2018 LEXUS LS500H brake sensor

7
LS500h_OM_OM50F42U_(U) hybrid vehicles emit approximately the
same amount of electromagnetic
waves as the conventional gasoline
powered vehicles or home electronic
appliances despite of their electro-
magnetic shielding.
Unwanted noise may occur in the
reception of the mobile two-way radio.
Your Lexus is equipped with several
sophisticated computers that will
record certain data, such as:
 Engine speed
 Electric motor speed (traction
motor speed)
 Accelerator status
 Brake status
 Vehicle speed
 Shift position
 Hybrid battery (traction battery)
status
 Images from the camera sensor
(available only in situations when
sudden inputs o ccur while driving
[sudden acceleration, etc.], the
pre-collision braking function or the
pre-collision brake assist function
was operating, the Parking Support
Brake function [static objects] was
operating, or your vehicle was
involved in a collision)
The recorded data varies according to
the vehicle grade level and options
with which it is equipped. These com-
puters do not record conversations or sounds, and only record images out-
side of the vehicle in certain situations.
 Data usage Lexus may use the data recorded in these
computers to diagnose malfunctions, con-
duct research and development, and
improve quality.
Lexus will not disclose the recorded data to
a third party except:
• 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
 Usage of data collected through
Safety Connect / Lexus Enform
(U.S. mainland only) If your Lexus has Safety Connect or Lexus
Enform and if you have subscribed to those
services, please refe r to the Safety Con-
nect / Lexus Enform Telematics Subscrip-
tion Service Agreement for information on
data collected and its usage.
This vehicle is equipped with an event
data recorder (EDR). The main pur-
pose of an EDR is to record, in certain
crash or near crash-like situations, such
as an air bag deployment or hitting a
road obstacle, data that will assist in
understanding how a vehicle’s systems
performed. The EDR is designed to
record data related to vehicle dynam-Vehicle data recordings
Event data recorder

1854-3. Operating the lights and wipers
LS500h_OM_OM50F42U_(U) 4
Driving 4-3.Operating the lights and wipers
Turning the end of the lever turns on
the lights as follows:
U.S.A.
Canada
1 The side marker, parking, tail,
license plate, instrument panel
lights, and daytime running lights
( → P.185) turn on.
2 The headlights and all lights
listed above (except daytime run-
ning lights) turn on.
3 The headlights, daytime run-
ning lights ( → P.185) and all the lights listed above turn on and off
automatically.
4 (U.S.A.) Off
(Canada) The daytime run-
ning lights turn on. ( → P.185)■
AUTO mode can be used when
The power switch is in ON mode. ■
Daytime running light system ●
The daytime running lights illuminate
using the same lights as the parking lights
and illuminate brighter than the parking
lights. ●
To make your vehicle more visible to
other drivers during daytime driving, the
daytime running lights turn on automati-
cally when all of the following conditions
are met. (The daytime running lights are
not designed for use at night.)
• The hybrid system is operating
• The parking brake is released
• The headlight switch is in the (Can-
ada only), or *
position*
: When the surroundings are bright
The daytime running lights remain on after
they illuminate, even if the parking brake is
set again. ●
For the U.S.A.: Daytime running lights
can be turned off by operating the switch. ●
Compared to turning on the headlights,
the daytime running light system offers
greater durability and consumes less
electricity, so it can help improve fuel
economy.
■
Headlight control sensorHeadlight switch The headlights can be operated
manually or automatically.
Operating instructions
A
B

196 4-5. Using the driving support systems
LS500h_OM_OM50F42U_(U) 4-5.Using the driving support systems
*
:If equipped
■
PCS (Pre-Collision System)(vehi-
cles with Lexus Safety System+A)
→ P.209 ■
FCTA (Front Cross Traffic Alert)
→ P.227 ■
LTA (Lane Tracing Assist)
→ P.230 ■
AHB (Automatic High Beam)
→ P.188 ■
RSA (Road Sign Assist)
→ P.247 ■
Dynamic radar cruise control with
full-speed range
→ P.250 The pre-collision system is equipped
with a sophisticated computer that will
record certain data, such as:
• Accelerator status
•Brake status
• Vehicle speed
• Operation status of the pre-collision
system functions
• Information (such as the distance
and relative speed between your
vehicle and the vehicle ahead or
other objects)
• Images from the camera sensor
(available only in situations when
sudden inputs occur while driving
[sudden acceleration, etc.], the
pre-collision braking function or the
pre-collision brake assist function
was operating, the Parking Support
Brake function [static objects] was
operating, or your vehicle was
involved in a collision)
The pre-collision system does not Lexus Safety System+A *
The Lexus Safety System+A con-
sists of the following drive assist sys-
tems and contributes to a safe and
comfortable driving experience:
Drive assist systems of Lexus
Safety System+A WARNING■
Lexus Safety System+A
The Lexus Safety System+A is designed
to operate under the assumption that the
driver will drive safely , and is designed to
help reduce the impact to the occupants
and the vehicle in the case of a collision
or assist the driver in normal driving con-
ditions.
As there is a limit to the degree of recog-
nition accuracy and control performance
that this system can provide, do not
overly rely on this system. The driver is
always responsible for paying attention
to the vehicle’s surroundings and driving
safely.
Vehicle data recording

2034-5. Using the driving support systems
LS500h_OM_OM50F42U_(U) 4
Driving *
:If equipped
■
PCS (Pre-Collision System)(vehi-
cles with Lexus Safety System+)
→ P.220 ■
LKA (Lane-Keeping Assist)
→ P.240 ■
AHB (Automatic High Beam)
→ P.188 ■
Dynamic radar cruise control with
full-speed range
→ P.250 The pre-collision system is equipped
with a sophisticated computer that will
record certain data, such as:
• Accelerator status
•Brake status
• Vehicle speed
• Operation status of the pre-collision
system functions
• Information (such as the distance
and relative speed between your
vehicle and the vehicle ahead or
other objects)
• Images from the camera sensor
(available only when the pre-colli-
sion braking function or the pre-col-
lision brake assist function was
operating)
The pre-collision system does not
record conversations, sounds or
images of the inside of the vehicle.
 Data usage Lexus may use the data recorded in this
computer to diagnose malfunctions, con-
duct research and development, and
improve quality.
Lexus will not disclose the recorded data to
a third party except:
• 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
agencyLexus Safety System+ *
The Lexus Safety System+ consists
of the following drive assist systems
and contributes to a safe and com-
fortable driving experience:
Drive assist systems of Lexus
Safety System+
WARNING■
Lexus Safety System+
The Lexus Safety System+ is designed to
operate under the assumption that the
driver will drive safely, and is designed to
help reduce the impact to the occupants
and the vehicle in the case of a collision
or assist the driver in normal driving con-
ditions.
As there is a limit to the degree of recog-
nition accuracy and control performance
that this system can provide, do not
overly rely on this system. The driver is
always responsible for paying attention
to the vehicle’s surro undings and driving
safely. Vehicle data recording

2094-5. Using the driving support systems
LS500h_OM_OM50F42U_(U) 4
Driving
■
Pedestrian alert
When the system determines that
there is a possibility of a frontal collision
with a stationary or moving pedestrian
in front of your vehicle, a message will
be displayed on the head-up display to
warn the driver. ■
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.PCS (Pre-Collision System)
(vehicles with Lexus Safety
System+A) The pre-collision system uses a
front radar sensor and camera sen-
sor to detect vehicles and pedestri-
ans in front of your vehicle and front
side sensors to detect vehicles
approaching from the front left or
right side. When the system deter-
mines that the possibility of a frontal
collision with a vehicle or pedes-
trian is high, a warning operates to
urge the driver to take evasive
action and the potential brake pres-
sure is increased to help the driver
avoid the collision. If the system
determines that the possibility 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 collision.
The pre-collision system can be dis-
abled/enabled and the warning tim-
ing can be changed. ( → P.213)
System functions

218 4-5. Using the driving support systems
LS500h_OM_OM50F42U_(U) into, preventing the ac tive steering assist
from operating properly:
• When the white (yellow) lane lines are
difficult to see, such as when they are
faint, diverging/merging, or a shadow is
cast upon them
• When the lane is more wide or narrow
than normal
• When there is a light and dark pattern on
the road surface , such as due to road
repairs
• If the system determines that a collision
can be avoided by only using the brakes
• When a pedestrian is detected near the
centerline of the vehicle●
In some situations such as the following,
sufficient braking force or steering force
may not be obtained, preventing the sys-
tem 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,
improper tire inflation pressure, etc.)
• When the vehicle is being driven on a
gravel road or other slippery surface
• If there are deep ruts in the road
• When driving on a slope
• When driving on a horizontally slanted
road●
Some pedestrians and bicyclists, such as
the following, may not be detected by the
sensors, preventing the system from
operating properly:
• Pedestrians and bicyclists shorter than
approximately 3.2 ft. (1 m) or taller than
approximately 6.5 ft. (2 m)
• Bicyclists riding on unusual bicycles
(bicycles for small children, tricycles,
folding bicycles, BMX bicycles, tandem
bicycles, etc.)
• Pedestrians and bicyclists who are wear-
ing white and look extremely bright
• Pedestrians and bicyclists which are not
illuminated by the headli ghts at night, in a
tunnel, etc.
• Pedestrians whose clothing appears to
be nearly the same co lor or brightness as
their surroundings
• Pedestrians and bicy clists near walls,
fences, guardrails, or large objects • Pedestrians and bicyclists which are on a
metal object (manhole cover, steel plate,
etc.) on the road
• Pedestrians and bicyclists which are mov-
ing fast
• Pedestrians and bicyclists which change
speed or direction abruptly
• Pedestrians and bicyclists which suddenly
emerge from behind a vehicle or large
object
• Pedestrians and bicyclists which are
extremely close to the side of the vehicle
(outside rear view mirror, etc.)
• Pedestrians and bicyclists wearing over-
sized clothing, such as a rain coat, long
skirt, etc., making their silhouette obscure
• Pedestrians and bicyclists who are carry-
ing large baggage, ho lding an umbrella,
etc., hiding part of their body
• Pedestrians and bicyclists behind an
object that hides part of their body
• Pedestrians and bicyclists who are bend-
ing forward or squatting
• Pedestrians who are pushing a stroller,
wheelchair, bicycle or other vehicle
• Groups of pedestrians/bicyclists which
are close together ●
Some guardrails, such as the following,
may not be detected by the sensors, pre-
venting the system from operating prop-
erly:
• Guardrails which are less than approxi-
mately 1.9 ft. (60 cm) tall
• Short guardrails
• Irregularly-shaped gu ardrails (wire cable
guardrails, guardrails made of thin poles,
etc.)
• Guardrails which are not illuminated by
the headlights at nigh t, in a tunnel, etc.
• Guardrails which appear to be nearly the
same color or brightness as their sur-
roundings
• Guardrails which appear to be nearly the
same shape as their surroundings (walls,
etc.)
• Guardrails which are over a metal object
(manhole cover, steel plate, etc.)
• Guardrails which are hidden behind thick
grass
• Guardrails which are extremely close to
the side of the vehicle (outside rear view
mirror, etc.)
• Curved guardrails or guardrails at the
entrance of a curve

2194-5. Using the driving support systems
LS500h_OM_OM50F42U_(U) 4
Driving ●
In some situations such as the following,
the system may detect a pedestrian and
display a warning on the head-up display,
even though no pedestrian exists:
• If the front of the vehicle is raised or low-
ered, such as when the road surface is
uneven or undulating (due to ruts, etc.)
• When driving on a slope
• When driving on a horizontally slanted
road
• If the driver’s posture (driver seat posi-
tion) is extreme, such as excessively
reclined
• If the head-up display position is set
extremely high■
If the PCS warning light flashes or illumi-
nates and a warning message is dis-
played on the multi-information display
The pre-collision system may be temporar-
ily unavailable or there may be a malfunc-
tion in the system. ●
In the following situations, the warning
light will turn off, the message will disap-
pear and the system will become opera-
tional when normal operating conditions
return:
• When a sensor or the area around a sen-
sor is hot, such as in the sun
• When a sensor or the area around a sen-
sor is cold, such as in an extremely cold
environment
• When a sensor is dirty or covered with
snow, etc.
• When the part of the windshield in front
of the camera sensor is fogged up or cov-
ered with condensation or ice (Defog-
ging the windshield: → P.324)
• If the camera sensor is obstructed, such
as when the hood is open or a sticker is
attached to the windshield near the cam-
era sensor
●
If the PCS warning ligh t continues to flash
or remains illuminated or the warning
message does not disappear even
though the vehicle has returned to nor-
mal, the system may be malfunctioning.
Have the vehicle inspected by your Lexus
dealer immediately.
■
If VSC is disabled
●
If VSC is disabled ( → P.302), the
pre-collision brake assist and pre-colli- sion braking functions are also disabled. ●
The PCS warning light will turn on and
“VSC Turned Off Pre-Collision Brake
System Unavailable” will be displayed on
the multi-information display.

220 4-5. Using the driving support systems
LS500h_OM_OM50F42U_(U) ■
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. ■
Pre-collision seatbacks (front pas-
senger’s seat / power rear seat [if
equipped])
If the system determines that the possi-
bility of a frontal collision is high, it may
move the seatbacks of the front pas-
senger’s seat and power rear seats to
the upright position automatically, if
reclined. If a seat is being adjusted, it may not be
moved by the pre-collis ion seat function.
■
Suspension control
When the system determines that the
possibility of a frontal collision is high, PCS (Pre-Collision System)
(vehicles with Lexus Safety
System+) The pre-collision system uses a
radar sensor and camera sensor to
detect vehicles and pedestrians 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.222)
System functions