Lexus NX250 (2022 year). Manual in english — page 21
WARNING
A
Radar sensor
B
Radar sensor cover
●
Do not attach accessories, stickers (including transparent stickers), aluminum tape,
etc. to a radar sensor or radar sensor cover and their surrounding area.
●
Do not subject a radar sensor or its surrounding area to impact.
●
If a radar sensor, the front grille, or front bumper has been subjected to a impact, have
the vehicle inspected by your Lexus dealer.
●
Do not disassemble the radar sensors.
●
Do not modify or paint the radar sensors or radar sensor cover, or replace them with
anything other than Lexus genuine parts.
●
In the following situations, recalibration of the radar sensors will be necessary.
Contact your Lexus dealer for details.
•
When a radar sensor is removed and installed, or replaced
•
When the front bumper or the front grille has been replaced
■
To prevent malfunction of the front camera
Observe the following precautions. Failure to do so may lead to the front camera not
operating properly, possibly leading to an accident resulting in death or serious injury.
●
Always keep the windshield clean.
•
If the windshield is dirty or covered with an oily film, water droplets, snow, etc., clean
the windshield.
•
Even if a glass coating agent is applied to the windshield, it will still be necessary
to use the windshield wipers to remove water droplets, etc. from the area of the
windshield in front of the front camera.
•
If the inner side of the windshield where the front camera is installed is dirty, contact
your Lexus dealer.
●
Do not attach stickers (including transparent stickers) or other items to the area of the
windshield in front of the front camera (shaded area in the illustration).
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WARNING
A
Approximately 1.6 in. (4cm)
B
Approximately 1.6 in. (4cm)
●
If the part of the windshield in front of the front camera is fogged up or covered with
condensation or ice, use the windshield defogger to remove the fog, condensation, or
ice.
●
If water droplets cannot be properly removed from the area of the windshield in front
of the front camera by the windshield wipers, replace the wiper insert or wiper blade.
●
Do not attach window tint to the windshield.
●
Replace the windshield if it is damaged or cracked.
If the windshield has been replaced, recalibration of the front camera will be necessa-
ry.
Contact your Lexus dealer for details.
●
Do not allow liquids to contact the front camera.
●
Do not allow bright lights to shine into the front camera.
●
Do not damage the lens of the front camera or allow it to become dirty.
When cleaning the inside of the windshield, do not allow glass cleaner to contact the
lens of the front camera. Do not touch the lens of the front camera.
If the lens of the front camera is dirty or damaged, contact your Lexus dealer.
●
Do not subject the front camera to a strong impact.
●
Do not change the position or orientation of the front camera or remove it.
●
Do not disassemble the front camera.
●
Do not modify any parts around the front camera, such as the inside rear view mirror
or ceiling.
●
Do not attach accessories which may obstruct the front camera to the hood, front
grille, or front bumper.
Contact your Lexus dealer for details.
●
If a surfboard or other long object is to be mounted on the roof, make sure that it will
not obstruct the front camera.
●
Do not modify or change the headlights and other lights.
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WARNING
■
Front camera installation area on the windshield
If the system determines that the windshield may be fogged up, it will automatically
operate the heater to defog the part of the windshield around the front camera. When
cleaning, etc., be careful not to touch the area around the front camera until the wind-
shield has cooled sufficiently, as touching it may cause burns.
INFORMATION
■
Situations in which the sensors may not operate properly
●
When the height or inclination of the vehicle has been changed due to modifications
●
When the windshield is dirty, fogged up, cracked or damaged
●
When a sensor is extremely hot
●
When mud, water, snow, dead insects, foreign matter, etc., is attached to the front of
the sensor
●
When in inclement weather such as heavy rain, fog, snow, or a sandstorm
●
When water, snow, dust, etc. is thrown up in front of the vehicle, or when driving
through mist or smoke
●
When the headlights are not illuminated while driving in the dark, such as at night or
when in a tunnel
●
When the lens of a headlight is dirty and illumination is weak
●
When the headlights are misaligned
●
When a headlight is malfunctioning
●
When a the headlights of another vehicle, sunlight, or reflected light shines directly
into the front camera
●
When the brightness of the surrounding area changes suddenly
●
When driving near a TV tower, broadcasting station, electric power plant, radar
equipped vehicles, etc., or other location where strong radio waves or electrical noise
may be present
●
When a wiper blade is blocking the front camera
●
When in a location or near objects which strongly reflect radio waves, such as the
following:
•
Tunnels
•
Truss bridges
•
Gravel roads
•
Rutted, snow-covered roads
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•
Walls
•
Large trucks
•
Manhole covers
•
Metal plates
•
Guardrail
●
When near a step or protrusion
●
When a detectable vehicle is narrow, such as a small mobility vehicle
●
When a detectable vehicle has a small front or rear end, such as an unloaded truck
●
When a detectable vehicle has a low front or rear
end, such as a low bed trailer
●
When a detectable vehicle has extremely high
ground clearance
●
When a detectable vehicle is carrying a load which protrudes from its cargo area
●
When a detectable vehicle has little exposed metal, such as a vehicle which is partially
covered with cloth, etc.
