Acura TLX (2019 year). Instruction — part 25
390
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When Driving
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Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
Driving
Adaptive Cruise Control (ACC) with Low Speed
Follow (LSF)
Helps maintain a constant vehicle speed and a set following-interval behind a vehicle
detected ahead of yours and, if the detected vehicle comes to a stop, can decelerate
and stop your vehicle, without you having to keep your foot on the brake or the
accelerator.
When ACC with LSF slows your vehicle by applying the brakes, your vehicle’s brake
lights will illuminate.
1
Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
Important Reminder
As with any system, there are limits to ACC with LSF.
Use the brake pedal whenever necessary, and always
keep a safe interval between your vehicle and other
vehicles.
Be careful not to severely impact the radar sensor
cover.
3
WARNING
Improper use of ACC with LSF can lead to a
crash.
Use ACC with LSF only when driving on
expressways or freeways and in good
weather conditions.
3
WARNING
ACC with LSF has limited braking capability
and may not stop your vehicle in time to
avoid a collision with a vehicle that quickly
stops in front of you.
Always be prepared to apply the brake
pedal if the conditions require.
When to use
■
Vehicle speed for ACC with LSF: A vehicle is detected ahead within ACC with
LSF range – ACC with LSF operates at speeds up to 90 mph (145 km/h).
No vehicle is detected within ACC with LSF range – ACC with LSF operates at
the speed of about 25 mph (40 km/h) or above.
■
Gear position for ACC with LSF: In
(
D.
The radar sensor is
behind the emblem.
The camera is
located behind the
rearview mirror.
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391
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When Driving
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Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
Driving
■
How to activate the system
1
Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
When the MAIN button is pressed, both ACC with
LSF and the Lane Keeping Assist System (LKAS) are
either turned on or off.
ACC with LSF may not work properly under certain
conditions.
2 ACC with LSF Conditions and Limitations
P. 395
When not using ACC with LSF: Turn off adaptive
cruise by pressing the MAIN button. This also will
turn off the Lane Keeping Assist System (LKAS).
Do not use ACC with LSF under the following
conditions.
•
On roads with heavy traffic or while driving in
continuous stop and go traffic.
•
On roads with sharp turns.
•
On roads with steep downhill sections, as the set
vehicle speed can be exceeded by coasting. In such
cases, ACC with LSF will not apply the brakes to
maintain the set speed.
•
On roads with toll collection facilities or other
objects between lanes of traffic, or in parking
areas, or facilities with drive through access.
■
Press the MAIN button on
the steering wheel.
ACC (green) is on in the
instrument panel.
ACC with LSF is ready to
use.
How to use
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392
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When Driving
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Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
Driving
When driving at about 25 mph (40 km/h) or above: Take your foot off the
pedal and press down the RES/+/SET/– switch when you reach the desired speed.
The moment you release the switch, the set speed is fixed, and ACC with LSF begins.
When driving at slower than about 25 mph (40 km/h): If the vehicle is moving
and the brake pedal is not depressed, pressing the switch fixes the set speed to
about 25 mph (40 km/h) regardless of current vehicle speed. If your vehicle is
stationary, you can set the vehicle speed even with the brake pedal depressed.
When ACC with LSF starts operating, the
vehicle icon, interval bars and set speed
appear on the multi-information display.
■
To Set the Vehicle Speed
On when ACC with LSF
begins
Press down and release
RES/+/SET/− Switch
Set Vehicle Speed
Set Vehicle Interval
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393
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When Driving
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Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
Driving
■
There is a vehicle ahead
ACC with LSF monitors if a vehicle ahead of you enters the ACC with LSF range. If a
vehicle is detected doing so, the ACC with LSF system maintains or decelerates your
vehicle’s set speed in order to keep the vehicle’s set following-interval from the
vehicle ahead.
2 To Set or Change Following-interval P. 398
When a vehicle whose speed is slower than
your set speed is detected in front of you, your
vehicle starts to slow down.
■
When in Operation
1
If the vehicle detected ahead of you slows down
abruptly, or if another vehicle is detected cutting in
front of you, the beeper sounds and a message
appears on the multi-information display, and the
head-up warning lights come on.
Depress the brake pedal, and keep an appropriate
interval from the vehicle ahead.
Even if the interval between your vehicle and the
vehicle detected ahead is short, ACC with LSF may
start accelerating your vehicle under the following
circumstances:
•
The vehicle ahead of you is going at almost the
same speed as, or faster than, your vehicle.
•
A vehicle that cuts in front of you is going faster
than your vehicle, gradually increasing the interval
between the vehicles.
You can also set the system to beep when a vehicle
detected in front of you comes in and goes out of the
ACC with LSF detecting range. Change the ACC
Forward Vehicle Detect Beep
*
setting.
