2018 Lexus LC500 sensor

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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

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4-5. Using the driving support systems
Driving
WARNING
■Handling the radar sensor
Blind Spot Monitor sensors are installed
behind the left and right sides of the rear bumper respectively. Observe the fol-lowing to ensure the Blind Spot Monitor
can function correctly.
●Keep the sensors and the surrounding areas on the rear bumper clean at all times.
If a sensor or its surrounding area on the rear bumper is dirty or covered with snow, the Blind Spot Monitor may
not operate and a warning message ( P.249) will be displayed. In this situ- ation, clear off the dirt or snow and
drive the vehicle with the operation conditions of the BSM function ( P.255) satisfied for approximately
10 minutes. If the warning message does not disappear, have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer.
●Do not subject a sensor or its sur-rounding area on the rear bumper to a
strong impact. If a sensor is moved even slightly off position, the system may malfunction
and vehicles may not be detected cor- rectly.In the following situations, have your
vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
• A sensor or its surrounding area is subject to a strong impact.
• If the surrounding area of a sensor is scratched or dented, or part of them
has become disconnected.
●Do not disassemble the sensor.
●Do not attach stickers to the sensor or surrounding area on the rear bumper.
●Do not modify the sensor or surround-ing area on the rear bumper.
●Do not paint the rear bumper any
color other than an official Lexus color.

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4-5. Using the driving support systems
■Operation of the BSM function
The BSM function uses radar sensors to detect the following vehicles traveling in
adjacent lanes and advises the driver of the presence of such vehicles via the indi-
cators on the outside rear view mirrors.
Vehicles that are traveling in areas that are not visible using the outside rear
view mirrors (the blind spots)
Vehicles that are approaching rapidly from behind in areas that are not visible
using the outside rear view mirrors (the blind spots)
■BSM function detection areas
The areas that vehicles can be detected in are outlined below.
The range of each detection area is:
Approximately 0.5 m (1.6 ft.) to 3.5 m (11.5 ft.) from either side of the vehicle*1
Approximately 1 m (3.3 ft.) forward of the rear bumper
Approximately 3 m (9.8 ft.) from the rear bumper
Approximately 3 m (9.8 ft.) to 60 m (197 ft.) from the rear bumper*2
*1: The area between the side of the vehicle and 0.5 m (1.6 ft.) from the side of the vehicle
BSM function
A
B
A
B
C
D

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4-5. Using the driving support systems
Driving
cannot be detected.
*2: The greater the difference in speed between your vehicle and the detected vehicle is,
the farther away the vehicle will be detected, causing the outside rear view mirror indi-
cator to illuminate or flash.
■The BSM function is operational when
The BSM function is operational when all of
the following conditions are met:
●The BSM function is on.
●The shift position is in a position other than R.
●The vehicle speed is greater than approx-imately 16 km/h (10 mph).
■The BSM function will detect a vehicle
when
The BSM function will detect a vehicle pres-
ent in the detection area in the following sit- uations:
●A vehicle in an adjacent lane overtakes your vehicle.
●Another vehicle enters the detection area when it changes lanes.
■Conditions under wh ich the BSM func- tion will not detect a vehicle
The BSM function is not designed to detect the following types of vehicles and/or
objects:
●Small motorcycles, bicycles, pedestrians,
etc.*
●Vehicles traveling in the opposite direc- tion
●Guardrails, walls, signs, parked vehicles
and similar stationary objects*
●Following vehicles that are in the same
lane*
●Vehicles traveling 2 lanes away from your
vehicle*
*: Depending on the conditions, detection
of a vehicle and/or object may occur.
■Conditions under wh ich the BSM func- tion may not function correctly
●The BSM function may not detect vehi-
cles correctly in the following situations: • When the sensor is misaligned due to a strong impact to the sensor or its sur-
rounding area • When mud, snow, ice, a sticker, etc. is covering the sensor or surrounding area
on the rear bumper • When driving on a road surface that is wet with standing water during bad
weather, such as heavy rain, snow, or fog • When multiple vehicles are approaching with only a small gap between each vehi-
cle • When the distance between your vehicle and a following vehicle is short
• When there is a significant difference in speed between your vehicle and the vehi-cle that enters the detection area
• When the difference in speed between your vehicle and another vehicle is changing
• When a vehicle enters a detection area traveling at about the same speed as your
vehicle • As your vehicle starts from a stop, a vehi-cle remains in the detection area
• When driving up and down consecutive steep inclines, such as hills, dips in the road, etc.
• When driving on roads with sharp bends, consecutive curves, or uneven surfaces• When vehicle lanes are wide, or when
driving on the edge of a lane, and the vehicle in an adjacent lane is far away from your vehicle
• When an accessory (such as a bicycle carrier) or towing eyelet is installed to the rear of the vehicle
• When there is a significant difference in height between your vehicle and the vehicle that enters the detection area
• Immediately after the BSM function is turned on
●Instances of the BSM function unneces-sarily detecting a vehicle and/or object may increase in the following situations:

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4-5. Using the driving support systems
• When the sensor is misaligned due to a strong impact to the sensor or its sur-rounding area
• When the distance between your vehicle and a guardrail, wall, etc. that enters the detection area is short
• When driving up and down consecutive steep inclines, such as hills, dips in the road, etc.
• When vehicle lanes are narrow, or when driving on the edge of a lane, and a vehi-cle traveling in a lane other than the adja-
cent lanes enters the detection area • When driving on roads with sharp bends, consecutive curves, or uneven surfaces
• When the tires are slipping or spinning • When the distance between your vehicle and a following vehicle is short
• When an accessory (such as a bicycle carrier) or towing eyelet is installed to the rear of the vehicle
■Operation of the RCTA function
The RCTA function uses radar sensors to detect vehicles approaching from the
right or left at the rear of the vehicle and alerts the driver of the presence of such
vehicles by flashing the outside rear view mirror indicators and sounding a buzzer.
Approaching vehicles
Detection areas of approaching vehicles
■RCTA icon display
When a vehicle approaching from the
right or left at the rear of the vehicle is
detected, the following will be dis-
played on the monitor screen
WARNING
■Cautions regarding the use of the function
The driver is solely responsible for safe driving. Always drive safely, taking care to observe your surroundings.
The BSM function is a supplementary function which alerts the driver that a
vehicle is in a blind spot of the outside rear view mirrors or is approaching rap-idly from behind into a blind spot. Do not
overly rely on the BSM function. As the function cannot judge if it is safe to change lanes, over reliance could lead to
an accident resulting in death or serious injury.
As the system may not function correctly under certain conditions, the driver’s own visual confirmation of safety is necessary.
RCTA function
A
B

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4-5. Using the driving support systems
■Conditions under which the RCTA func- tion will not detect a vehicle
The RCTA function is not designed to detect the following types of vehicles and/or objects:
●Vehicles approaching from directly behind
●Vehicles backing up in a parking space next to your vehicle
●Vehicles that the sensors cannot detect due to obstructions
●Guardrails, walls, signs, parked vehicles
and similar stationary objects*
●Small motorcycles, bicycles, pedestrians,
etc.*
●Vehicles moving away from your vehicle
●Vehicles approaching from the parking
spaces next to your vehicle*
*: Depending on the conditions, detection
of a vehicle and/or object may occur.
■Conditions under wh ich the RCTA func-
tion may not function correctly
●The RCTA function may not detect vehi-
cles correctly in the following situations: • When the sensor is misaligned due to a strong impact to the sensor or its sur-
rounding area • When mud, snow, ice, a sticker, etc. is covering the sensor or surrounding area
on the rear bumper • When driving on a road surface that is wet with standing water during bad
weather, such as heavy rain, snow, or fog • When multiple vehicles are approaching with only a small gap between each vehi-
cle • When a vehicle is approaching at high speed
• When a towing eyelet is installed to the rear of the vehicle.• When backing up on a slope with a sharp
change in grade
• When backing out of a shallow angle
parking spot
• Immediately after the RCTA function is
turned on • Immediately after the engine is started with the RCTA function on
• When the sensors cannot detect a vehi- cle due to obstructions
●Instances of the RCTA function unneces-sarily detecting a vehicle and/or object may increase in the following situations:
• When a vehicle passes by the side of your

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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