LEXUS SAFETY SYSTEM+ 2.0 - A COMPREHENSIVE SUITE OF ADVANCED TECHNOLOGIES
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LEXUS SAFETY SYSTEM+ 2.0
Features, Operation, Setting Adjustments, Limitations and Precautions
LEXUS SAFETY
SYSTEM+ 2.0
A COMPREHENSIVE SUITE OF
ADVANCED TECHNOLOGIES
Lexus Safety System+ 2.01 is designed to help protect drivers, passengers, people in other vehicles on the road,
pedestrians and cyclists from harm. This latest generation of Lexus Safety System+ represents the next milestone in a long
history of creating advancements and innovations in safety that help prevent crashes and protect people.
LEXUS SAFETY SYSTEM+ 2.0 ADDRESSES
THE THREE MOST COMMON ACCIDENT TYPES
FRONTAL COLLISIONS UNINTENDED LANE DEPARTURES NIGHTTIME ACCIDENTS
Under certain conditions, Lexus Safety System+ 2.01 is designed to support driver awareness, decision making and vehicle operation over a wide
range of speeds. Packaged together in an integrated system, Lexus Safety System+ features help address three key areas of accident protection*:
preventing or mitigating frontal collisions2, keeping drivers within their lane3, and enhancing road safety during nighttime driving4. However, drivers
are responsible for their own safety, and must always drive safely, obey traffic speed limits and laws and focus on the road while driving.
Lexus Safety System+ 2.01 builds on the previous Lexus Safety System+ suite and consists of six active safety and driver assistance systems:
• Pre-Collision System2 with Daytime/Low-Light Vehicle and
• Intelligent High Beams4
Pedestrian Detection, plus Daytime Bicyclist Detection5
• Road Sign Assist7
• Dynamic Radar Cruise Control6 with All-Speed Range
• Lane Tracing Assist8
• Lane Departure Alert3 with Steering Assist
Actual driver assistance system may vary by vehicle – refer to Owner’s Manual to confirm.
* To ensure proper system function, Lexus does not recommend vehicle ride height modification which may adversely affect the operation of the Pre-Collision System
and Automatic Emergency Braking, Dynamic Radar Cruise Control, Lane Departure Alert, Lane Tracing Assist, Road Sign Assist and Intelligent High Beams systems.
1
LEXUS SAFETY SYSTEM+ 2.0
Features, Operation, Setting Adjustments, Limitations and Precautions
PRE-COLLISION SYSTEM
WITH DAYTIME/LOW-LIGHT VEHICLE AND PEDESTRIAN DETECTION, PLUS DAYTIME BICYCLIST DETECTION
Availability:
LS 2019 | ES 2019 | UX 2019
Pre-Collision System2 uses an integrated forward-facing camera and grille-
mounted radar system designed to help mitigate or avoid a frontal collision.
For Lexus Safety System+ 2.01, Pre-Collision System has been enhanced with
the ability to detect a bicyclist in daytime situations, as well as a vehicle and
a pedestrian in both daytime and low-light situations5.
VEHICLE DETECTION
When Pre-Collision System2 determines that the possibility of a frontal
collision with another vehicle is high, it prompts the driver to take evasive
action and brake by using an audible and visual alert. If the driver notices the
hazard and brakes, Pre-Collision System may use Brake Assist9 to provide
additional braking force.
If the driver does not brake in a set time and the system determines that the possibility of a frontal collision with another vehicle is extremely
high, the system may use Automatic Emergency Braking (AEB)10 to automatically apply the brakes, reducing speed to help mitigate the
impact or avoid the collision entirely if possible.
PEDESTRIAN AND BICYCLIST DETECTION
Under certain conditions, if the Pre-Collision System2 determines that
the possibility of a frontal collision with a pedestrian or bicyclist is high5, it
prompts the driver to take evasive action and brake by using an audible and
visual alert. If the driver notices the hazard and brakes, the system may use
Brake Assist9 to provide additional braking force.
If the driver does not brake in a set time and the system determines that the
risk of collision with a pedestrian or bicyclist is extremely high5, the system
may use Automatic Emergency Braking (AEB)10 to automatically apply the
brakes, reducing speed to help mitigate the impact or avoid the collision
entirely if possible.
Refer to a Lexus Owner’s Manual for additional information on Pre-Collision System operation, settings, adjustments, limitations and
precautions.
Operation Speed Range Operation Speed Range Potential Speed Reduction
Alert Automatic Emergency Braking (AEB) Automatic Emergency Braking (AEB)
Pre-Collision System
7-110 mph 7-110 mph 37 mph
Vehicle Detection
Pre-Collision System
7-50 mph 7-50 mph 25 mph
Pedestrian Detection
Pre-Collision System
7-50 mph 7-50 mph 25 mph
Bicyclist Detection
All figures listed above are approximate.