●
When a detectable vehicle is irregularly shaped, such as a tractor, sidecar, etc.
●
When the distance between the vehicle and a detectable vehicle has become ex-
tremely short
●
When a detectable vehicle is at an angle
●
When a large amount of snow, mud, etc. is attached to a detectable vehicle
●
When driving on the following kinds of roads:
•
Roads with sharp curves or winding roads
•
Roads with changes in grade, such as sudden inclines or declines
•
Roads which is sloped to the left or right
•
Roads with deep ruts
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•
Roads which are rough and unmaintained
•
Roads which frequently undulate or are bumpy
●
When the steering wheel is being operated frequently or suddenly
●
When the vehicle is not in a constant position within a lane
●
When parts related to this system, the brakes, etc. are extremely hot or cold, wet, etc.
●
When the wheels are misaligned
●
When driving on slick road surfaces, such as when it is covered with ice, snow, gravel,
etc.
●
When the course of the vehicle differs from the shape of a curve
●
When the vehicle speed is excessively high when entering a curve
●
When entering/exiting a parking lot, garage, car elevator, etc.
●
When driving in a parking lot
●
When driving through an area where there are obstructions which may contact your
vehicle, such as tall grass, tree branches, a curtain, etc.
■
Situations in which the lane may not be detected
●
When the lane is extremely wide or narrow
●
Immediately after changing lanes or passing through an intersection
●
When driving in a temporary lane or lane regulated by construction
●
When there are structures, patterns, shadows which are similar to lane lines in the
surrounding
●
When the lane lines are not clear or driving on a wet road surface
●
When a lane line is on a curb
●
When driving on a bright, reflective road surface, such as concrete
■
Situations in which some or all of the functions of the system cannot operate
●
When a malfunction is detected in this system or a related system, such as the brakes,
steering, etc.
●
When the VSC, TRAC, or other safety related system is operating
●
When the VSC, TRAC, or other safety related system is off
■
Changes in brake operation sound and pedal response
●
When the brakes have been operated, brake operation sounds may be heard and the
brake pedal response may change, but this does not indicate a malfunction.
●
When the system is operating, the brake pedal may feel stiffer than expected or sink.
In either situation the brake pedal can be depressed further. Further depress the brake
pedal as necessary.
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356
Driving assist systems
To keep driving safety and performance, the following systems operate automat-
ically in response to various driving situations. Be aware, however, that these
systems are supplementary and should not be relied upon too heavily when
operating the vehicle.
■
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 braking 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.
■
Enhanced VSC (Enhanced Vehicle Stability Control)
Provides cooperative control of the ABS, TRAC, VSC and EPS.
Helps to maintain directional stability when swerving on slippery road surfaces by
controlling steering performance.
■
Trailer Sway Control
Helps the driver to control trailer sway by selectively applying brake pressure for
individual wheels and reducing driving torque when trailer sway is detected.
■
TRAC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from spinning when
starting the vehicle or accelerating on slippery roads
■
Active Cornering Assist (ACA)
Helps to prevent the vehicle from drifting to the outer side by performing inner
wheel brake control when attempting to accelerate while turning.
■
Hill-start assist control
Helps to reduce the backward movement of the vehicle when starting on an uphill.
■
VGRS (Variable Gear Ratio Steering)
Adjusts the front wheel turning angle in accordance with the vehicle speed and
steering wheel movement.
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■
EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn the
steering wheel.
■
Dynamic Torque Control AWD system (NX250: AWD models)
Automatically controls the drive system such as to front-wheel drive or AWD (all
wheel drive) according to various running conditions including normal driving,
during cornering, on a uphill, when starting off, during acceleration, on a slippery
roads due to snow or rain, thus contributing to stable operability and driving
stability.
■
Adaptive Variable Suspension System
By independently controlling the damping force of the shock absorbers for each of
the 4 wheels according to the road and driving conditions, this system helps riding
comfort with superior vehicle stability, and helps good vehicle posture.
