing
■Preventing LKA system malfunctions and operations performed by mistake
●Do not modify the headlights or place stic kers, etc., on the surface of the lights.
●Do not modify the suspension etc. If the suspension etc. needs to be replaced, con- tact any authorized Lexus dealer or repair er, or another duly qualified and equipped
professional.
●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 repairs, contact any authorized Lexus dealer or repairer, oranother duly qualified an d equipped professional.

3224-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
■Conditions in which functions may not operate properly
In the following situations, the camera sensor may not detect white (yellow) lines and var- ious functions may not operate normally.
●There are shadows on the road that run paralle l with, or cover, the white (yellow) lines.
●The vehicle is driven in an area without white (yellow) lines, such as in front of a tollgate or checkpoint, or at an intersection, etc.
●The white (yellow) lines are cracked, “Raised pavement marker” or stones are present.
●The white (yellow) lines cannot be seen or are difficult to see due to sand, etc.
●The vehicle is driven on a road surface that is wet due to rain, puddles, etc.
●The traffic lines are yellow (which may be more difficult to recognize than lines that are white).
●The white (yellow) lines cross over a curb, etc.
●The vehicle is driven on a bright surface, such as concrete.
●The vehicle is driven on a surface that is bright due to reflected light, etc.
●The vehicle is driven in an area where the brightness changes suddenly, such as at the
entrances and exits of tunnels, etc.
●Light from the headlights of an oncoming ve hicle, the sun, etc., enters the camera.
●The vehicle is driven where the road diverges, merges, etc.
●The vehicle is driven on a slope.
●The vehicle is driven on a road which tilts left or right, or a winding road.
●The vehicle is driven on an unpaved or rough road.
●The vehicle is driven around a sharp curve.
●The traffic lane is excessively narrow or wide.
●The vehicle is extremely tilted due to carrying heavy luggage or having improper tire pressure.
●The distance to the preceding vehicle is extremely short.
●The vehicle is moving up and down a large a mount due to road conditions during driv- ing (poor roads or road seams).
●The headlight lenses are dirty and emit a faint amount of light at night, or the beam axis
has deviated.
●The vehicle is struck by a crosswind.
●The vehicle has just changed lanes or crossed an intersection.
●Snow tires, etc., are equipped.