Lexus NX350h (2022 year). Manual in english

■

VGRS (Variable Gear Ratio Steering)

Adjusts the front wheel turning angle in accordance with the vehicle speed and
steering wheel movement.

■

EPS (Electric Power Steering)

Employs an electric motor to reduce the amount of effort needed to turn the
steering wheel.

■

E-Four (Electronic On-Demand AWD system)

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.

■

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/ABS/Trailer Sway Control systems are operating

The slip indicator light will flash while the
TRAC/VSC/ABS/Trailer Sway Control systems are
operating.

■

Disabling the TRAC system

If the vehicle gets stuck in mud, dirt or snow, the TRAC system may reduce power from

the hybrid system to the wheels. Pressing [

] to turn the system off may make it

easier for you to rock the vehicle in order to free it.

To turn the TRAC system off, quickly press and release[

6-1. Features of the safe driving support functions

350

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

●

The parking brake is not engaged

●

Power switch is turned to ON

6-1. Features of the safe driving support functions

351

Driving suppor

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ystem

■

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

●

Power 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 hybrid system 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.

■

ECB operating sound

ECB operating sound may be heard in the following cases, but it does not indicate that a
malfunction has occurred.

●

Operating sound heard from the engine compartment when the brake pedal is
operated.

●

Motor sound of the brake system heard from the front part of the vehicle when the
driver’s door is opened.

●

Operating sound heard from the engine compartment when one or two minutes
passed after the stop of the hybrid system.

6-1. Features of the safe driving support functions

352

■

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.

■

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 power 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
hybrid system 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

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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.

■

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/ABS/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.

6-1. Features of the safe driving support functions

354

WARNING

■

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.
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.

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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

(

→

P.356)

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.

(

→

P.367)

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:

→

P.341

■

When to disable the pre-collision system

●

When it is necessary to disable the system:

→

P.341

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

356

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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ystem

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.

6-2. Using the safe driving support functions

358

■

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,
hybrid system output will be restrained or the
brakes will be applied weakly to restrict accelera-
tion. During operation, a buzzer will sound and a
warning indicator and message will be displayed
on the multi-information display.

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.

■

Emergency steering assist

●

The emergency steering assist will be canceled when the system determines that lane
departure prevention control has completed.

●

Depending on operations performed by the driver, emergency steering assist may not
operate or operation may be canceled.

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ystem

WARNING

•

If the accelerator pedal is depressed strongly, the steering wheel is turned heavily,
the brake pedal is depressed, or the turn signal lever is operated, the system may
determine that the driver is taking evasive action and the emergency steering assist
may not operate.

•

While the emergency steering assist is operating, if the accelerator pedal is
depressed strongly, the steering wheel is turned heavily, or the brake pedal is
depressed, the system may determine that the driver is taking evasive action and
emergency steering assist operation may be canceled.

•

While the emergency steering assist is operating, if the steering wheel is held or
turned in the opposite direction of system operation, emergency steering assist
operation will be canceled.

INFORMATION

■

Operating conditions of each function of the pre-collision system

The pre-collision system is enabled and the system determines that the possibility of a
frontal collision with a detected object is high.
However, the system will not operate in the following situations:

●

When the vehicle has not been driven a certain amount after a terminal of the 12-volt
battery has been disconnected and reconnected

●

When the shift position is in R

●

When the VSC OFF indicator is illuminated (only the pre-collision warning function
will be operational)

The following are the operational speeds and cancelation conditions of each function:

●

Pre-collision warning

Detectable ob-

jects

Vehicle speed

Relative speed between your

vehicle and object

Preceding vehi-
cles, stopped ve-
hicles

Approximately 3 to 110 mph
(5 to 180 km/h)

Approximately 3 to 110 mph (5
to 180 km/h)

Oncoming vehi-
cles

Approximately 20 to 110 mph
(30 to 180 km/h)

Approximately 50 to 130 mph
(80 to 220 km/h)

Bicycles

Approximately 3 to 50 mph
(5 to 80 km/h)

Approximately 3 to 50 mph (5
to 80 km/h)