Also, the damping force changes depending on the selected driving mode.
■
The Secondary Collision Brake
When the SRS airbag sensor detects a collision and the system operates, the
brakes and brake lights are automatically controlled to reduce the vehicle speed
and help reduce the possibility of further damage due to a secondary collision.
INFORMATION
■
When the TRAC/VSC/Trailer Sway Control systems are operating
The slip indicator light will flash while the
TRAC/VSC/Trailer Sway Control systems are oper-
ating.
■
Disabling the TRAC system
If the vehicle gets stuck in mud, dirt or snow, the TRAC system may reduce power from
the engine to the wheels. Pressing [
] to turn the system off may make it easier for
you to rock the vehicle in order to free it.
* :
If equipped
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To turn the TRAC system off, quickly press and release[
].
The "Traction Control Turned OFF"will be shown on the multi-information display. Press
[
] again to turn the system back on.
■
Turning off both TRAC, VSC and Trailer Sway Control systems
To turn the TRAC, VSC and Trailer Sway Control systems off, press and hold [
]
for more than 3 seconds while the vehicle is stopped.
The VSC OFF indicator light will come on and the "Traction Control Turned OFF" will be
shown on the multi-information display. Press
again to turn the system back on.
■
When the message is displayed on the multi-information display showing that TRAC
has been disabled even if [
] has not been pressed
TRAC is temporary deactivated.
If the information continues to show, contact your Lexus dealer.
■
Operating conditions of hill-start assist control
When the following four conditions are met, the hill-start assist control will operate:
●
The shift position is in a position other than P or N (when starting off forward/back-
ward on an upward incline)
●
The vehicle is stopped
●
The accelerator pedal is not depressed
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●
The parking brake is not engaged
●
Engine switch is turned to ON
■
Automatic system cancelation of hill-start assist control
The hill-start assist control will turn off in any of the following situations:
●
The shift position is shifted to P or N
●
The accelerator pedal is depressed
●
The parking brake is engaged
●
2 seconds at maximum elapsed after the brake pedal is released
●
Engine switch is turned to OFF
■
VGRS is disabled when
VGRS may stop operating in the following situations. In this event, the steering wheel may
move from its straight forward position, but it will return when the system restarts.
●
When the steering wheel is operated for an extended period of time while the vehicle
is stopped or is moving very slowly
●
When the steering wheel has been held fully to the left or right
The center position of the steering wheel may change when VGRS is disabled. However,
the position will return to normal after VGRS is reactivated.
■
Sounds and vibrations caused by the ABS, brake assist, VSC, Trailer Sway Control,
TRAC and hill-start assist control systems
●
A sound may be heard from the engine compartment when the brake pedal is
depressed repeatedly, when the engine is started or just after the vehicle begins to
move. This sound does not indicate that a malfunction has occurred in any of these
systems.
●
Any of the following conditions may occur when the above systems are operating.
None of these indicates that a malfunction has occurred.
•
Vibrations may be felt through the vehicle body and steering.
•
A motor sound may be heard also after the vehicle comes to a stop.
•
The brake pedal may pulsate slightly after the ABS is activated.
•
The brake pedal may move down slightly after the ABS is activated.
■
Active Cornering Assist operation sounds and vibrations
When the Active Cornering Assist is operated, operation sounds and vibrations may be
generated from the brake system, but this is not a malfunction.
■
EPS and VGRS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be heard. This
does not indicate a malfunction.
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■
Automatic reactivation of TRAC, Trailer Sway Control and VSC systems
After turning the TRAC, Trailer Sway Control and VSC systems off, the systems will be
automatically re-enabled in the following situations:
●
When the engine switch is turned off
●
If only the TRAC system is turned off, the TRAC will turn on when vehicle speed
increases
If both the TRAC and VSC systems are turned off, automatic re-enabling will not
occur when vehicle speed increases.
■
Operating conditions of Active Cornering Assist
The system operates when the following occurs.
●
TRAC/VSC can operate
●
The driver is attempting to accelerate while turning
●
The system detects that the vehicle is drifting to the outer side
●
The brake pedal is released
■
Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from overheating
when there is frequent steering input over an extended period of time. The steering wheel
may feel heavy as a result.
Should this occur, refrain from excessive steering input or stop the vehicle and turn the
engine off. The EPS system should return to normal within 10 minutes.
■
Secondary Collision Brake operating conditions
The system operates when the SRS airbag sensor detects a collision while the vehicle is in
motion. However, the system does not operate in any of the following situations.
■
Secondary Collision Brake automatic cancelation
The system is automatically canceled in any of the following situations.
●
The vehicle speed drops to approximately 0 mph (0 km/h).
●
A certain amount of time elapses during operation
●
The accelerator pedal is depressed a large amount
WARNING
■
The ABS does not operate effectively when
●
The limits of tire gripping performance have been exceeded (such as excessively worn
tires on a snow covered road).
●
The vehicle hydroplanes while driving at high speed on wet or slick roads.
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WARNING
■
Stopping distance when the ABS is operating may exceed that of normal conditions
The ABS is not designed to shorten the vehicle's stopping distance. Always maintain a
safe distance from the vehicle in front of you, especially in the following situations:
●
When driving on dirt, gravel or snow-covered roads
●
When driving with tire chains
●
When driving over bumps in the road
●
When driving over roads with potholes or uneven surfaces
■
TRAC/VSC may not operate effectively when
Directional control and power may not be achievable while driving on slippery road
surfaces, even if the TRAC/VSC system is operating. Drive the vehicle carefully in
conditions where stability and power may be lost.
■
Active Cornering Assist does not operate effectively when
●
Do not overly rely on Active Cornering Assist. Active Cornering Assist may not oper-
ate effectively when accelerating down slopes or driving on slippery road surfaces.
●
When Active Cornering Assist frequently operates, Active Cornering Assist may
temporarily stop operating to ensure proper operation of the brakes, TRAC and VSC.
■
Hill-start assist control does not operate effectively when
●
Do not overly rely on hill-start assist control. Hill-start assist control may not operate
effectively on steep inclines and roads covered with ice.
●
Unlike the parking brake, hill-start assist control is not intended to hold the vehicle
stationary for an extended period of time. Do not attempt to use hill-start assist control
to hold the vehicle on an incline, as doing so may lead to an accident.
■
When the TRAC/VSC/Trailer Sway Control is activated
The slip indicator light flashes. Always drive carefully. Reckless driving may cause an
accident. Exercise particular care when the indicator light flashes.
■
When the TRAC/VSC/Trailer Sway Control systems are turned off
Be especially careful and drive at a speed appropriate to the road conditions.
As these are the systems to help ensure vehicle stability and driving force, do not turn the
TRAC/VSC/Trailer Sway Control systems off unless necessary.
Trailer Sway Control is part of the VSC system and will not operate if VSC is turned off or
experiences a malfunction.
■
Replacing tires
Make sure that all tires are of the specified size, brand, tread pattern and total load
capacity. In addition, make sure that the tires are inflated to the recommended tire
inflation pressure level.
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WARNING
The ABS, TRAC and VSC systems will not function correctly if different tires are installed
on the vehicle.
Contact your Lexus dealer for further information when replacing tires or wheels.
■
Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspension will affect the driving
assist systems, and may cause a system to malfunction.
■
Trailer Sway Control precaution
The Trailer Sway Control system is not able to reduce trailer sway in all situations.
Depending on many factors such as the conditions of the vehicle, trailer, road surface and
driving environment, the Trailer Sway Control system may not be effective. Refer to your
trailer owner's manual for information on how to tow your trailer properly.
■
If trailer sway occurs
Observe the following precautions. Failing to do so may cause death or serious injury.
●
Firmly grip the steering wheel. Steer straight ahead. Do not try to control trailer sway
by turning the steering wheel.
●
Begin releasing the accelerator pedal immediately but very gradually to reduce speed.
Do not increase speed. Do not apply vehicle brakes.
If you make no extreme correction with the steering or brakes, your vehicle and trailer
should stabilize.
■
Secondary Collision Brake
Do not rely solely upon the Secondary Collision Brake. This system is designed to help
reduce the possibility of further damage due to a secondary collision, however, that effect
changes according to various conditions. Overly relying on the system may result in
death or serious injury.
Related Links
Trailer towing (vehicles with towing package)(P. 104)
Tires and wheels(P. 684)
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Using the safe driving support functions
Pre-Collision System
PCS (Pre-Collision System)
The pre-collision system uses sensors to detect objects
in the path of
the vehicle. When the system determines that the possibility of a frontal collision
with a detectable object 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 possibility of a collision 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 disabled/enabled and the warning timing can be changed.
WARNING
■
For safe use
●
Driving safely is solely the responsibility of the driver. Pay careful attention to the
surrounding conditions in order to ensure safe driving. Never use the pre-collision
system in place of normal braking operations. This system cannot help avoid or reduce
the impact of a collision in every situation. Over-reliance on this system to drive the
vehicle safely may lead to an accident resulting in death or serious injury.
●
Although the pre-collision system is designed to help avoid or help reduce the impact
of a collision, its effectiveness may change according to various conditions. Therefore,
it may not always be able to achieve the same level of performance. Read the following
items carefully. Do not overly rely on this system and always drive carefully.
•
For safe use:
■
When to disable the pre-collision system
●
When it is necessary to disable the system:
Detectable objects
The system can detect the following as detectable objects. (Detectable objects
differ depending on the function.)
●
Vehicles
●
Bicycles
●
Pedestrians
●
Motorcycles
*1 :
Detected as a detectable object only when being ridden.
6-2. Using the safe driving support functions
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System functions
■
Pre-collision warning
When the system determines that the possibility
of a collision is high, a buzzer will sound and an
icon and warning message will be displayed on
the multi-information display to urge the driver to
take evasive action.
If the detectable object is a vehicle, moderate
braking will be performed with the warning.
If the system determines that the accelerator
pedal is strongly depressed, the following icon
and message will be displayed on the multi-infor-
mation display.
■
Pre-collision brake assist
If the system determines that the possibility of a collision is high and the brake
operation by the driver is insufficient, the braking power will be increased.
■
Pre-collision brake control
If the system determines that the possibility of a collision is extremely high, the
brakes are automatically applied to help avoid the collision or reduce the impact of
the collision.
If the vehicle is stopped by pre-collision brake control, it will remain stopped until
the brake pedal is depressed.
■
Emergency steering assist
If the system determines that the following con-
ditions are met, assistance will be provided to
help enhance vehicle stability and prevent lane
departure. During assistance, in addition to the
pre-collision warning, the following icon will be
displayed on the multi-information display.
●
The possibility of a collision is high
●
There is sufficient space within the lane to perform evasive steering maneuvers
●
The driver is operating the steering wheel
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Vehicles with active steering function: The brakes and steering are controlled to
help avoid a collision or reduce the impact of a collision, regardless of the evasive
steering maneuvers performed by the driver.
During assistance, the pre-collision warning will operate and a message will be
displayed to warn the driver.
■
Intersection collision avoidance support (left/right turn)
In situations such as the following, if the system determines that the possibility of
a collision is high, the pre-collision warning and pre-collision braking will operate.
Depending on the intersection, assistance may not operate correctly.
●
When turning left/right at an intersection and
crossing the path of an oncoming vehicle
●
When turning left/right and an oncoming pe-
destrian or bicycle is detected
■
Intersection collision avoidance support (crossing vehicles)
At an intersection, etc., if the system determines
that the possibility of a collision with an ap-
proaching vehicle or motorcycle is high, the
pre-collision warning and pre-collision braking
will operate. Depending on the intersection, as-
sistance may not operate correctly.
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■
Acceleration Suppression at Low Speed
When driving at a low speed, if the accelerator
pedal is strongly depressed and the system de-
termines that there is a possibility of a collision,
engine output will be restrained or the brakes will
be applied weakly to restrict acceleration. During
operation, a buzzer will sound and a warning
indicator and message will be displayed on the
multi-information display.
■
Suspension control
When the system determines that the possibility of a collision is high, the Adaptive
Variable Suspension system
controls the damping force of the shock
absorbers to help maintain an appropriate vehicle posture.
WARNING
■
Pre-collision braking
●
When the pre-collision braking function is operating, a large amount of braking force
will be applied.
●
If the vehicle is stopped by pre-collision braking function, the driver should operate the
brakes as necessary.
●
In the following situations, brake hold will not operate after the pre-collision braking
function has operated. Depending on the situation, the driver should operate the brake
pedal immediately.
•
When the accelerator pedal is depressed
•
When the vehicle is stopped by intersection collision avoidance support
•
When the vehicle is stopped on a steep slope
●
The pre-collision braking function may not operate if certain operations are per-
formed by the driver. If the accelerator pedal is being depressed strongly or the
steering wheel is being turned, the system may determine that the driver is taking
evasive action and possibly prevent the pre-collision braking function from operating.
●
If the brake pedal is being depressed, the system may determine that the driver is
taking evasive action and possibly delay the operation timing of the pre-collision brake
control.
■
Acceleration Suppression at Low Speed function
If the steering wheel is being turned, the system may determine that the driver is taking
evasive action and possibly prevent the Acceleration Suppression at Low Speed function
from operating.
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