2018 Lexus LC500 sensor

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4-3. Operating the lights and wipers
■Door opening linked windshield wiper stop function
When AUTO is selected and the wind- shield wipers are operating, if a door is opened, the operation of the windshield
wipers will be stopped to prevent anyone near the vehicle from being sprayed by water from the wipers, provided the vehicle
is stopped. When the door is closed, wiper operation will resume.
■To protect the windshield wipers
If movement of the windshield wipers is largely restricted by a foreign object such as snow, the operation of the windshield wip-
ers may be stopped automatically to pro- tect the windshield wipers. In this case, turn the windshield wiper switch off and remove
the foreign object, and then use the wind- shield wipers.
■When stopping the engine tem> in an emergency while driving
If the windshield wipe rs are operating when
the engine is stopped, the windshield wipers will operate in high speed operation. After the vehicle is stopped,
operation will return to normal when the engine switch is turned to IGNITION ON mode , or
operation will stop when the driver’s door is opened.
■Customization
The rain-sensing operation setting can be changed. (Customizable features: P.423)
When the windshield wipers are not
being used, they retract to below the
hood. To enable the windshield wipers
to be lifted when parking in cold condi-
tions or when replacing a windshield
wiper insert, change th e rest position of
the windshield wipers to the service
WARNING
■Caution regarding the use of wind- shield wipers in AUTO mode
The windshield wipers may operate unexpectedly if the sensor is touched or the windshield is subject to vibration in
AU TO mod e . T ak e c are t ha t you r fin ge rs or anything else do not become caught in the windshield wipers.
■Caution regarding the use of washer
fluid
When it is cold, do not use the washer
fluid until the windshield becomes warm. The fluid may freeze on the windshield and cause low visibility. This may lead to
an accident, resulting in death or serious injury.
NOTICE
■When there is no washer fluid spray from the nozzle
Damage to the washer fluid pump may be caused if the lever is pulled toward
you and held continually.
■When a nozzle becomes blocked
In this case, contact any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer. Do not try to clear it with a pin or other
object. The nozzle will be damaged.
Changing the windshield wiper
rest position/Lifting the wind-
shield wipers

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4-5. Using the driving support systems
• With the consent of the vehicle owner or
with the consent of the lessee if the vehi-
cle is leased
• In response to an official request by the
police, a court of law or a government
agency
• For use by Lexus in a lawsuit
• For research purposes where the data is
not tied to a specific vehicle or vehicle
owner
Two types of sensors, located behind
the front grille and windshield, detect
information necessary to operate the
drive assist systems.
Radar sensor
Camera sensor
Sensors
A
B

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4-5. Using the driving support systems
WARNING
■To avoid malfunction of the radar sen- sor
Observe the following precautions.
Otherwise, the radar sensor may not
operate properly, possibly leading to an accident resulting in death or serious injury.
●Keep the radar sensor and front grille
emblem clean at all times.
Radar sensor
Front grille emblem
If the front of the radar sensor or the front
or back of the front grille emblem is dirty
or covered with water droplets, snow,
etc., clean it.
Clean the radar sensor and front grille
emblem with a soft cloth so you do not
mark or damage them.
●Do not attach accessories, stickers
(including transparent stickers), or other items to the radar sensor, front grille emblem or surrounding area.
●Do not subject the radar sensor or sur-
rounding area to a strong impact. If the radar sensor, front grille, or front bumper has been subjected to a
strong impact, have the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer,
or any reliable repairer.
●Do not disassemble the radar sensor.
A
B
●Do not modify or paint the radar sen- sor, front grille emblem or surrounding
area.
●If the radar sensor, front grille, or front bumper needs to be removed and installed, or replaced, contact any
authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
■To avoid malfunction of the camera
sensor
Observe the following precautions.
Otherwise, the camera sensor may not operate properly, possibly leading to an
accident resulting in death or serious injury.
●Keep the windshield clean at all times.
• If the windshield is dirty or covered with an oily film, water droplets, snow, etc., clear the windshield.
• If a glass coating agent is applied to the windshield, it will still be necessary to
use the windshield wipers to remove water droplets, etc. from the area of
the windshield in front of the camera sensor.
• If the inner side of the windshield where the camera sensor is installed is dirty, contact any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer.
●Do not install an antenna or attach stickers (including transparent stick-
ers) or other items to the area of the windshield in front of the camera sen-sor (shaded area in the illustration).

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4-5. Using the driving support systems
Driving
WARNING
●If the part of the windshield in front of the camera sensor is fogged up or covered with condensation or ice, use
the windshield defogger to remove the fog, condensation or ice. ( P.281)
●If water droplets cannot be properly removed from the area of the wind-
shield in front of the camera sensor by the windshield wipers, replace the wiper insert or wiper blade.
If the wiper inserts or wiper blades need to be replaced, contact any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
●Do not attach window tinting to the windshield.
●Replace the windshield if it is damaged
or cracked. If the windshield needs to be replaced, contact any authorized Lexus retailer
or Lexus authorized repairer, or any reliable repairer.
●Do not get the camera sensor wet.
●Do not allow bright lights to shine into the camera sensor.
●Do not dirty or damage the camera
sensor. When cleaning the inside of the wind-shield, do not allow glass cleaner to
contact the lens. Also, do not touch the lens. If the lens is dirty or damaged, contact
any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
●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 sen-
sor.
●Do not install an electronic device or device that emits strong electric waves
near the camera sensor.
●Do not modify any components of the vehicle 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 authorized Lexus retailer
or Lexus authorized repairer, or any reliable repairer 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 sen- sor.
●Do not modify the headlights or other lights.

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4-5. Using the driving support systems
*: If equipped
■Pre-collision warning
When the system determines that the
possibility of a frontal collision is high, a
buzzer will sound and a warning mes-
sage will be displayed on the multi-
information display to urge the driver
to take evasive action.
■Pre-collision brake assist
When the system determines that the
possibility of a frontal collision is high,
the system applies greater braking
force in relation to how strongly the
brake pedal is depressed.
■Pre-collision braking
When the system determines that the
possibility of a frontal collision is high,
the system warns the driver. If the sys-
tem determines that the possibility of a
frontal collision is extremely high, the
brakes are automatically applied to
help avoid the collision or reduce the
collision speed.
■Suspension control
When the system determines that the
possibility of a frontal collision is high,
the Adaptive Variable Suspension sys-
tem ( P.262) will control the damping
force of the shock absorbers to help
maintain an appropriate vehicle pos-
ture.
■Steering control (if equipped)
When the system determines that the
possibility of a frontal collision is high
PCS (Pre-Collision System)*
The pre-collision system uses a
radar sensor and camera sensor to
detect vehicles and pedestrians*1 in
front of your vehicle. When the sys-
tem determines that the possibility
of a frontal collision with a vehicle
or pedestrian is high, a warning
operates to urge the driver to take
evasive action and the potential
brake pressure is increased to help
the driver avoid the collision. If the
system determines that the possi-
bility of a frontal collision with a
vehicle or pedestrian is extremely
high, the brakes are automatically
applied to help avoid the collision or
help reduce the impact of the colli-
sion.
The pre-collision system can be dis-
abled/enabled and the warning tim-
ing can be changed. ( P.212)
*1: Depending on the region in which
the vehicle was sold, the pedestrian
detection function may not be avail-
able. Contact any authorized Lexus
retailer or Lexus authorized repairer,
or any reliable repairer for details.
System functions

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4-5. Using the driving support systems
■Enabling/disabling the pre-colli-
sion system
The pre-collision system can be
enabled/disabled on ( P.92) of
the multi-information display.
The system is automatically enabled each
time the engine switch is
turned to IGNITION ON mode mode>.
If the system is disabled, the PCS warn-
ing light will turn on and a message will
be displayed on the multi-information
display.
■Changing the pre-collision warn-
ing timing
The pre-collision warning timing can
be changed on ( P.92) of the
multi-information display.
The operation timing setting is retained
when the engine switch is
turned off.
1 Far
The warning will begin to operate earlier
than with the default timing.
WARNING
●When inspecting the vehicle using a drum tester such as a chassis dyna-mometer or speedo meter tester, or
when using an on vehicle wheel bal- ancer
●When a strong impact is applied to the front bumper or front grille, due to an
accident or other reasons
●If the vehicle cannot be driven in a sta- ble manner, such as when the vehicle has been in an accident or is malfunc-
tioning
●When the vehicle is driven in a sporty manner or off-road
●When the tires are not properly inflated
●When the tires are very worn
●When tires of a size other than speci-
fied are installed
●When tire chains are installed
●When a compact spare tire or an emergency tire puncture repair kit is used
●If equipment (snow plow, etc.) that may
obstruct the radar sensor or camera sensor is temporarily installed to the vehicle
Changing settings of the pre-col-
lision safety system

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4-5. Using the driving support systems
Driving
object by the roadside at the entrance of a curve
• When driving on a narrow path sur- rounded by a structure, such as in a tun-nel or on an iron bridge
• When there is a metal object (manhole cover, steel plate, etc.), steps, or a protru-sion on the road surface or roadside
• When a crossing pedestrian approaches
very close to the vehicle*2
• When passing through a place with a low structure above the road (low ceiling,
traffic sign, etc.)
• When passing under an object (billboard,
etc.) at the top of an uphill road
• When rapidly closing on an electric toll gate barrier, parking area barrier, or other barrier that opens and closes
• When using an automatic car wash • When driving through or under objects that may contact the vehicle, such as thick
grass, tree branches, or a banner
• When the vehicle is hit by water, snow,
dust, etc. from a vehicle ahead • When driving through steam or smoke• When there are patterns or paint on the
road or a wall that may be mistaken for a
vehicle or pedestrian*2
• When driving near an object that reflects radio waves, such as a large truck or guardrail
• When driving near a TV tower, broad- casting station, electric power plant, or other location where strong radio waves
or electrical noise may be present*2: Depending on the region in which the
vehicle was sold, the pedestrian detec-
tion function may not be available.
■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 bicy-

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4-5. Using the driving support systems
cle • 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 preceding vehicle has a low rear end,
such as a low bed trailer
• If a vehicle ahead is carrying a load which
protrudes past its rear bumper • If a vehicle ahead has extremely high ground clearance
• If a vehicle ahead is irregularly shaped, such as a tractor or side car
• If the sun or other light is shining 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
maneuver (such as sudden swerving, acceleration or deceleration)• When suddenly cutting behind a preced-
ing vehicle • When a vehicle ahead is not directly in front of your vehicle
• When driving in inclement weather 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 sur-
rounding 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• After the engine has
started the vehicle has not been driven for a certain amount of time• While making a left/right turn and for a
few seconds after maki ng a left/right turn • While driving on a curve and for a few seconds after driving on a curve
• If your vehicle is skidding • If the front of the vehicle is raised or low-ered
• If the wheels are misaligned
• If a wiper blade is blocking the camera sensor• The vehicle is wobbling.
• The vehicle is being driven at extremely high speeds.• When driving on a hill
• If the radar sensor or camera sensor is misaligned
●In some situations such as the following, sufficient braking force may not be obtained, preventing the system from
performing properly: • If the braking functions cannot operate to their full extent, such as when the brake
parts are extremely cold, extremely hot, or wet• If the vehicle is not properly maintained
(brakes or tires are excessively worn,