Pedestrians

Approximately 3 to 50 mph
(5 to 80 km/h)

Approximately 3 to 50 mph (5
to 80 km/h)

6-2. Using the safe driving support functions

360

Detectable ob-

jects

Vehicle speed

Relative speed between your

vehicle and object

Preceding motor-
cycles, stopped
motorcycles

Approximately 3 to 110 mph
(5 to 180 km/h)

Approximately 3 to 50 mph (5
to 80 km/h)

Oncoming motor-
cycles

Approximately 20 to 110 mph
(30 to 180 km/h)

While the pre-collision warning is operating, if the steering wheel is operated heavily
or suddenly, the pre-collision warning may be cancelled.

●

Pre-collision brake assist

Detectable objects

Vehicle speed

Relative speed between your

vehicle and object

Preceding vehi-
cles, stopped vehi-
cles

Approximately 20 to 110
mph (30 to 180 km/h)

Approximately 7 to 110 mph (10
to 180 km/h)

Bicycles

Approximately 20 to 50
mph (30 to 80 km/h)

Approximately 20 to 50 mph
(30 to 80 km/h)

Pedestrians

Approximately 20 to 50
mph (30 to 80 km/h)

Approximately 20 to 50 mph
(30 to 80 km/h)

Preceding motor-
cycles, stopped
motorcycles

Approximately 20 to 110
mph (30 to 180 km/h)

Approximately 7 to 50 mph (10
to 80 km/h)

●

Pre-collision braking

Detectable ob-

jects

Vehicle speed

Relative speed between your

vehicle and object

Preceding vehi-
cles, stopped ve-
hicles

Approximately 3 to 110 mph
(5 to 180 km/h)

Approximately 3 to 110 mph (5
to 180 km/h)

Oncoming vehi-
cles

Approximately 20 to 110 mph
(30 to 180 km/h)

Approximately 50 to 130 mph
(80 to 220 km/h)

Bicycles

Approximately 3 to 50 mph
(5 to 80 km/h)

Approximately 3 to 50 mph (5
to 80 km/h)

Pedestrians

Approximately 3 to 50 mph
(5 to 80 km/h)

Approximately 3 to 50 mph (5
to 80 km/h)

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ystem

Detectable ob-

jects

Vehicle speed

Relative speed between your

vehicle and object

Preceding motor-
cycles, stopped
motorcycles

Approximately 3 to 110 mph
(5 to 180 km/h)

Approximately 3 to 50 mph (5
to 80 km/h)

Oncoming motor-
cycles

Approximately 20 to 110 mph
(30 to 180 km/h)

If either of the following occur while the pre-collision braking function is operating, it
will be canceled:

•

The accelerator pedal is strongly depressed

•

The steering wheel is operated heavily or suddenly

●

Emergency steering assist
The emergency steering assist will not operate when the turn signal lights are flashing.

Detectable objects

Vehicle speed

Relative speed between your

vehicle and object

Preceding vehicles,
stopped vehicles, bicy-
cles, pedestrians, mo-
torcycles

Approximately 25 to 50
mph (40 to 80 km/h)
Active steering function: *
to 50 mph (* to 80 km/h)

Approximately 25 to 50 mph
(40 to 80 km/h)
Active steering function: * to
50 mph (* to 80 km/h)

*Minimum vehicle speed: Vehicle speed at which evasion using pre-collision brake
control is difficult

While the emergency steering assist is operating, if any of the following are performed,
emergency steering assist operation may be cancelled:

•

The accelerator pedal is strongly depressed

•

The steering wheel is operated heavily or suddenly

•

The brake pedal is depressed

●

Intersection collision avoidance support (left/right turn)
The intersection collision avoidance support (for left/right turning vehicles) will not
operate when the turn signal lights are not flashing.

