2018 Lexus LC500 brake sensor

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4-5. Using the driving support systems
Driving
selected by using the paddle shift switch.
●Vehicle speed is at or above approxi-
mately 50 km/h (30 mph). However, when a preceding vehicle is detected, the dynamic radar cruise con-
trol with full-speed range can be set even if the vehicle speed is below approxi-mately 50 km/h (30 mph).
■Accelerating after setting the vehicle
speed
The vehicle can accelerate by operating the
accelerator pedal. After accelerating, the set speed resumes. Ho wever, during vehi- cle-to-vehicle distance control mode, the
vehicle speed may decrease below the set speed in order to maintain the distance to the preceding vehicle.
■When the vehicle stops while follow-up
cruising
●Pressing the +/RES switch while the vehi-
cle ahead stops will resume follow-up cruising if the vehicle ahead starts off within approximately 3 seconds after the
switch is pressed.
●If the vehicle ahead starts off within 3 sec-
onds after your vehicle stops, follow-up cruising will be resumed.
■Automatic cancelation of vehicle-to-
vehicle distance control mode
Vehicle-to-vehicle distance control mode is
automatically canceled in the following situ- ations.
●Actual vehicle speed falls below approxi-mately 40 km/h (25 mph) when there are no vehicles ahead.
●The preceding vehicle leaves the lane when your vehicle is following at a vehicle
speed below approximately 40 km/h (25 mph). Otherwise, the sensor can not properly detect the vehicle. (“CRUISE
NOT AVAILABLE No Preceding Vehi- cles” is displayed on the multi-information display.)
●VSC is activated.
●TRC is activated for a period of time.
●When the VSC or TRC system is turned
off.
●When snow mode is set.
●The sensor cannot detect correctly
because it is covered in some way.
●Pre-collision brakin g is activated.
●The parking brake is operated.
●The vehicle is stopped by system control on a steep incline.
●The following are detected when the vehicle has been stopped by system con-trol:
• The driver is not wearing a seat belt. • The driver’s door is opened.• The vehicle has been stopped for about 3
minutes
If vehicle-to-vehicle distance control mode
is automatically canceled for any other rea-
son, there may be a malfunction in the sys-
tem. Contact any authorized Lexus retailer
or Lexus authorized repairer, or any reliable
repairer.
■Automatic cancelation of constant speed control mode
Constant speed control mode is automati- cally canceled in the following situations:
●Actual vehicle speed is more than
approximately 16 km/h (10 mph) below the set vehicle speed.
●Actual vehicle speed falls below approxi-mately 40 km/h (25 mph).
●VSC is activated.
●TRC is activated for a period of time.
●When the VSC or TRC system is turned off.
●Pre-collision brakin g is activated.
If constant speed control mode is automati-
cally canceled for any other reason, there
may be a malfunction in the system. Con-
tact any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
■If “Radar Cruise Control Unavailable” is
shown on the multi-information display
The radar cruise control system cannot be
used temporarily. Use the system when it

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4-5. Using the driving support systems
becomes available again.
■Warning messages and buzzers for dynamic radar cruise control with full-speed range
Warning messages and buzzers are used to indicate a system malfun ction or to inform
the driver of the need for caution while driv- ing. If a warning mess age is shown on the multi-information display, read the message
and follow the instructions.
■When the sensor may not be correctly detecting the vehicle ahead
In the case of the following and depending on the conditions, operate the brake pedal when deceleration of the system is insuffi-
cient or operate the accelerator pedal when acceleration is required.
As the sensor may not be able to correctly detect these types of vehicles, the approach warning ( P.235) may not be activated.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving in the same
lane
●Vehicles with small rear ends (trailers with no load on board, etc.)
●Motorcycles traveling in the same lane
●When water or snow thrown up by the
surrounding vehicles hinders the detect- ing of the sensor
●When your vehicle is pointing upwards (caused by a heavy load in the luggage compartment, etc.)
●Preceding vehicle has an extremely high ground clearance
■Conditions under which the vehicle-to-vehicle distance control mode may not function correctly
In the case of the following conditions, operate the brake pedal (or accelerator
pedal, depending on the situation) as nec- essary.
As the sensor may not be able to correctly detect vehicles ahead, the system may not operate properly.
●When the road curves or when the lanes
are narrow
●When steering wheel operation or your
position in the lane is unstable