2
LEXUS SAFETY SYSTEM+ 2.0
Features, Operation, Setting Adjustments, Limitations and Precautions
ALL-SPEED DYNAMIC RADAR CRUISE CONTROL
Availability:
LS 2019 | ES 2019 | UX 2019
Dynamic Radar Cruise Control6 is a high-tech cruise control system that uses
a front grille-mounted radar and a forward-facing camera to detect a vehicle
in front of you and automatically adjust the vehicle's speed to help maintain a
pre-set distance behind a vehicle ahead.
Intended for highways, and similar to “constant speed” cruise control, Dynamic
Radar Cruise Control6 lets drivers maintain a set speed without constant
throttle input from the driver. Dynamic Radar Cruise Control goes a step
further by including a vehicle-to-vehicle distance control system, which adjusts
the vehicle speed to help maintain a pre-set distance from a vehicle ahead.
This means that if the vehicle ahead is detected traveling at a slower speed
than your pre-set speed, Dynamic Radar Cruise Control6 will automatically
slow the vehicle to maintain a pre-set following distance without deactivating cruise control. If Dynamic Radar Cruise Control determines
the vehicle needs to slow down even more, an audible and visual alert occurs and brakes may be applied. When there’s no longer a
preceding vehicle driving slower than your set speed, Dynamic Radar Cruise Control will accelerate back to your set speed.
All models equipped with Lexus Safety System+ 2.01 feature All-Speed Dynamic Radar Cruise Control6, which is designed to allow low-
speed following, speed matching, stopping, and acceleration/deceleration to a preceding vehicle.
Refer to a Lexus Owner’s Manual for additional information on Dynamic Radar Cruise Control operation, settings, adjustments, limitations
and precautions.
Minimum Set Speed Operation Speed Range
All-Speed Dynamic Radar Cruise Control 19 mph 0-110 mph
All figures listed above are approximate.
LANE DEPARTURE ALERT
WITH STEERING ASSIST
Availability:
LS 2019 | ES 2019 | UX 2019
Lane Departure Alert3 is designed to use the vehicle's forward-facing camera
to detect lane departure when traveling on relatively straight roads with
clear white or yellow lane markings, as well as certain road edges or
curbs. The system's current operating status is indicated through colored lane
marking illustrations on the vehicle's Multi-Information Display (MID) and
available Head Up Display (HUD). If Lane Departure Alert determines that
the vehicle is starting to unintentionally deviate from its visibly marked lane, the
system alerts the driver with an audible and visual alert and steering wheel
vibration. When this alert occurs, drivers must carefully check the surrounding
road before safely directing the vehicle back to the center of the lane.
STEERING ASSIST
In addition to the alert function, Lexus Safety System+ 2.01 Lane Departure Alert also includes Steering Assist3. When this functionality is
enabled and Lane Departure Alert senses that the vehicle is unintentionally drifting from its lane, the system may automatically make small
corrective steering inputs to help the driver keep the vehicle in its lane.
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LEXUS SAFETY SYSTEM+ 2.0
Features, Operation, Setting Adjustments, Limitations and Precautions
ROAD EDGE DETECTION
For Lexus Safety System+ 2.0 1 , Lane Departure Alert has been updated with Road Edge Detection, which may be capable of sensing the
boundary between the road surface and the side of the road in the absence of clear lane markings.
Refer to a Lexus Owner’s Manual for additional information on Lane Departure Alert operation, settings, adjustments, limitations and
precautions.
Minimum Operation Speed
Lane Departure Alert 32 mph
All figures listed above are approximate.
INTELLIGENT HIGH BEAMS
Availability:
LS 2019 | ES 2019 | UX 2019
Intelligent High Beams4 are a safety system designed to help the driver see more
clearly at night – while reducing glare for other drivers. By using high beams more
frequently, the system may allow earlier detection of pedestrians and obstacles.
When activated, Intelligent High Beams4 are designed to rely on an in-vehicle
camera to help detect the headlights of oncoming vehicles and taillights of
preceding vehicles, then automatically toggle between high and low beams.
Refer to a Lexus Owner’s Manual for additional information on Intelligent
High Beams operation, settings, adjustments, limitations and precautions.
Minimum Operation Speed
Intelligent High Beams 25 mph
All figures listed above are approximate.
ROAD SIGN ASSIST
Availability:
LS 2019 | ES 2019 | UX 2019
Road Sign Assist7 is designed to read certain traffic signs and display them on the vehicle’s Multi-
Information Display (MID) or available Head Up Display (HUD). Road Sign Assist also aides the
driver in the event a sign is overlooked or missed. While a speed limit sign is displayed, the system notifies
the driver if the vehicle exceeds the displayed speed limit plus a specified threshold value. The driver is
notified by displaying an orange border of the sign in the MID. The system can read Speed Limit, Stop,
Yield, and Do Not Enter signs. When Do Not Enter signs are detected, the driver is notified by flashing
the sign in the multi-information display. The settings can be customized so that a buzzer sounds when
the notification is displayed.
Refer to a Lexus Owner’s Manual for additional information on Road Sign Assist operation, settings,
adjustments, limitations and precautions.
