Lexus ES250 (2023 year). Manual in english — page 14
234
4-5. Using the driving support systems
Engine output
Braking force
Time
Engine output restriction control begins operating
System determines that possibility of collision with detected object is high
Engine output reduced
Example: Multi-information display:
“BRAKE!”
Figure 3 When brake control operates
Engine output
Braking force
A
B
C
D
E
F
G
A
B
235
4-5. Using the driving support systems
4
Driving
Time
Engine output restriction control begins operating
System determines that possibility of collision with detected object is high
Engine output reduced
System determines that possibility of collision with detected object is extremely
high
Brake control begins operating
Brake control strength increased
Example: Multi-information display: “BRAKE!”
Example: Multi-information display: “Switch to Brake”
■
If the Parking Support Brake has oper-
ated
If the vehicle is stopped due to operation of
the Parking Support Brake, the Parking
Support Brake will be disabled and the
PKSB OFF indicator will illuminate. If the
Parking Support Brake operates unneces-
sarily, brake control can be canceled by
depressing the brake pedal or waiting for
approximately 2 seconds for it to automati-
cally be canceled. Then, the vehicle can be
operated by depressing the accelerator
pedal.
■
Re-enabling the Parking Support Brake
To re-enable the Parking Support Brake
when it has been disabled due to system
operation, perform any of the following
operations. At this time, the PKSB OFF
indicator will turn off. (
●
Turn the PKSB system on (
●
Turn the engine switch off, and then back
to IGNITION ON mode
●
Shift the shift lever to P
●
Drive with no operation targets in the
traveling direction of the vehicle
●
Change the traveling direction of the
vehicle
*
*
: Except the Parking Support Brake func-
tion (rear pedestrian)
■
If “Parking Support Brake Unavailable”
is displayed on the multi-information
display and the PKSB OFF indicator is
flashing
If this message is displayed only when the
shift lever is in R, the rear camera lens may
be dirty. Clean the camera lens. If this mes-
sage is displayed when the shift lever is in
any position other than R, a sensor on the
front or rear bumper may be dirty. Clean
the sensors and their surrounding area on
the bumpers.
■
If “Parking Support Brake Unavailable”
and “Parking Assist Unavailable Clean
Parking Assist Sensor” are displayed on
the multi-information display and the
PKSB OFF indicator is flashing
●
A sensor may be covered with ice, snow,
dirt, etc. In this case, remove the ice,
snow, dirt, etc., from the sensor to return
the system to normal. If this message is
shown even after removing dirt from the
sensor, or shown when the sensor was
not dirty to begin with, have the vehicle
inspected at your Lexus dealer.
●
A sensor may be frozen. Once the ice
melts, the system will return to normal.
●
Water may be continuously flowing over
the sensor surface, such as in a heavy
rain. When the system determines that it
is normal, the system will return to nor-
mal.
C
D
E
F
G
H
I
J
K
236
4-5. Using the driving support systems
■
If a battery terminal has been discon-
nected and reconnected
The system needs to be initialized. To initial-
ize the system, drive the vehicle straight
ahead for 5 seconds or more at a speed of
approximately 22 mph (35 km/h) or more.
237
4-5. Using the driving support systems
4
Driving
*
: If equipped
This function will operate in situations such as the following if an object is detected
in the traveling direction of the vehicle.
■
When traveling at a low speed and the brake pedal is not depressed, or is
depressed late
Parking Support Brake function (static objects)
*
If the sensors detect a static object, such as a wall, in the traveling direction of
the vehicle and the system determines that a collision may occur due to the
vehicle suddenly moving forward due to an accidental accelerator pedal
operation, the vehicle moving the unintended direction due to the wrong shift
position being selected, or while parking or traveling at low speeds, the sys-
tem will operate to lessen the impact with the detected static object and
reduce the resulting damage.