Detectable

objects

Vehicle speed

Oncoming vehi-

cle speed

Relative speed between

your vehicle and object

Oncoming
vehicles

Approximately 3 to 25
mph (5 to 40 km/h)

Approximately
3 to 45 mph (5
to 75 km/h)

Approximately 7 to 70
mph (10 to 115 km/h)

6-2. Using the safe driving support functions

362

Detectable

objects

Vehicle speed

Oncoming vehi-

cle speed

Relative speed between

your vehicle and object

Pedestrians

Approximately 3 to 20
mph (5 to 30 km/h)

Approximately 3 to 25
mph (5 to 40 km/h)

Bicycles

Approximately 3 to 20
mph (5 to 30 km/h

Approximately 3 to 30
mph (5 to 50 km/h)

Oncoming
motorcycles

Approximately 3 to 25
mph (5 to 40 km/h)

Approximately
3 to 45 mph (5
to 75 km/h)

Approximately 7 to 70
mph (10 to 115 km/h)

●

Intersection collision avoidance support (crossing vehicles)

Detecta-

ble objects

Vehicle speed

Crossing vehicle speed

Relative speed be-

tween your vehicle

and object

Vehicles
(side)

Approximately 3
to 38 mph (5 to
60 km/h)

●

Your vehicle speed or
less

●

Approximately 25 mph
or less (40 km/h or less)

Approximately 3 to
38 mph (5 to 60
km/h)

Motorcy-
cles (side)

Approximately 3
to 38 mph (5 to
60 km/h)

●

Your vehicle speed or
less

●

Approximately 25 mph
or less (40 km/h or less)

Approximately 3 to
38 mph (5 to 60
km/h)

●

Acceleration Suppression at Low Speed
The Acceleration Suppression at Low Speed function will not operate when the turn
signal lights are flashing.

Detectable ob-

jects

Vehicle speed

Relative speed between your ve-

hicle and object

Preceding vehi-
cles, stopped ve-
hicles

Approximately 0 to 9 mph (0
to 15 km/h)

Approximately 0 to 9 mph (0 to
15 km/h)

Bicycles

Approximately 0 to 9 mph (0
to 15 km/h)

Approximately 0 to 9 mph (0 to
15 km/h)

Pedestrians

Approximately 0 to 9 mph (0
to 15 km/h)

Approximately 0 to 9 mph (0 to
15 km/h)

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ystem

While the Acceleration Suppression at Low Speed function is operating, if any of
the following are performed, the low speed sudden acceleration suppression function
operation will be cancelled:

•

The accelerator pedal is released.

•

The steering wheel is operated heavily or suddenly

■

Detection of detectable objects

Objects are detected based on their size, shape, and
movement. Depending on the ambient brightness,
movement, posture and direction of a detectable ob-
ject, it may not be detected and the system may not
operate properly. The system detects shapes, such as
the following, as detectable objects.

■

Situations in which the system may operate even though the possibility of a collision
is not high

●

In certain situations, such as the following, the system may determine that the possibili-
ty of a collision is high and operate:

•

When passing a detectable object

•

When changing lanes while overtaking a detectable object

•

When suddenly approaching a detectable object

•

When approaching a detectable object or other object on the roadside, such as
guardrails, utility poles, trees, walls, etc.

•

When there is a detectable object or other ob-
ject by the roadside at the entrance of a curve

•

When there are patterns or a painting ahead of the vehicle that may be mistaken for
a detectable object

6-2. Using the safe driving support functions

364

•

When passing a detectable object that is
changing lanes or turning left/right

•

When passing a detectable object which is
stopped to make a left/right turn

•

When a detectable object stops immediately before entering the path of the vehicle

•

When passing through a location with a struc-
ture above the road (traffic sign, billboard, etc.)

•

When approaching an electric toll gate barrier, parking lot barrier, or other barrier
that opens and closes

•

When turning left/right and an oncoming vehicle or pedestrian crosses in front of
the vehicle

•

When attempting to turn left/right in front of an oncoming vehicle or pedestrian

•

When turning left/right and an oncoming vehicle or pedestrian stops immediately
before entering the path of the vehicle

•

When turning left/right and an oncoming vehi-
cle turns left/right in front of the vehicle

•

When the steering wheel is operated toward the path of an oncoming vehicle

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Lexus NX350h (2022 year). Manual in english - page 21