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4-5. Using the driving support systems
Driving
• When the Lexus parking assist-sensor is turned off once and turned on again• When the engine switch
is turned off once and turned to IGNI- TION ON mode again
■If “Clean Parking Assist Sensor” is dis-played on the multi-information display
A sensor may be dirty or covered with snow or ice. In such cases, if it is removed from
the sensor, the system should return to nor- mal.
Also, due to the sensor being frozen at low temperatures, a malfunction display may appear or an obstacle may not be detected.
If the sensor thaws out, the system should return to normal.
■If “Parking Assist Malfunction” or “Park-ing Assist Malfunction Visit Your
Dealer” is displayed on the multi-infor- mation display
There is a malfunction and the device may not be working properly.
Have the vehicle inspected by any autho- rized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
■Sensor detection information
●The sensor’s detection areas are limited
to the areas around the vehicle’s front and rear bumpers.
●Certain vehicle conditions and the sur-rounding environment may affect the ability of the sensor to correctly detect
obstacles. Particular instances where this may occur are listed below.• There is dirt, snow or ice on the sensor.
(Wiping the sensors will resolve this problem.)• The sensor is frozen. (Thawing the area
will resolve this problem.)
In especially cold weather, if a sensor is fro-
zen the screen may show an abnormal dis-
play, or obstacles may not be detected.
• The sensor is covered in any way.
• The vehicle is leaning considerably to one side.• On an extremely bumpy road, on an
incline, on grav el, or on grass. • The vicinity of the vehicle is noisy due to
vehicle horns, motorcycle engines, air brakes of large vehicles, or other loud noises producing ultrasonic waves.
• There is another vehicle equipped with parking assist sensor in the vicinity.• The sensor is splashed with water or
heavy rain. • The vehicle is equipped with a fender pole or wireless antenna.
• Towing eyelets are installed. • The bumper or sensor receives a strong impact.
• The vehicle is approaching a tall or curved curb.• In harsh sunlight or intense cold weather.
• The area directly under the bumpers is not detected.• If obstacles draw too close to the sensor.
• A non-genuine Lexus suspension (low- ered suspension etc.) is installed.• People may not be detected if they are
wearing certain types of clothing.
In addition to the examples above, there are
instances in which, because of their shape,
signs and other objects may be judged by
the sensor to be closer than they are.
●The shape of the obstacle may prevent the sensor from detecting it. Pay particu-
lar attention to the following obstacles: • Wires, fences, ropes, etc.• Cotton, snow and other materials that
absorb sound waves • Sharply-angled objects•Low obstacles
• Tall obstacles with upper sections pro- jecting outwards in the direction of your vehicle
●The following situations may occur during use.
• Depending on the shape of the obstacle and other factors, the detection distance may shorten, or detection may be impos-
sible. • Obstacles may not be detected if they are too close to the sensor.
• There will be a short delay between obstacle detection and display. Even at slow speeds, there is a possibility that the
obstacle will come within the sensor’s detection areas before the display is shown and the warning beep sounds.