Examples of function operation
238
4-5. Using the driving support systems
■
When the accelerator pedal is depressed excessively
■
When the vehicle moves in the unintended direction due to the wrong shift
position being selected
■
The Parking Support Brake function
(static object) will operate when
The function will operate when the PKSB
OFF indicator is not illuminated or flashing
Types of sensors
WARNING
■
To ensure the system can operate
properly
■
If the Parking Support Brake function
(static objects) operates unnecessar-
ily, such as at a railroad crossing
■
Notes when washing the vehicle
239
4-5. Using the driving support systems
4
Driving
(
P.65, 66) and all of the following condi-
tions are met:
●
Engine output restriction control
• The Parking Support Brake is enabled.
• The vehicle speed is approximately 9
mph (15 km/h) or less.
• There is a static object in the traveling
direction of the vehicle and approxi-
mately 6 to 13 ft. (2 to 4 m) away.
• The Parking Support Brake determines
that a stronger-than-normal brake oper-
ation is necessary to avoid a collision.
●
Brake control
• Engine output restriction control is oper-
ating.
• The Parking Support Brake determines
that an immediate brake operation is
necessary to avoid a collision.
■
The Parking Support Brake function
(static objects) will stop operating when
The function will stop operating if any of the
following conditions are met:
●
Engine output restriction control
• The Parking Support Brake is disabled.
• The system determines that the collision
has become avoidable with normal brake
operation.
• The static object is no longer approxi-
mately 6 to 13 ft. (2 to 4 m) away from the
vehicle or in the traveling direction of the
vehicle.
●
Brake control
• The Parking Support Brake is disabled.
• Approximately 2 seconds have elapsed
since the vehicle was stopped by brake
control.
• The brake pedal is depressed after the
vehicle is stopped by brake control.
• The static object is no longer approxi-
mately 6 to 13 ft. (2 to 4 m) away from the
vehicle or in the traveling direction of the
vehicle.
■
Detection range of the Parking Support
Brake function (static objects)
The detection range of the Parking Support
Brake function (static objects) differs from
the detection range of the intuitive parking
assist. (
P.218) Therefore, even if the intu-
itive parking assist detects an object and
provides a warning, the Parking Support
Brake function (static objects) may not start
operating.
■
Situations in which the Parking Support
Brake function (static objects) may not
operate
When the shift lever is in N.
■
Situations in which the system may not
operate properly
■
Situations in which the system may
operate even if there is no possibility of a
collision
240
4-5. Using the driving support systems
*
: If equipped
This function will operate in situations such as the following if a vehicle is detected
in the traveling direction of the vehicle.
■
When reversing, a vehicle is approaching and the brake pedal is not
depressed, or is depressed late
■
The Parking Support Brake function
(rear-crossing vehicles) will operate
when
The function will operate when the PKSB
OFF indicator is not illuminated or flashing
(
P.65, 66) and all of the following condi-
tions are met:
●
Engine output restriction control
• The Parking Support Brake is enabled.
• The vehicle speed is approximately 9
mph (15 km/h) or less.
• Vehicles are approaching from the right
or left at the rear of the vehicle at a travel-
ing speed of approximately 5 mph (8
Parking Support Brake function (rear-crossing vehicles)
*
If a rear radar sensor detects a vehicle approaching from the right or left at
the rear of the vehicle and the system determines that the possibility of a colli-
sion is high, this function will perform brake control to reduce the likelihood of
an impact with the approaching vehicle.
Examples of function operation
Types of sensors
WARNING
■
To ensure the system can operate
properly
241
4-5. Using the driving support systems
4
Driving
km/h) or more.
• The shift lever is in R.
• The Parking Support Brake determines
that a stronger than normal brake opera-
tion is necessary to avoid a collision with
an approaching vehicle.
●
Brake control
• Engine output restriction control is oper-
ating.
• The Parking Support Brake determines
that an emergency brake operation is
necessary to avoid a collision with an
approaching vehicle.
■
The Parking Support Brake function
(rear-crossing vehicles) will stop oper-
ating when
The function will stop operating if any of the
following conditions are met:
●
Engine output restriction control
• The Parking Support Brake is disabled.
• The collision becomes avoidable with
normal brake operation.
• A vehicle is no longer approaching from
the right or left at the rear of the vehicle.
●
Brake control
• The Parking Support Brake is disabled.