2 Customized Features P. 120, 292
Beep
Head-up
Warning
Lights
ACC with LSF Range: 394 ft. (120 m)
A vehicle icon appears on the
multi-information display
* Not available on all models
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When Driving
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Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
394
Driving
■
There is no vehicle ahead
Your vehicle maintains the set speed without
having to keep your foot on the brake or
accelerator pedal.
If there previously was a vehicle detected
ahead that kept your vehicle from traveling at
the set speed, ACC with LSF accelerates your
vehicle to the set speed, and then maintains it.
■
When you depress the accelerator pedal
You can temporarily increase the vehicle speed. In this case, there is no audible or
visual alert even if a vehicle is in the ACC with LSF range.
ACC with LSF stays on unless you cancel it. Once you release the accelerator pedal,
the system resumes the set speed.
There are times when the vehicle speed will decrease when the accelerator pedal is
lightly applied.
■
A vehicle detected ahead is within ACC with LSF range and slows to a stop
Your vehicle also stops, automatically. The
Stopped message appears on the multi-
information display.
When the vehicle ahead of you starts again,
the vehicle icon on the multi-information
display blinks. If you press the RES/+/SET/–
switch up or down, or depress the accelerator
pedal, ACC with LSF operates again within the
prior set speed.
A vehicle icon with dotted-line
contour appears on the multi-
information display
1
Limitations
You may need to use the brake to maintain a safe
interval when using ACC with LSF. Additionally, ACC
with LSF may not work properly under certain
conditions.
2 ACC with LSF Conditions and Limitations
P. 395
1
A vehicle detected ahead is within ACC with LSF range and slows
to a stop
3
WARNING
Exiting a vehicle that has been stopped
while the ACC with LSF system is operating
can result in the vehicle moving without
operator control.
A vehicle that moves without operator
control can cause a crash, resulting in
serious injury or death.
Never exit a vehicle when the vehicle is
stopped by ACC with LSF.
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395
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When Driving
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Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
Driving
The system may automatically shut off and the ACC indicator will come on under
certain conditions. Some examples of these conditions are listed below. Other
conditions may reduce some of the ACC functions.
2 Front Sensor Camera P. 388
■
Environmental conditions
Driving in bad weather (rain, fog, snow, etc.).
■
Roadway conditions
Driving on a snowy or wet roadway (obscured lane marking, vehicle tracks, reflected
lights, road spray, high contrast).
■
Vehicle conditions
• The outside of the windshield is blocked by dirt, mud, leaves, wet snow, etc.
• An abnormal tire or wheel condition (Wrong sized, varied size or construction,
improperly inflated, compact spare tire
*
, etc.).
• The camera temperature gets too high.
• The parking brake is applied.
• When the front grille is dirty.
• The vehicle is tilted due to a heavy load or suspension modifications.
• When tire chains are installed.
■
ACC with LSF Conditions and Limitations
1
ACC with LSF Conditions and Limitations
The radar sensor for ACC with LSF is shared with the
Collision Mitigation Braking System
TM
(CMBS
TM
).
2 Collision Mitigation Braking System
You can read about handling information for the
camera equipped with this system.
2 Front Sensor Camera P. 388
Always keep the radar sensor cover clean.
Never use chemical solvents or polishing powder for
cleaning the sensor cover. Clean it with water or a
mild detergent.
Do not put a sticker on the radar sensor cover or
replace the radar sensor cover.
If you need the radar sensor to be repaired, or
removed, or the radar sensor cover is strongly
impacted, turn off the system by pressing the MAIN
button and take your vehicle to a dealer.
Have your vehicle checked by a dealer if you find any
unusual behavior of the system (e.g., the warning
message appears too frequently).
* Not available on all models
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When Driving
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Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
396
Driving
■
Detection limitations
• A vehicle suddenly crosses in front of you.
• The interval between your vehicle and the vehicle ahead of you is too short.
• A vehicle cuts in front of you at a slow speed, and it brakes suddenly.
• When you accelerate rapidly and approach the vehicle ahead of you at high
speed.
• The vehicle ahead of you is a motorcycle, bicycle, mobility scooter, or other small
vehicle.
• When there are animals in front of your vehicle.
• When you drive on a curved or winding or undulating road that makes it difficult
for the sensor to properly detect a vehicle in front of you.
• The speed difference between your vehicle and a vehicle in front of you is
significantly large.
• An oncoming vehicle suddenly comes in front of you.
• Your vehicle abruptly crosses over in front of an oncoming vehicle.
• When driving through a narrow iron bridge.
• When the vehicle ahead of you brakes suddenly.