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4-5. Using the driving support systems
• Thin posts or objects lower than the sen- sor may not be detected when approached, even if they have been
detected once. • It might be difficult to hear beeps due to the volume of the audio system or air flow
noise of the air conditioning system. • It might be difficult to hear beeps due to the sounds of other systems.
■Customization
Some functions can be customized. ( P.423)
■Detection range of the sensors
Approximately 100 cm (3.3 ft.)
WARNING
■When using the Lexus parking assist- sensor
Observe the following precautions.
Failing to do so may result in the vehicle being unable to be driven safely and pos-sibly cause an accident.
●Do not use the sensor at speeds in
excess of 10 km/h (6 mph).
●The sensors’ detection areas and reac- tion times are limited. When moving forward or reversing, check the areas
surrounding the vehicle (especially the sides of the vehicle) for safety, and drive slowly, using the brake to control
the vehicle’s speed.
●Do not install accessories within the sensors’ detection areas.
NOTICE
■When using Lexus parking assist-sen-sor
In the following situations, the system may not function correctly due to a sen-
sor malfunction etc. Have the vehicle checked by any authorized Lexus retailer or Lexus authorized repairer, or any reli-
able repairer.
●The Lexus parking assist-sensor oper- ation display flashes or shows continu-
ously, and a beep sounds when no obstacles are detected.
●If the area around a sensor collides with something, or is subjected to
strong impact.
●If the bumper or grille collides with something.
●If the display flashes or shows continu-ously without beeping, except when
the mute function has been turned on.
●If a display error occurs, first check the sensor. If the error occurs even when there is
no ice, snow or mud on the sensor, it is likely that the sensor is malfunctioning.
■Notes when washing the vehicle
Do not apply intensive bursts of water or steam to the sensor area.
Doing so may result in the sensor mal- functioning.
Sensor detection display, obsta-
cle distance
A

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4-5. Using the driving support systems
■ECB (Electronically Controlled
Brake System)
The electronically controlled system
generates braking force correspond-
ing to the brake operation
■ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the
brakes are applied suddenly, or if the
brakes are applied while driving on a
slippery road surface
■Brake assist
Generates an increased level of brak-
ing force after the brake pedal is
depressed when the system detects a
panic stop situation
■VSC (Vehicle Stability Control)
Helps the driver to control skidding
when swerving suddenly or turning on
slippery road surfaces
■Secondary Collision Brake (if
equipped)
When the airbag sensor detects a colli-
sion, the brakes and brake lights are
automatically controlled to reduce the
vehicle speed and that helps reduce
the possibility of further damage due to
a secondary collision.
■TRC (Traction Control)
Helps to maintain drive power and pre-
vent the drive wheels from spinning
when starting the vehicle or accelerat-
ing on slippery roads
■Hill-start assist control
Helps to reduce the backward move-
ment of the vehicle when starting on an
uphill
■VGRS (Variable Gear Ratio Steer-
ing) (if equipped)
Adjusts the front wheel turning angle in
accordance with the vehicle speed and
steering wheel movement
■DRS (Dynamic Rear Steering) (if
equipped)
Contributes to the turning characteris-
tics and responsiveness of the vehicle
by slightly adjusting the rear wheel
angle of the vehicle in accordance with
steering wheel movement.
■EPS (Electric Power Steering)
Employs an electric motor to reduce
the amount of effort needed to turn the
steering wheel
■AVS (Adaptive Variable Suspen-
sion System)
By independently controlling the
damping force of the shock absorbers
for each of the 4 wheels according to
Driving assist systems
To keep driving safety and perfor-
mance, the following systems oper-
ate automatically in response to
various driving situations. Be aware,
however, that these systems are
supplementary and should not be
relied upon too heavily when oper-
ating the vehicle.
Summary of the driving assist
systems

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4-5. Using the driving support systems
Driving
■EPS, VGRS and DRS operation sound
When the steering wheel is operated, a
motor sound (whirring sound) may be heard. This does not indicate a malfunction.
■Automatic reactivation of TRC and VSC systems
After turning the TRC and VSC systems off, the systems will be automatically re-
enabled in the following situations:
●When the engine switch
is turned off
●If only the TRC system is turned off, the
TRC will turn on when vehicle speed increases
If both the TRC and VSC systems are turned off, automatic re-enabling will not occur when vehicle speed increases.
■Secondary Collision Brake operating
conditions
The vehicle speed is approximately 10 km/h
(6 mph) or more and the airbag sensor detects a collision. (The Secondary Colli-sion Brake will not operate when the vehicle
speed is below approximately 10 km/h [6 mph].)
■Secondary Collision Brake automatic
cancellation
The Secondary Collision Brake is automati-
cally canceled in the following situations:
●The vehicle speed drops below approxi-
mately 10 km/h (6 mph)
●A certain amount of time elapses during
operation
●The accelerator pedal is depressed a
large amount
■If “Check Secondary Collision Brake system” is displayed on the multi-infor-mation display
The system may be malfunctioning. Have the vehicle inspected at any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer.
■Reduced effectiveness of the EPS sys-tem
The effectiveness of the EPS system is
reduced to prevent the system from over- heating when there is frequent steering input over an extended period of time. The
steering wheel may feel heavy as a result. Should this occur, refrain from excessive steering input or stop the vehicle and turn
the engine off. The EPS sys- tem should return to normal within 10 min-utes.
■Operating conditions of emergency
brake signal
When the following three conditions are
met, the emergency brake signal will oper- ate:
●The emergency flashers are off.
●Actual vehicle speed is over 55 km/h
(35 mph).
●The brake pedal is depressed in a manner
that cause the system to judge from the vehicle deceleration that this is a sudden braking operation.
■Automatic system cancelation of emer-
gency brake signal
The emergency brake sign al will turn off in
any of the following situations:
●The emergency flashers are turned on.
●The brake pedal is released.
●The system judges from the vehicle deceleration that is not a sudden braking
operation.
WARNING
■The ABS does not operate effectively when
●The limits of tire gripping performance have been exceeded (such as exces-
sively worn tires on a snow covered road).
●The vehicle hydroplanes while driving at high speed on wet or slick roads.

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6-1. Maintenance and care
Maintenance and care
■Notes for a smart entry & start system
If the door handle becomes wet while the
electronic key is within the effective range, the door may lock and unlock repeatedly. In that case, follow the following correction
procedures to wash the vehicle:
●Place the key in a position 2 m (6 ft.) or
more separate from the vehicle while the vehicle is being washed. (Take care to ensure that the key is not stolen.)
●Set the electronic key to battery-saving mode to disable the smart entry & start
system. ( P.124)
■Aluminum wheels
●Remove any dirt immediately by using a
neutral detergent.
●Wash detergent off with water immedi-
ately after use.
●To protect the paint from damage, make
sure to observe the following precau- tions.• Do not use acidic, alkaline or abrasive
detergent • Do not use hard brushes• Do not use detergent on the wheels when
they are hot, such as after driving or park- ing in hot weather
■Brake caliper coating
●When using detergent, use neutral deter-gent. Do not use hard brushes or abra-
sive cleaners, as they will damage the coating.
●Do not use detergent on the brake cali-pers when they are hot.
●Wash detergent off immediately after use.
■Bumpers
Do not scrub with abrasive cleaners.
■Front side windows water-repellent coating
●The following precautions can extend the effectiveness of the water-repellent coat-ing.
• Remove any dirt, etc. from the front side windows regularly.• Do not allow dirt and dust to accumulate
on the windows for a long period. Clean the windows with a soft, damp cloth as soon as possible.
• Do not use wax or glass cleaners that contain abrasives when cleaning the win-dows.
• Do not use any metallic objects to remove condensation build up.
●When the water-repellent performance has become insufficient, the coating can be repaired. Contact any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer.
WARNING
■When washing the vehicle
Do not apply water to the inside of the
engine compartment. Doing so may cause the electrical components etc. to catch fire.
■When cleaning the windshield
Set the wiper switch to off. If the wiper switch is in AUTO, the wipers
may operate unexpectedly in the follow- ing situations, and may result in hands being caught or other serious injuries
and cause damage to the wiper blades.
Off
AUTO
●When the upper part of the windshield where the raindrop sensor is located is
touched by hand
●When a wet rag or similar is held close to the raindrop sensor
●If something bumps against the wind-shield
A
B

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6-3. Do-it-yourself maintenance
Maintenance and care
Stop the vehicle in a safe place on a
hard, flat surface.
 Set the parking brake.
 Shift the shift position to P.
 Turn off the intrusion sensor and tilt
sensor ( P.78)
 Stop the engine .
Screwdriver
Wheel nut wrench
Jack
Jack handle
Towing eyelet
Replacing the tire
When raising your vehicle with a
jack, position the jack correctly.
Improper placement may damage
your vehicle or cause injury.
If necessary tire replacement
seems difficult to perform, contact
any authorized Lexus retailer or
Lexus authorized repairer, or any
reliable repairer.
Before jacking up the vehicle
Location of the jack and tools
A
B
C
D
E