• Approximately 2 seconds have elapsed
since the vehicle was stopped by brake
control.
• The brake pedal is depressed after the
vehicle is stopped by brake control.
• A vehicle is no longer approaching from
the right or left at the rear of the vehicle.
■
Detection area of the Parking Support
Brake function (rear-crossing vehicles)
The detection area of the Parking Support
Brake function (rear-crossing vehicles) dif-
fers from the detection area of the RCTA
function (
P.223). Therefore, even if the
RCTA function detects a vehicle and pro-
vides an alert, the Parking Support Brake
function (rear-crossing vehicles) may not
start operating.
■
Situations in which the system may not
operate properly
■
Situations in which the system may
operate even if there is no possibility of a
collision
242
4-5. Using the driving support systems
*
: If equipped
When a pedestrian is detected behind the vehicle while backing up, the brake
pedal is not depressed or is depressed late.
A message to urge the driver to take
evasive action is automatically dis-
played on the Center Display when a
pedestrian is detected in the detection
area behind the vehicle.
Pedestrian detection icon
“BRAKE!”
Parking Support Brake function (rear pedestrians)
*
If the rear camera sensor detects a pedestrian behind the vehicle while back-
ing up and the system determines that the possibility of colliding with the
detected pedestrian is high, a buzzer will sound. If the system determines that
the possibility of colliding with the detected pedestrian is extremely high, the
brakes will be applied automatically to help reduce the impact of the collision.
Examples of system operation
Display of rear pedestrians
A
B
243
4-5. Using the driving support systems
4
Driving
■
Parking Support Brake function (rear
pedestrians) will operate when
The function will operate when the PKSB
OFF indicator is not illuminated or flashing
(
P.65, 66) and all of the following condi-
tions are met:
●
Engine output restriction control
• The Parking Support Brake is enabled.
• The vehicle speed is 9 mph (15 km/h) or
less.
• The shift lever is in R.
• A pedestrian is at the rear of the vehicle.
• The PKSB (Parking Support Brake)
determines that a stronger-than-normal
brake operation is necessary to avoid a
collision.
●
Brake control
• Engine output restriction control is oper-
ating.
• The Parking Support Brake determines
that an emergency brake operation is
necessary to avoid a collision with a
pedestrian.
■
The Parking Support Brake function
(rear pedestrians) will stop operating
when
The function will stop operating if any of the
following conditions are met:
●
Engine output restriction control
• The Parking Support Brake is disabled.
• The collision becomes avoidable with
normal brake operation.
• The pedestrian is no longer detected
behind your vehicle.
●
Brake control
• The Parking Support Brake is disabled.
• Approximately 2 seconds have elapsed
since the vehicle was stopped by brake
control.
• The brake pedal is depressed after the
vehicle is stopped by brake control.
■
Re-enabling the Parking Support Brake
function (rear pedestrians)
■
Detection area of the Parking Support
Brake function (rear pedestrians)
The detection area of the Parking Support
Brake function (rear pedestrians) differs
from the detection area of the RCD func-
tion (
P.228). Therefore, even if the RCD
function detects a pedestrian and provides
an alert, the Parking Support Brake func-
tion (rear pedestrians) may not start operat-
ing.
■
Situations in which the system may not
operate properly
■
Situations in which the system may
operate unexpectedly
WARNING
■
If the Parking Support Brake function
(rear pedestrians) operates unneces-
sarily
Depress the brake pedal immediately
after the Parking Support Brake function
(rear pedestrians) operates. (Operation
of the function is canceled by depressing
the brake pedal.)
■
Correct use of the Parking Support
Brake function (rear pedestrians)
244
4-5. Using the driving support systems
■
ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the
brakes are applied suddenly, or if the
brakes are applied while driving on a
slippery road surface
■
Brake assist
Generates an increased level of brak-
ing force after the brake pedal is
depressed when the system detects a
panic stop situation
■
VSC (Vehicle Stability Control)
Helps the driver to control skidding
when swerving suddenly or turning on
slippery road surfaces.