• When the vehicle ahead of you has a unique shape.
• When your vehicle or the vehicle ahead of you is driving on one edge of the lane.
1
ACC with LSF Conditions and Limitations
If the front of the vehicle is impacted in any of the
following situations, the radar sensor may not work
properly. Have your vehicle checked by a dealer:
•
The vehicle mounted onto a bump, curb, chock,
embankment, etc.
•
You drive the vehicle where the water is deep.
•
Your vehicle has a frontal collision.
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When Driving
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Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
Driving
Increase or decrease the vehicle speed using the RES/+/SET/– switch on the steering
wheel.
• Each time you press the switch up or down, the vehicle speed is increased or
decreased by about 1 mph or 1 km/h accordingly.
• If you keep the switch pressed up or down, the vehicle speed increases or
decreases by about 5 mph or 5 km/h accordingly.
■
To Adjust the Vehicle Speed
1
If a vehicle detected ahead is going at a speed slower
than your increased set speed, ACC with LSF may not
accelerate your vehicle. This is to maintain the set
interval between your vehicle and the vehicle ahead.
You can switch the displayed set speed
measurements on the multi-information display
between mph and km/h.
2 Customized Features P. 120
To increase speed
To decrease speed
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398
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When Driving
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Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
Driving
Press the (interval) button to change the
ACC with LSF following-interval.
Each time you press the button, the following-
interval (the interval behind a vehicle detected
ahead of you) setting cycles through short,
middle, long, and extra long following-
intervals.
Determine the most appropriate following-
interval setting based on your specific driving
conditions. Be sure to adhere to any
following-interval requirements set by local
regulation.
■
To Set or Change Following-interval
Interval Button
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399
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When Driving
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Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
Continued
Driving
The higher your vehicle’s following-speed is, the longer the short, middle, long or
extra long following-interval becomes. See the following examples for your
reference.
When your vehicle stops automatically because a vehicle detected ahead of you has
stopped, the interval between the two vehicles will vary based on the ACC with LSF
interval setting.
Following-interval
When the Set Speed is:
50 mph (80 km/h)
65 mph (104 km/h)
Short
83 feet
25 meters
1.1 sec
100 feet
31 meters
1.1 sec
Middle
110 feet
33 meters
1.5 sec
137 feet
42 meters
1.5 sec
Long
154 feet
47 meters
2.1 sec
200 feet
61 meters
2.1 sec
Extra
Long
204 feet
62 meters
2.8 sec
265 feet
81 meters
2.8 sec
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When Driving
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Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
400
Driving
To cancel ACC with LSF, do any of the
following:
• Press the CANCEL button.
• Press the MAIN button.
u
ACC with LSF indicator goes off.
• Depress the brake pedal.
u
When the LSF function has stopped the
vehicle, you cannot cancel ACC with LSF
by depressing the brake pedal.
■
To Cancel
1
Resuming the prior set speed: After you have
canceled ACC with LSF, you can resume the prior set
speed while it is still displayed.
Press the RES/+/SET/– switch up.
The set speed cannot be set or resumed when ACC
with LSF has been turned off using the MAIN button.
Press the MAIN button to activate the system, then
set the desired speed.
CANCEL
Button
MAIN
Button
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When Driving
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Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
Driving
■
Automatic cancellation
The beeper sounds and a message appears on the multi-information display when
ACC with LSF is automatically canceled. Any of these conditions may cause the ACC
with LSF to automatically cancel:
• Bad weather (rain, fog, snow, etc.)
• When the radar sensor in the front grille gets dirty.
• The vehicle ahead of you cannot be detected.
• An abnormal tire condition is detected, or the tires are skidding.
• Driving on a mountainous road, or driving off road for extended periods.
• Abrupt steering wheel movement.
• When the ABS, VSA® or CMBS
TM
is activated.
• When the ABS or VSA® system indicator comes on.
• When the vehicle is stopped on a very steep slope.
• When you instructionly apply the parking brake.
• When the detected vehicle within the ACC with LSF range is too close to your
vehicle.
• When a detected vehicle goes out of the ACC with LSF range while your vehicle
is stationary.
• The camera behind the rearview mirror, or the area around the camera, including
the windshield, gets dirty.
The ACC with LSF automatic cancellation can be also triggered by the following
causes. In these cases, the parking brake will be automatically applied.
• The driver’s seat belt is unfastened when the vehicle is stationary.
• The vehicle stops for more than 10 minutes.
• The engine is turned off.
1
Even though ACC with LSF has been automatically
canceled, you can still resume the prior set speed.
Wait until the condition that caused ACC with LSF to
cancel improves, then press the RES/+/SET/– switch
up.