4
LEXUS SAFETY SYSTEM+ 2.0
Features, Operation, Setting Adjustments, Limitations and Precautions
LANE TRACING ASSIST
Availability:
LS 2019 | ES 2019 | UX 2019
Lane Tracing Assist8 is designed to work with Dynamic Radar Cruise
Control6 to keep the vehicle centered in its visibly marked lane and
preemptively avoid unintented lane departures.
Lane Tracing Assist8 uses a forward-facing camera to monitor lane markings
– as well as the path of the vehicle ahead, if needed – and is designed to
automatically make constant steering inputs to help keep the vehicle
centered in its lane. Lane Tracing Assist requires the driver's hands to remain
on the steering wheel.
Refer to a Lexus Owner’s Manual for additional information on Lane Tracing
Assist operation, settings, adjustments, limitations and precautions.
LEXUS SAFETY SYSTEM+ VERSUS LEXUS SAFETY SYSTEM+ 2.0
Lexus Safety System+ Lexus Safety System+ 2.0
(First generation) (Second generation)
Vehicle5 a a
Pre-Collision System2
Pedestrian (daytime)5 a a
Pedestrian (low-light)5 – a
Bicyclist (daytime)5 – a
Dynamic Radar Cruise Control6 a a
Lane Departure Alert with Steering Assist3 a a
Intelligent High Beams4 a a
Road Sign Assist7 – a
Lane Keep Assist11 a –
Lane Tracing Assist8 – a
Actual system availability may vary based on vehicle. Please refer to Owner’s Manual to confirm.
5
LEXUS SAFETY SYSTEM+ 2.0
Features, Operation, Setting Adjustments, Limitations and Precautions
PRECAUTIONS: PRE-COLLISION SYSTEM
Pre-Collision System2 is premised on safe driving by the driver. It is not a system that will avoid collisions under all conditions. Do not depend on the system or use it in place of
emergency brake operation. Pre-Collision System operation is dependent on the front grille-mounted millimeter-wave radar and in-vehicle camera's ability to detect and see clearly
a preceding vehicle or pedestrian3 on relatively straight roadways, as well as the visibility/detectability of the preceding vehicle/pedestrian itself. Pre-Collision System may not operate
if it does not recognize a preceding vehicle or pedestrian. Pre-Collision System is not designed to detect animals or other objects. Situations such as a fogged, dirty, broken or tinted
windshield or rain, snow, ice or sticker-covered windshield blocking the camera or laser may affect Pre-Collision System operation. Intense light from the front or inclement weather
obstructing camera visibility or laser detection, or sharp curves in the road, may affect Pre-Collision System operation. Also, changes to the vehicle's height or angle from load, towing,
suspension or tire modifications/chains or lift kits may affect Pre-Collision System operation. Furthermore, if a preceding vehicle is not correctly recognized, unneeded driver alerts or
automatic braking may occur, so drivers need to pay continuous attention to the surrounding conditions, the direction of travel and vehicle's location on the road. Ultimately, drivers are
responsible for their own safe driving, steering, braking, the vehicle speed and operation, and distance to a preceding vehicle at all times. (NOTE: Vehicles equipped with Lexus Safety
System+ 2.01 may also detect a bicyclist3, in addition to a vehicle and a pedestrian.)
Pre-Collision System2 may not recognize a vehicle or a pedestrian in the following conditions and environments:
When vehicle angle/stance is changed, for example if the vehicle is lifted or lowered, is
If the rear-most surface of the preceding vehicle is small, low or irregularly high
towing, or is loaded down with weight
When there is a problem with the vehicle or if it is modified If the camera and radar is misaligned or being blocked (by a wiper blade, etc.)
When visibility to the front is poor due to inclement weather (rain, snow, fog, dust raised
When something is on the sensor such as bugs, dirt, ice, a sticker, etc.
by wind, sandstorm, blizzard, etc.)
When a pedestrian or vehicle suddenly appears in front of the vehicle When the sensors detect something that is not a preceding vehicle or pedestrian
When driving on an up or down slope While making a left/right turn and for a few seconds after making a left/right turn
When very close to a preceding vehicle (approximately 6.5 feet or less) or coming If camera recognition conditions are poor shortly after starting the vehicle or when the
close to a preceding vehicle after changing lanes camera is hot, such as when parked in the sun
When a preceding vehicle cuts in front of you suddenly, abruptly steers, accelerates or When driving through steam or smoke, or in inclement weather such as heavy rain,
decelerates, or is offset compared to your vehicle fog, snow or a sandstorm
When driving in low light (dusk, dawn, etc.) or when driving without headlights at night
If the vehicle in front does not have its taillights on
or in a tunnel
When a vehicle or a pedestrian approaches your vehicle head-on or nearly head-on When a pedestrian suddenly appear from behind or alongside a vehicle
When approaching the side or front of a vehicle When a pedestrian is close to abrupt changes in lighting, such as at tunnel exits
When the overall width of the preceding vehicle is narrow (such as an Ultra When a pedestrian is staying close to or walking alongside a wall, fence, guardrail,
Lightweight Vehicle or motorcycles) vehicle or other obstacle
If a preceding vehicle has a small rear end, such as an unloaded truck, or is carrying a When a pedestrian is wearing white that reflects sunlight and looks extremely bright, or
load which protrudes past its rear bumper is in the dark, such as at night or while in a tunnel
If a vehicle ahead is irregularly shaped, such as a tractor or side car When pedestrians are walking in a group or are close together
When a pedestrian is staying close to or walking alongside a wall, fence, guardrail,
If the sun or other light is shining directly on a detectable object ahead
vehicle or other obstacle
When a pedestrian has clothing with brightness/color similar to scenery and that blend
If a detectable object cuts in front of your vehicle or emerges from beside a vehicle
into the background
If a detectable object ahead makes an abrupt maneuver (such as sudden swerving,
When a pedestrian is walking at high speed of approximately 5 mph or higher
acceleration or deceleration)
When a pedestrian abruptly changes walking speed, is walking fast or is running out
When suddenly cutting behind a preceding detectable object
from behind a vehicle or a large object
When a detectable object ahead is not directly in front of your vehicle When a pedestrian collides with the edge of the vehicle
This section is abbreviated and does not include all precautions or limitations.