■
Enhanced VSC (Enhanced Vehi-
cle Stability Control)
Provides cooperative control of the
ABS, TRAC, VSC and EPS.
Helps to maintain directional stability
when swerving on slippery road sur-
faces by controlling steering perfor-
mance.
■
Secondary Collision Brake
When the SRS airbag sensor detects a
collision and the system operates, the
brakes and brake lights are automati-
cally controlled to reduce the vehicle
speed and help reduce the possibility
of further damage due to a secondary
collision.
■
TRAC (Traction Control)
Helps to maintain drive power and
prevent the drive wheels from spinning
when starting the vehicle or accelerat-
ing on slippery roads
■
Active Cornering Assist (ACA)
Helps to prevent the vehicle from drift-
ing 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 move-
ment of the vehicle when starting on an
uphill
■
Dynamic Torque Control AWD
system (AWD models)
Automatically switches from front-
wheel drive to all-wheel drive (AWD)
according to the driving conditions,
helping to ensure reliable handling and
stability. Examples of conditions where
the system will switch to AWD are
when cornering, going uphill, starting
off or accelerating, and when the road
surface is slippery due to snow, rain,
etc.
■
EPS (Electric Power Steering)
Employs an electric motor to reduce
the amount of effort needed to turn the
Driving assist systems
To keep driving safety and perfor-
mance, the following systems oper-
ate automatically in response to
various driving situations. Be
aware, however, that these systems
are supplementary and should not
be relied upon too heavily when
operating the vehicle.
Summary of the driving assist
systems
245
4-5. Using the driving support systems
4
Driving
steering wheel
■
AVS (Adaptive Variable Suspen-
sion System) (if equipped)
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 supe-
rior vehicle stability, and helps good
vehicle posture.
Also, the damping force changes
depending on the selected driving
mode. (
■
When the TRAC/VSC systems are
operating
The slip indicator light will flash while the
TRAC/VSC 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 engine to the wheels. Pressing the
switch 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 the
switch.
The “Traction Control Turned Off” will be
shown on the multi-information display.
Press the
switch again to turn the
system back on.
■
Turning off both TRAC and VSC sys-
tems
To turn the TRAC and VSC systems off,
press and hold the
switch 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 the
switch again to turn the
system back on.
*
: PCS (Pre-Collision System) will also be
disabled (only Pre-Collision warning is
available). The PCS warning light will
come on and a message will be displayed
on the multi-information display.
(
■
When the message is displayed on the
multi-information display showing that
TRAC has been disabled even if the
switch 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 all of the following conditions are
met, the hill-start assist control will operate:
●
The shift lever 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.
246
4-5. Using the driving support systems
■
Automatic system cancelation of hill-
start assist control
The hill-start assist control will turn off in any
of the following situations:
●
The shift lever 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.
■
Sounds and vibrations caused by the
ABS, brake assist, VSC, 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 oper-
ating. None of these indicates that a mal-
function has occurred.
• Vibrations may be felt through the vehi-
cle 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 oper-
ated, operation sounds and vibrations may
be generated from the brake system, but
this is not a malfunction.
■
Automatic reactivation of TRAC and
VSC systems
After turning the TRAC 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.
■
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
when the components are damaged.
■
Secondary Collision Brake automatic
cancellation
The system is automatically canceled in any
of the following situations.
●
The vehicle speed drops to approxi-
mately 6 mph (10 km/h)
●
A certain amount of time elapses during
operation
●
The accelerator pedal is depressed a
large amount
■
Operating conditions of Active Corner-
ing 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 sys-
tem
The effectiveness of the EPS system is
reduced to prevent the system from over-
heating 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.
■
If a message about AWD is shown on the multi-information display
Perform the following actions.
247
4-5. Using the driving support systems
4
Driving
Message
Details/Actions
“AWD System Overheated
Switching to 2WD Mode”
AWD system is overheating.
Perform the following actions.
Reduce the vehicle speed until the message disappears.
Stop the vehicle in a safe place and let the engine idle.
Once the display message on the multi-information display
turns off, there is no problem continuing to drive.