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When Driving
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Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
402
Driving
Press and hold the (interval) button for one
second. Cruise Mode Selected appears on
the multi-information display for two seconds,
and then the mode switches to Cruise.
To switch back to ACC with LSF, press and
hold the button again for one second. ACC
Mode Selected appears on the multi-
information display for two seconds.
■
When to use
Desired speed in a range above roughly 25 mph (40 km/h) ~.
Take your foot off the pedal and press the RES/+/SET/– switch down when you
reach the desired speed.
The moment you release the RES/+/SET/– switch, the set speed is fixed, and cruise
control begins. The CRUISE CONTROL indicator comes on.
Each time you press the RES/+/SET/– switch up or down, the vehicle speed is
increased or decreased by about 1 mph (1.6 km/h).
If you keep the RES/+/SET/– switch pressed up or down, the vehicle speed increases
or decreases until you release it. This speed is then set.
■
To Switch ACC with LSF to Cruise Control
1
To Switch ACC with LSF to Cruise Control
Always be aware which mode you are in. When you
are driving in Cruise mode, the system will not assist
you to maintain a following-interval from a vehicle
ahead of you.
You can switch the displayed set speed
measurements on the multi-information display
between mph and km/h.
2 Customized Features P. 120
ACC with
LSF ON
Cruise
Control ON
■
To Set the Vehicle Speed
■
To Adjust the Vehicle Speed
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403
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When Driving
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Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
Driving
To cancel cruise control, do any of the following:
• Press the CANCEL button.
• Press the MAIN button.
• Depress the brake pedal.
The CRUISE CONTROL indicator goes off.
■
To Cancel
1
Resuming the prior set speed:
After cruise control has been canceled, you can still
resume the prior set speed by pressing the RES/+/
SET/– switch up while driving at a speed of at least
25 mph (40 km/h) or more.
You cannot set or resume in the following situations:
•
When vehicle speed is less than 25 mph (40 km/h).
•
When the MAIN button is turned off.
At vehicle speeds of 22 mph (35 km/h) or less, cruise
control canceled automatically.
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404
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When Driving
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Road Departure Mitigation (RDM) System
Driving
Road Departure Mitigation (RDM) System
Alerts and helps to assist you when the system detects a possibility of your vehicle
unintentionally crossing over detected lane markings and/or leaving the roadway
altogether.
The front camera behind the rearview mirror
monitors left and right lane markings (in white
or yellow). If your vehicle is getting too close to
detected lane markings without a turn signal
activated, the system, in addition to a visual
alert, applies steering torque and alerts you
with rapid vibrations on the steering wheel, to
help you remain within the detected lane.
2 Customized Features P. 120, 292
As a visual alert, the Lane Departure
message appears on the multi-information
display.
If the system determines that its steering input
is insufficient to keep your vehicle on the
roadway, it may apply braking.
u
Braking is applied only when the lane
markings are solid continuous lines.
The system cancels assisting operations when you turn the steering wheel to avoid
crossing over detected lane markings.
If the system operates several times without detecting driver response, the system
beeps to alert you.
■
How the System Works
1
Road Departure Mitigation (RDM) System
Important Safety Reminder
Like all assistance systems, the RDM system has
limitations.
Over-reliance on the RDM system may result in a
collision. It is always your responsibility to keep the
vehicle within your driving lane.
The RDM system only alerts you when lane drift is
detected without a turn signal in use. The RDM
system may not detect all lane markings or lane or
roadway departures; accuracy will vary based on
weather, speed and lane marker condition. It is
always your responsibility to safely operate the
vehicle and avoid collisions.
You can read about handling information for the
camera equipped with this system.
2 Front Sensor Camera P. 388
The RDM system may not work properly or may work
improperly under the certain conditions:
2 RDM Conditions and Limitations P. 407
There are times when you may not notice RDM
functions due to your operation of the vehicle, or
road surface conditions.
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When Driving
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Road Departure Mitigation (RDM) System
Driving
The system becomes ready to start searching for lane markings when all the
following conditions are met:
• The vehicle is traveling between about 45 and 90 mph (72 and 145 km/h).
• The vehicle is on a straight or slightly curved road.
• The turn signals are off.
• The brake pedal is not depressed.
• The wipers are not in continuous operation.
• The vehicle is not accelerating or braking, and the steering wheel is not being
turned.
• The system makes a determination that the driver is not actively accelerating,
braking or steering.
■
How the System Activates
1
The RDM system may automatically shut off and the
indicator comes and stays on.
2 Indicators P. 84
RDM system function can be impacted when the
vehicle is:
•
Not driven within a traffic lane.
•
Driven on the inside edge of a curve, or outside of
a lane.
•
Driven in a narrow lane.
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