Refer to a Lexus Owner's Manual for a more comprehensive description of system operation, precautions and limitations.
6
LEXUS SAFETY SYSTEM+ 2.0
Features, Operation, Setting Adjustments, Limitations and Precautions
When the vehicle is hit by water, snow, dust, etc. from a vehicle ahead When a pedestrian is walking on top of metal on the road surface
While driving on a hill or curve, and for a few seconds after driving on a curve When a pedestrian is 3 feet or shorter or 6.5 feet or taller
If your vehicle is skidding, wobbling, or being driven at extremely high speeds When a pedestrian has a part of the body hidden by any object
If the wheels are misaligned When a pedestrian leans forward, crouches, squats, lies down or stands still upright
If the front of the vehicle is raised or lowered, has high ground clearance, or has a low When a pedestrian wears oversized clothing (a rain coat, long skirt, etc.), obscuring
rear end, such as a low bed trailer the pedestrian's silhouette
When a very bright light, such as the sun or the headlights of oncoming traffic, shines When a pedestrian carries large baggage, holds an umbrella, etc., hiding part of the
directly into the camera sensor body
After the hybrid system has started and the vehicle has not been driven for a certain
When a pedestrian pushes a stroller, wheelchair, wheelbarrow or other vehicle
amount of time
When a cyclist is moving fast, or is riding a small bicycle for children or a bicycle with
large baggage
Pre-Collision System2 may operate in the following conditions, even if a collision is not likely:
When vehicle angle/stance is changed, for example if the vehicle is lifted or lowered, is
When the camera and radar are misaligned
towing, or is loaded down with weight
When there is an obstacle, vehicle, pedestrian, object, or parked car at the point of When turning around a curve where there is a pedestrian to the front of your vehicle
entering a curve, in a curve or at an intersection on a sidewalk
When driving on a narrow path surrounded by a structure, such as in a tunnel or on an
iron bridge, or through a place with a low structure above the road (low ceiling, traffic While passing near a pedestrian or through a group of pedestrians
sign, etc.)
When there is a metal object (manhole cover, steel plate, etc.), steps, dip, or a If a pedestrian suddenly crosses in front of your vehicle, or suddenly stops while
protrusion on the road surface or roadside crossing
When passing an oncoming vehicle when turning right or left or passing an oncoming
When passing a preceding vehicle or a leading vehicle turning to the left or right
vehicle around a curve
When driving on an uneven road, or when driving through weeds, steam or smoke When passing through parked cars or driving between vehicles
When suddenly getting close to another vehicle that is driving ahead When driving on a narrow road with roadside guard rails, telephone poles, trees, etc.
Upon detecting a raised intersection, sign or advertisement board in front of the
When a crossing pedestrian or cyclist approaches very close to the vehicle
vehicle
While driving up or down a slope, where metal such as a steel plate (manhole cover) is
When passing under an object (billboard, etc.) at the top of an uphill road
in front of the vehicle
When rapidly closing on an electric toll gate barrier, parking area barrier, or other When driving through or under an object that may contact the vehicle, such as thick
barrier that opens and closes grass, tree branches, or a banner
When passing a vehicle or pedestrian, or vehicle in an oncoming lane that is stopped
When the vehicle is hit by water, snow, dust, etc. from a detectable object ahead
to make a right/left turn
When approaching an object on the roadside, such as guardrails, utility poles, trees,
When changing lanes while overtaking a detectable object
or walls
When rapidly closing on a preceding vehicle, or overtaking a preceding vehicle that is When there are patterns or paint on the road or a wall that may be mistaken for a
changing lanes detectable object
When driving on a road where relative location to a detectable object ahead in an When driving near a TV tower, broadcasting station, electric power plant, or other
adjacent lane may change, such as on a winding road location where strong radio waves or electrical noise may be present
This section is abbreviated and does not include all precautions or limitations.
Refer to a Lexus Owner's Manual for a more comprehensive description of system operation, precautions and limitations.
7
LEXUS SAFETY SYSTEM+ 2.0
Features, Operation, Setting Adjustments, Limitations and Precautions
If the front of the vehicle is raised or lowered, such as when the road surface is uneven When driving near an object that reflects radio waves, such as a large truck or
or undulating guardrail
When using an automatic car wash
In the following situations, Pre-Collision System2 may not operate properly and should be disabled:
When vehicle angle/stance is changing dramatically, for example if the vehicle is lifted
When transporting the vehicle via truck, boat, train or similar means of transportation
or lowered, is towing, or is loaded down with weight
When the vehicle is towing or being towed When the vehicle is driven in a sporty manner or off-road
When inspecting the vehicle using a drum tester such as a chassis dynamometer or When a compact spare tire or an emergency tire puncture repair kit is used, tire chains
speedometer tester, or when using an on-vehicle wheel balancer are installed, or the tires are the incorrect size, not properly inflated or very worn
When the vehicle is raised on a lift with the engine running and the tires are allowed to When temporarily attaching accessories (such as snow removing equipment) that
rotate freely obstruct the front sensor to the vehicle
After a strong impact has been applied to the front bumper or front grille, due to an If the vehicle cannot be driven in a stable manner, such as when the vehicle has been in
accident or other reasons an accident or is malfunctioning
Pre-Collision System2 will not operate when the following operations are performed:
While VSC12 is active or the accelerator or brake is pressed While driving at very high speeds or backing up
If the shift lever is in Reverse If VSC is disabled, only the pre-collision warning function will be operational
If a battery terminal has been disconnected and reconnected and then the vehicle has When the L4 operation indicator lights up, only the collision warning is enabled (only
not been driven for a certain amount of time vehicles with L4 mode)
PRECAUTIONS: DYNAMIC RADAR CRUISE CONTROL
Dynamic Radar Cruise Control6 is a system designed for driving on expressways and highways. Dynamic Radar Cruise Control is not designed for, and should not be used in traffic
conditions that are encountered when driving on roads other than expressways and highways. Attentive and responsible driving is necessary even when Dynamic Radar Cruise Control
is active, otherwise an accident may occur. Dynamic Radar Cruise Control operation is dependent on the millimeter-wave radar and in-vehicle camera's ability to detect a preceding
vehicle, as well as the detectability of the preceding vehicle itself. While driving, drivers will need to continually pay attention to the distance between vehicles, respect the leading vehicle and
surroundings, and decelerate or accelerate to ensure distance between their vehicle and the preceding or following vehicles is safe. Situations such as a dirt, rain, snow, film, ice or sticker-
covered/broken front Lexus emblem blocking the radar all may affect Dynamic Radar Cruise Control operation.
In the following conditions, Dynamic Radar Cruise Control6 may lead to an unexpected accident, so do not use the system:
When vehicle angle/stance is changed, for example if the vehicle is lifted or lowered, is
When driving in inclement weather such as rain, fog, snow or a dust storm
towing, or is loaded down with weight
When raindrops, snow, ice, road debris, or film/metal coatings are present on the
When there is a problem with the vehicle or if it is modified
millimeter-wave radar sensor or front glass
When driving on roads with a lot of traffic or around a sharp curve When driving in traffic conditions leading to frequent acceleration and deceleration
When driving on slippery road surfaces, such as on ice or snow When leaving your lane while on an expressway, etc.
When driving on steep/short inclines and downhill slopes When exiting from, or when entering or merging onto a freeway
When the warning tone sounds frequently When the camera and radar are misaligned
This section is abbreviated and does not include all precautions or limitations.
Refer to a Lexus Owner's Manual for a more comprehensive description of system operation, precautions and limitations.
8
LEXUS SAFETY SYSTEM+ 2.0
Features, Operation, Setting Adjustments, Limitations and Precautions
In the following conditions, Dynamic Radar Cruise Control6 may not be able to maintain appropriate distance between vehicles:
When the preceding vehicle is pulling an empty trailer, etc., making rear surface area When vehicle angle/stance is changed, for example if the vehicle is lifted or lowered, is
very small (including motorcycles) towing, or is loaded down with weight
When the preceding vehicle has an extremely high ground clearance When the vehicle speed returns to the set speed after accelerating
When driving on roads that have overhanging/covering structures, such as a tunnel or
When driving on curved or narrow roads
bridge
When the camera and radar are misaligned
In the following conditions, Dynamic Radar Cruise Control6 detection of the preceding vehicle may be delayed or may not be feasible:
When a preceding vehicle cuts in front of your vehicle at a close distance When the preceding vehicle is a motorcycle
When the camera and radar are misaligned
In the following conditions, Dynamic Radar Cruise Control6 may inadvertently operate or may not be able to detect the leading vehicle:
If a vehicle in another lane is interpreted as being in your lane when driving in a curved When the preceding vehicle is driving at the edge of the lane and is not in the detection
or narrow lane area
When the preceding vehicle leaves the sensor detection area, such as at a curve When the preceding vehicle leaves the sensor detection area due to steering input
When vehicle angle/stance is changed, for example if the vehicle is lifted or lowered, is
When the camera and radar are misaligned
towing, or is loaded down with weight
Dynamic Radar Cruise Control6 will not operate in the following conditions:
If the preceding object is a stopped vehicle or a preceding vehicle with a speed
dramatically slower than your own vehicle
PRECAUTIONS: LANE DEPARTURE ALERT
Lane Departure Alert3 operation is dependent on the in-vehicle camera's ability to see clearly and detect visible lane markers on relatively straight roadways, as well as the visibility
of the lane markers themselves. Lane Departure Alert does not operate if it cannot recognize visible lane markers. Situations such as a fogged, dirty, broken, or tinted windshield or
rain, snow, ice or sticker-covered windshield blocking the camera may affect Lane Departure Alert operation. Also, changes to the vehicle's height or angle from hauling heavy loads,
towing, suspension lowering/lifting, or tire modifications/chains may affect Lane Departure Alert operation. Furthermore, if lane markers cannot be correctly recognized, there are
cases where unneeded driver alerts may occur, so the driver needs to pay continuous attention to the surrounding conditions, the direction of travel and vehicle's location on the road.
Ultimately drivers are responsible for steering input and vehicle operation at all times. (NOTE: Vehicles equipped with Lexus Safety System+ 2.01 may also detect curbs and road
edges, in addition to lane markers.)
Lane Departure Alert3 may not operate as designed under the following conditions:
When vehicle angle/stance is changed, for example if the vehicle is lifted or lowered, is When approaching objects on the roadside that may be misunderstood as a white line,
towing, or is loaded down with weight such as a guard rail, curb, reflection pole, etc.
When there is a problem with the vehicle or if it is modified When driving at a branching or merging road location
When driving in inclement weather such as rain, fog, snow, dust storm, etc. blocking When driving around locations with sharp curves or undulations or for a period of time
camera visibility or lane marker visibility after turning due to camera recognition
This section is abbreviated and does not include all precautions or limitations.
Refer to a Lexus Owner's Manual for a more comprehensive description of system operation, precautions and limitations.
9LEXUS SAFETY SYSTEM+ 2.0
Features, Operation, Setting Adjustments, Limitations and Precautions
Lane Departure Alert3 operation may be reduced under the following conditions:
When approaching objects on the roadside that may be misunderstood as a white line,
When the camera and radar are misaligned
such as a guard rail, reflection pole, etc.
If the road surface is bright (strong light reflection), light (concrete), wet (rainy weather,
If there is not a clearly marked lane or clearly defined road edge
after rainfall, puddles, etc.)
Lane Departure Alert3 may stop temporarily under the following conditions:
When the camera is bathed in strong light (headlights from oncoming vehicle, sunlight,
When amount of light changes dramatically, such as at a tunnel exit/entrance
reflection from surrounding vehicles)
If the vehicle moves up and down (uneven/bumpy road) or when driving on slippery
roads where camera angle changes relative to the lane markers
Lane Departure Alert3 will not operate under the following conditions:
When driving too close to a preceding vehicle, blocking the camera from seeing the
If driving on an unpaved road
lane markers
If the windshield is fogged up
PRECAUTIONS: INTELLIGENT HIGH BEAMS
Intelligent High Beams4 operation is dependent on the in-vehicle camera's ability to see clearly and detect preceding headlights or taillights, as well as the visibility of the preceding
headlights or taillights themselves. Situations such as a fogged, dirty, broken, or tinted windshield or rain, snow, ice or sticker-covered windshield blocking the camera may affect
Intelligent High Beams operation. Drivers are responsible for paying attention to their surroundings and directly confirming the safety of their surroundings by turning high beams ON
and OFF manually as needed.
In the following conditions, the system many not be able to accurately detect surrounding vehicles and light:
When driving in inclement weather such as rain, fog, snow or a dust storm When driving on a road with frequent curves or when there is a sharp curve
When driving on a road that is uneven (rough roads such as stone paving, gravel road, If a vehicle in front is driving without lights, irregular lights, odd colored lights or where
unpaved road, etc.) the light axis is offset
When road conditions go up and down frequently When the windshield reflects something on the dashboard
When there is light similar to headlights or taillights in the vicinity If there is a vehicle in front with very dirty headlights or taillights
When surroundings become light and dark frequently When there is an object in front that strongly reflects light (mirror, sign, etc.)
When the vehicle is inclined front-to-back or side-to-side while driving (for example,
When there is a problem with the vehicle or if it is modified
uneven load or tire pressure, changes to suspension, when being towed)
PRECAUTIONS: ROAD SIGN ASSIST
Road Sign Assist7 operation is dependent on the in-vehicle camera's ability to see clearly and detect select preceding road signs, as well as the visibility of the select preceding road
signs themselves. Situations such as a fogged, dirty, broken or tinted windshield or rain, snow, ice or sticker-covered windshield blocking the camera may affect Road Sign Assist
operation. Drivers are responsible for paying attention to their surroundings and directly confirming the accuracy of posted road signs.
This section is abbreviated and does not include all precautions or limitations.
Refer to a Lexus Owner's Manual for a more comprehensive description of system operation, precautions and limitations.
10LEXUS SAFETY SYSTEM+ 2.0
Features, Operation, Setting Adjustments, Limitations and Precautions
In the following situations, the system may not activate or may show an incorrect display:
When vehicle angle/stance is changed, for example if the vehicle is lifted or lowered, is
When the camera and radar are misaligned
towing, or is loaded down with weight
When mud, snow, ice or sticker covers the windshield or windshield area is dirty or When driving in heavy rain, sticking snow, heavy fog or the splash from a preceding
fogged over vehicle
When driving around bright lights or strong reflections from signs, road surfaces or
When the sign is covered with dirt or a sticker, or is faded, rotated or bent
other vehicles, or oncoming headlights
When the sign is small or low contrast, especially if the sign is electronic or illuminated
When all or part of the sign is hidden by objects like vehicles, leaves, trees, poles, etc.
with non-uniform ambient light
When there is not enough time to recognize the sign due to high-speed driving When visibility is poor or there are drastic changes in brightness
When the sign is located in a ramp way or just after a turn/junction, too far offset or too
When a traffic sign sticker is placed on the back of a truck or vehicle
low, or posted beyond the intersection/corner
When an unknown sign has a shape or design that is very similar to a known sign When traveling between countries with different units or driving lanes
If there is a specific time associated with the displayed speed, such as school zones When there is a problem with the vehicle or if it is modified
PRECAUTIONS: LANE TRACING ASSIST
Lane Tracing Assist8 is a system that operates only when All-Speed Dynamic Radar Cruise Control6 and Lane Departure Alert3 are activated. The Lane Tracing Assist system is
designed for driving on expressways and highways. Lane Tracing Assist is not designed for, and should not be used in traffic conditions that are encountered when driving on roads
other than expressways and highways. Attentive and responsible driving is necessary even when Lane Tracing Assist is active, otherwise an accident may occur. Lane Tracing Assist
operation is dependent on the vehicles millimeter-wave radar's ability to detect a preceding vehicle as well as the in-vehicle camera's ability to see clearly and detect visible lane
markers on relatively straight roadways, as well as the visibility of the lane markers themselves. Lane Tracing Assist does not operate if it cannot recognize visible marked lanes or a
preceding vehicle. While driving, drivers need to continually pay attention to the distance between vehicles and surroundings, and decelerate or accelerate to ensure a safe distance
between their vehicle and preceding/following vehicles. Situations such as a fogged, dirty, broken, or tinted windshield or rain, snow, ice or sticker-covered windshield or anything
blocking the Lexus emblem radar sensor and/or the in-vehicle camera may affect Lane Tracing Assist operation. Also, changes to the vehicle's height or angle due to suspension or tire
modifications/chains may affect Lane Tracing Assist operation. Furthermore, if lane markers cannot be correctly recognized, there are cases where unneeded driver alerts may occur,
so drivers need to pay continuous attention to the surrounding conditions, the direction of travel, and the vehicle's location on the road. Ultimately, drivers are responsible for steering
input and vehicle operation at all times.
In the following conditions, Lane Tracing Assist8 may not operate as designed:
When vehicle angle/stance is changed, for example if the vehicle is lifted or lowered, is When the leading vehicle has a very small rear surface area, such as a vehicle pulling
towing, or is loaded down with weight an empty trailer
When driving in inclement weather such as rain, fog, snow, dust storm, etc. blocking When driving around locations with sharp curves or undulations or for a period of time
camera visibility or lane marker visibility after turning due to camera recognition
If a vehicle in another lane is interpreted as being in your lane when driving in a curved When the preceding vehicle is driving at the edge of the lane and is not in the detection
or narrow lane area
When leaving a lane while on an expressway, when exiting from a freeway, or when
When the camera and radar are misaligned
entering or merging onto a freeway
When the camera is bathed in strong light (headlights from oncoming vehicle, sunlight,
When amount of light changes dramatically, such as at a tunnel exit/entrance
reflection from surrounding vehicles)
When there are raindrops, snow, ice, road debris, or film/metal coatings on the
When the preceding vehicle leaves the sensor detection area due to steering input
millimeter-wave radar sensor or front glass
When driving on roads with a lot of traffic, curved or narrow roads, steep/short inclines When the road surface is bright (strong light reflection), light (concrete), wet (rainy
or downhill slopes weather, after rainfall, puddles, etc.)
When driving on slippery road surfaces, such as on ice or snow When there are traffic conditions leading to frequent acceleration and deceleration
This section is abbreviated and does not include all precautions or limitations.
Refer to a Lexus Owner's Manual for a more comprehensive description of system operation, precautions and limitations.