If the message does not disappear, have your vehicle
checked by your Lexus dealer immediately.
“AWD System Overheated
2WD Mode Engaged”
The vehicle switched from all-wheel drive (AWD) to front
wheel drive due to overheating.
Perform the following actions.
Reduce the vehicle speed until the message disappears.
Stop the vehicle in a safe place and let the engine idle.
Once the display message on the multi-information display
turns off, the AWD system returns to normal.
If the message does not disappear, have your vehicle
checked by your Lexus dealer immediately.
“AWD System Malfunction
2WD Mode Engaged Visit
Your Dealer”
A malfunction occurred in the AWD system.
Have your vehicle checked by your Lexus dealer imme-
diately.
WARNING
■
The ABS does not operate effectively
when
●
The limits of tire gripping performance
have been exceeded (such as exces-
sively 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 pot-
holes or uneven surfaces
■
TRAC/VSC may not operate effec-
tively 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.
248
4-5. Using the driving support systems
WARNING
■
Active Cornering Assist does not
operate effectively when
●
Do not overly rely on Active Corner-
ing Assist. Active Cornering Assist
may not operate effectively when
accelerating down slopes or driving on
slippery road surfaces.
●
When Active Cornering Assist fre-
quently operates, Active Cornering
Assist may temporarily stop operating
to ensure proper operation of the
brakes, TRAC and VSC.
■
Hill-start assist control does not oper-
ate 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 vehi-
cle on an incline, as doing so may lead
to an accident.
■
When the TRAC/VSC 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 systems are
turned off
Be especially careful and drive at a
speed appropriate to the road condi-
tions. As these are the systems to help
ensure vehicle stability and driving force,
do not turn the TRAC/VSC systems off
unless necessary.
■
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.
■
Replacing tires
Make sure that all tires are of the speci-
fied size, brand, tread pattern and total
load capacity. In addition, make sure that
the tires are inflated to the recom-
mended 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.
249
4-6. Driving tips
4
Driving
4-6.Driving tips
Use fluids that are appropriate to
the prevailing outside temperatures.
• Engine oil
• Engine coolant
• Washer fluid
Have a service technician inspect
the condition of the battery.
Have the vehicle fitted with four
snow tires or purchase a set of tire
chains for the front tires.
*
Ensure that all tires are the specified size
and brand, and that chains match the size
of the tires.
*
: Tire chains cannot be mounted on vehi-
cles with 18-inch/19-inch tires.
Perform the following according to the
driving conditions:
Do not try to forcibly open a window
Winter driving tips
Carry out the necessary prepara-
tions and inspections before driving
the vehicle in winter. Always drive
the vehicle in a manner appropriate
to the prevailing weather condi-
tions.
Preparation for winter
WARNING
■
Driving with snow tires
Observe the following precautions to
reduce the risk of accidents.
Failure to do so may result in a loss of
vehicle control and cause death or seri-
ous injury.
●
Use tires of the specified size.
●
Maintain the recommended level of air
pressure.
●
Do not drive in excess of 75 mph (120
km/h), regardless of the type of snow
tires being used.
●
Use snow tires on all, not just some
wheels.
■
Driving with tire chains (vehicles with
17-inch tires)
Observe the following precautions to
reduce the risk of accidents.
Failure to do so may result in the vehicle
being unable to be driven safely, and may
cause death or serious injury.
●
Do not drive in excess of the speed
limit specified for the tire chains being
used, or 30 mph (50 km/h), which-
ever is lower.
●
Avoid driving on bumpy road surfaces
or over potholes.
●
Avoid sudden acceleration, abrupt
steering, sudden braking and shifting
operations that cause sudden engine
braking.
●
Slow down sufficiently before entering
a curve to ensure that vehicle control
is maintained.
●
Do not use LTA (Lane Tracing Assist)
system.
NOTICE
■
Repairing or replacing snow tires
Request repairs or replacement of snow
tires from Lexus dealers or legitimate tire
retailers.
This is because the removal and attach-
ment of snow tires affects the operation
of the tire pressure warning valves and
transmitters.
Before driving the vehicle
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст