sensor lexus LC500 2018 Service Manual

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4-5. Using the driving support systems
■Warnings may not occur when
In the following instances, warnings
may not occur even when the vehicle-
to-vehicle distance is small.
 When the speed of the preceding
vehicle matches or exceeds your
vehicle speed
 When the preceding vehicle is trav-
eling at an extremely slow speed
 Immediately after the cruise control
speed was set
 When depressing the accelerator
pedal
When constant speed control mode is
selected, your vehicle will maintain a
set speed without controlling the vehi-
cle-to-vehicle distance. Select this
mode only when vehicle-to-vehicle dis-
tance control mode does not function
correctly due to a dirty radar sensor,
etc.
1 With the cruise control off, press
and hold the cruise control main
switch for 1.5 seconds or more.
Immediately after the switch is pressed, the
radar cruise control indicator will come on. Afterwards, it switches to the cruise con-trol indicator.
Switching to constant speed control mode is only possible when operating the switch
with the cruise control off.
2 Accelerate or decelerate, with
accelerator pedal operation, to the
desired vehicle speed (at or above
approximately 40 km/h [25 mph])
and press the -/SET switch to set
the speed.
Cruise control “SET” indicator will come on.
The vehicle speed at the moment the switch is released becomes the set speed.
Adjusting the speed setting: P.233
Canceling and resuming the speed setting:
 P.235
■Dynamic radar cruise control with full-
speed range can be set when
●The shift position is in D.
●LC500: Range 4 or higher of D has been
Selecting constant speed con-
trol mode

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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
steering feel, suspension control and
VDIM control, making it suitable for pow-
erful sporty driving.
When in SPORT S mode, if the driving
mode select switch is turned backward, the
“Sport S+” indicator comes on.
■Operation of the air conditioning sys- tem in Eco drive mode
Eco drive mode controls the heating/cool- ing operations and fan speed of the air con-ditioning system to enhance fuel efficiency.
To improve air conditioning performance, perform the following operations:
●Adjust the fan speed ( P.281, 283)
●Turn off Eco drive mode
■Automatic deactivation of sport mode
and custom mode
If the engine switch <power switch> is
turned off after driving in sport mode or custom mode, the drive mode will be changed to normal mode.
■Driving mode pop-up display
When the driving mode is changed, the selected driving mode will be temporarily
displayed on the side display. ( P.277)
For custom mode, select “Setting” on the
display to customize the driving mode.
■Types of sensors
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
■Display
When the sensors detect an obstacle, a
graphic is shown on the multi-informa-
tion display, head-up display and Cen-
ter Display depending on the position
and distance to the obstacle.
 Multi-information display and head-
Lexus parking assist-sensor
The distance from your vehicle to
nearby obstacles when parallel
parking or maneuvering into a
garage is measured by the sensors
and communicated via the multi-
information display, head-up dis-
play (if equipped), Center Display
and a buzzer. Always check the sur-
rounding area when using this sys-
tem.
System components
A
B
C
D

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4-5. Using the driving support systems
up display
Front corner sensor detection
Front center sensor detection
Rear corner sensor detection
Rear center sensor detection
 Center Display
A graphic is shown when the Lexus park-
ing assist monitor is displayed (insert dis-
play)
A simplified image is displayed on the
upper right corner of Center Display when
an obstacle is detected.
1 Press or of the meter con-
trol switches, and select .
2 Press or of the meter con-
trol switches, and select “Parking
Assist”, and press “OK”.
When the Lexus parking assist-sensor
is turned on, the Lexus parking assist-
sensor indicator comes on to inform
the driver that the system is opera-
tional.
■The Lexus parking assist-sensor can be
operated when
●Front center sensors:
• The engine switch <power switch> is in IGNITION ON mode <ON mode>.
• The shift position is in a position other than P or R.• The vehicle speed is less than about 10
km/h (6 mph).
●Front corner sensors:
• The engine switch <power switch> is in IGNITION ON mode <ON mode>.• The shift position is in a position other
than P. • The vehicle speed is less than about 10 km/h (6 mph).
(At any speed when the shift position is in R)
●Rear corner and rear center sensors:• The engine switch <power switch> is in IGNITION ON mode <ON mode>.
• The shift position is in R.
■Muting the buzzer sound
●To mute the buzzer sound:
The buzzer can be temporarily muted by pressing “OK” of the meter control switches
while an obstacle detection display is shown on the multi-information display.
●To cancel the mute:
Mute will be automatically canceled in the
following situations. • When the shift position is changed (except shifting from D to N, or N to D)
• When the vehicle speed has reached or exceeded 10 km/h (6 mph) with the shift position in D
Turning Lexus parking assist-sen-
sor on/off
A
B
C
D

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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 <power switch>
is turned off once and turned to IGNI- TION ON mode <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
Driving
Approximately 150 cm (4.9 ft.)
Approximately 60 cm (2.0 ft.)
The diagram shows the detection range of
the sensors. Note that the sensors cannot
detect obstacles that are extremely close
to the vehicle.
The range of the sensors may change
depending on the shap e of the object etc.
■Multi-information display, head-up
display and Center Display
Sensors that detect an obstacle will illu-
minate continuously or blink.
*1: The illustrations show the graphics on
the Multi-information display, and differ
from the graphics on the head-up dis-
play and Center Display. Depending on
the distance of the obstacle, the sensor
display on Center Display illuminates or
blinks in various cycles, although the
width of it does not change.
*2: Multi-information display and head-up
display
*3:Center Display
■Buzzer operation and distance to
an obstacle
A buzzer sounds when the sensors are
operating.
 The buzzer beeps faster as the vehi-
cle approaches an obstacle. When
Display*1Approximate distance
to obstacle
(continuous*2 or
blinking
slowly*3)
Front center sensor:
100 cm (3.3 ft.) to 50
cm (1.6 ft.)
Rear center sensor:
150 cm (4.9 ft.) to 60
cm (2.0 ft.)
(continuous*2or
blinking*3)
Front center sensor:
50 cm (1.6 ft.) to 40 cm
(1.3 ft.)
Rear center sensor:
60 cm (2.0 ft.) to 45
cm (1.5 ft.)
Front and rear corner
sensor:
60 cm (2.0 ft.) to 45
cm (1.5 ft.)
B
C
(continuous*2 or
blinking rap-
idly*3)
Front center sensor:
40 cm (1.3 ft.) to 30 cm
(1.0 ft.)
Rear center sensor:
45 cm (1.5 ft.) to 35 cm
(1.1 ft.)
Front and rear corner
sensor:
45 cm (1.5 ft.) to 30 cm
(1.0 ft.)
(blinking*2 or
continuous*3)
Front center sensor:
Less than 30 cm (1.0 ft.)
Rear center sensor:
Less than 35 cm (1.1 ft.)
Front and rear corner
sensor:
Less than 30 cm (1.0 ft.)
Display*1Approximate distance
to obstacle

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4-5. Using the driving support systems
the vehicle comes within the follow-
ing distance of the obstacle, the
buzzer sounds continuously:
• Front center sensors: Approximately 30
cm (1.0 ft.)
• Corner sensors: Approximately 30 cm
(1.0 ft.)
• Rear center sensors: Approximately 35
cm (1.1 ft.)
 When 2 or more obstacles are
detected simultaneously, the buzzer
system responds to the nearest
obstacle. If one or both come within
the above distances, the beep will
repeat a long tone, followed by fast
beeps.
*:If equipped
BSM (Blind Spot Monitor)*
The Blind Spot Monitor uses the
sensors installed behind the rear
bumper. The system is intended to
assist the driver check areas that
are not easily visible. The system
has the following 2 functions:
 The BSM (Blind Spot Monitor)
function
Assists the driver in making a deci-
sion when changing lanes
 The RCTA (Rear Crossing Traffic
Alert) function
Assists the driver when backing up
These functions use same sensors.
System components

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4-5. Using the driving support systems
Driving
Multi-information display
The BSM function/RCTA function can be
turned on/off.
The RCTA function is available when the
BSM function is on.
Outside rear view mirror indicators
BSM function:
When a vehicle is detected in a blind spot
of the outside rear view mirrors or
approaching rapidly from behind into a
blind spot, the outside rear view mirror
indicator on the detected side will illumi-
nate. If the turn signal lever is operated
toward the detected side, the outside rear
view mirror indicator will flash.
RCTA function:
When a vehicle approaching from the right
or left at the rear of the vehicle is detected,
both outside rear view mirror indicators
will flash.
BSM indicator/RCTA indicator
When the BSM function/RCTA function is
turned on, the indicator comes on.
Monitor screen display (RCTA
function only)
If a vehicle approaching from the right or
left at the rear of the vehicle is detected,
the RCTA icon ( P.256) for the detected
side will be displayed on the monitor
screen. This illustrat ion shows an example
of a vehicle approaching from the left at the
rear of the vehicle.
RCTA buzzer (RCTA function only)
If a vehicle approaching from the right or
left at the rear of the vehicle is detected, a
buzzer will sound. The buzzer also sounds
for approximately 1 second immediately
after the BSM function is operated to turn
the system on.
1 Press or of the meter con-
trol switches, select .
2 Press or of the meter con-
trol switches, select “BSM”, and
press “OK”.
3 Press or of the meter con-
trol switches, select “BSM” or
“RCTA”, and press “OK”.
■Outside rear view mirror indicator visi-
bility
In strong sunlight, the outside rear view mir-
ror indicator may be difficult to see.
■Hearing the RCTA buzzer
The RCTA buzzer may be difficult to hear
over loud noises, such as if the audio system volume is high.
■When “Blind Spot Monitor Unavailable” is shown on the mu lti-information dis-
play
Water, snow, mud, etc., may be built up in
the vicinity of the sensor area of the bumper. ( P.253) Removing the water, snow, mud, etc., from the vicinity of the sensor area of
the bumper should return it to normal.
Also, the sensor may not function normally
when used in extremely hot or cold weather.
■When “Blind Spot Monitor System Mal- function” is shown on the multi-informa- tion display
There may be a sensor malfunction or volt- age abnormality. Have the vehicle
inspected at any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
■Customization
Some functions can be customized. (Customizable features: P.423)
A
B
C
D
E
Turning the BSM function/RCTA
function on/off