11LEXUS SAFETY SYSTEM+ 2.0
Features, Operation, Setting Adjustments, Limitations and Precautions
When approaching objects on the roadside that may be misunderstood as a white If the vehicle moves up and down (uneven/bumpy road) or when driving on slippery
line, such as a guard rail, curb, reflection pole, etc. roads where camera angle changes relative to the lane markers
When driving at a branching or merging road location When there is a problem with the vehicle or if it is modified
When the preceding vehicle has high ground clearance When the warning tone sounds frequently
When the preceding vehicle is a motorcycle When the vehicle speed returns to the set speed after accelerating
When driving on roads that have overhanging/covering structures, such as a tunnel or
When a preceding vehicle cuts in front of your vehicle at a close distance
bridge
Lane Tracing Assist8 will not operate under the following conditions:
When driving too close to a preceding vehicle, blocking the camera from seeing the
If driving on an unpaved road
lane markers
If the preceding object is a stopped vehicle or a preceding vehicle with a speed
If the windshield is fogged up
dramatically slower than your own vehicle
When vehicle angle/stance is changed, for example if the vehicle is lifted or lowered, is
When the camera and radar are misaligned
towing, or is loaded down with weight
1. Drivers are responsible for their own safe driving. Always pay attention to your surroundings and drive safely. System effectiveness is dependent on
many factors including road, weather and vehicle conditions. See Owner’s Manual for additional limitations and details. 2. The LSS Pre-Collision System
is designed to help avoid or reduce the crash speed and damage in certain frontal collisions only. It is not a substitute for safe and attentive driving. System
effectiveness is dependent on many factors including road, weather and vehicle conditions. See Owner’s Manual for additional limitations and details.
3. Lane Departure Alert with Steering Assist is designed to read visible lane markers under certain conditions. It provides a visual and audible alert and
slight steering force when lane departure is detected. It is not a collision-avoidance system or a substitute for safe and attentive driving. Effectiveness
is dependent on many factors including road, weather and vehicle conditions. See Owner’s Manual for additional limitations and details. 4. Intelligent
High Beams operate at speeds above 25 mph. Factors such as a dirty windshield, weather, lighting and terrain limit effectiveness requiring the driver to
manually operate the high beams. See Owner’s Manual for additional limitations and details. 5. The Pedestrian Detection System, part of the Advanced
Pre-Collision System, is designed to detect a pedestrian or bicyclist ahead of the vehicle, determine if impact is imminent and help reduce impact speed.
It is not a collision avoidance system and is not a substitute for safe and attentive driving. System effectiveness depends on many factors, such as speed,
size and position of pedestrian or bicyclist and weather, light and road conditions. See Owner's Manual for additional limitations and details. 6. Dynamic
Radar Cruise Control is designed to assist the driver and is not a substitute for safe and attentive driving practices. System effectiveness is dependent
on many factors including road, weather and traffic conditions. See Owner’s Manual for additional limitations and details. 7. Do not rely exclusively on
Road Sign Assist (RSA). RSA is a driver support system that utilizes the vehicle’s forward facing camera and navigation system (when data is available) to
recognize certain road signs and provide information to the driver via the multi-information display and/or Head-Up display. Effectiveness is dependent
on road, weather, vehicle and sign conditions. Use common sense when using RSA and do not drive distracted. See Owner’s Manual for additional
limitations and details. 8. Lane Tracing (Trace) Assist (LTA) is designed to read visible lane markers and detect other vehicles under certain conditions.
When potential lane departure is detected, LTA provides a visual warning and either an audible alert or vibration in the steering wheel and can apply
a slight steering force. It is not a collision-avoidance system or a substitute for safe and attentive driving. Effectiveness is dependent on many factors
including road, weather and vehicle conditions. See Owner’s Manual for additional limitations and details. 9. Brake Assist (BA) is designed to help the
driver take full advantage of the benefits of ABS. It is not a substitute for safe driving practices. Braking effectiveness also depends on proper vehicle
maintenance, tire and road conditions. See Owner’s Manual for additional limitations and details. 10. Automatic Braking is intended to assist a driver, but
it is the driver’s responsibility to be aware of the vehicle’s surroundings. The system cannot prevent all collisions, and performance is dependent on road,
weather, and vehicle conditions. See Owner’s Manual for additional limitations and details. 11. Lane Keep Assist is designed to read lane markers under
certain conditions. It provides a visual and audible alert and slight steering force when lane departure is detected. It is not a collision-avoidance system or
a substitute for safe and attentive driving. Effectiveness is dependent on road, weather and traffic conditions. See Owner’s Manual for additional limitations
and details 12. Vehicle Stability Control (VSC) is an electronic system designed to help the driver maintain vehicle control under adverse conditions. It is
not a substitute for safe and attentive driving practices. Factors including speed, road conditions, weather and driver steering input can all affect whether
VSC will be effective in preventing a loss of control. See Owner's Manual for additional limitations and details.
This section is abbreviated and does not include all precautions or limitations.
Refer to a Lexus Owner's Manual for a more comprehensive description of system operation, precautions and limitations.
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