Acura ILX (2018 year). Instruction — part 24

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When Driving

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Adaptive Cruise Control (ACC)

*

Driving

Adaptive Cruise Control (ACC)

*

Helps maintain a constant vehicle speed and a set following-interval behind a vehicle
detected ahead of yours, without you having to keep your foot on the brake or the
accelerator.
When ACC slows your vehicle by applying the brakes, your vehicle’s brake lights will
illuminate.

1

Adaptive Cruise Control (ACC)

*

Important Reminder
As with any system, there are limits to ACC. 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 can lead to a crash.

Use ACC only when traveling on open
highways in good weather.

3

WARNING

ACC has limited braking capability.

When your vehicle speed drops below 22
mph (35 km/h), ACC will automatically
cancel and no longer will apply your
vehicle’s brakes.

Always be prepared to apply the brake
pedal when conditions require.

When to use

■

Vehicle speed for adaptive cruise control: Desired speed in a range above
roughly 25 mph (40 km/h) ~

■

Shift positions for adaptive cruise control: In

(

D or

(

S.

The radar sensor is in
the front grille.

The camera is
located behind the
rearview mirror.

* Not available on all models

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When Driving

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Adaptive Cruise Control (ACC)

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Driving

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How to activate the system

1

Adaptive Cruise Control (ACC)

*

When the MAIN button is pressed, both ACC and the
Lane Keeping Assist System (LKAS) are either turned
on or off.

ACC may not work properly under certain conditions.

2 ACC Conditions and Limitations P. 377

When not using adaptive cruise control: Turn off
adaptive cruise by pressing the MAIN button. This
also will turn off the Lane Keeping Assist System
(LKAS).

Do not use ACC 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 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 is ready to use.

* Not available on all models

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374

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When Driving

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Adaptive Cruise Control (ACC)

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Driving

Take your foot off the pedal and press the DECEL/SET button when you reach the
desired speed.

The moment you release the DECEL/SET
button, the set speed is fixed, and adaptive
cruise control begins.

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A vehicle icon and interval bars appear
on the multi-information display.

■

To Set the Vehicle Speed

On when ACC
begins

Press and release

DECEL/SET Button

Set Vehicle Speed

Set Vehicle Interval

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When Driving

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Adaptive Cruise Control (ACC)

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Driving

■

There is a vehicle ahead

ACC monitors if a vehicle ahead of you enters the ACC range. If a vehicle is detected
doing so, the ACC 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. 380

■

When in Operation

1

When in Operation

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 to alert you
to brake.
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 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 detecting range. Change the ACC Forward
Vehicle Detect Beep setting.

2 Customized Features P. 99, 263

Beep

ACC Range: 394 ft. (120 m)

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When Driving

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Adaptive Cruise Control (ACC)

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376

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 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 alerts even if a vehicle is in ACC range.
ACC 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.

1

When in Operation

Limitations
You may need to use the brake to maintain a safe
interval when using ACC. Additionally, ACC may not
work properly under certain conditions.

2 ACC Conditions and Limitations P. 377

A vehicle icon with dotted-line
contour appears on the multi-
information display

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When Driving

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Adaptive Cruise Control (ACC)

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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. 370

■

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 Conditions and Limitations

1

ACC Conditions and Limitations

The radar sensor for ACC is shared with the Collision
Mitigation Braking System

TM

(CMBS

TM

).

2 Collision Mitigation Braking System

TM

(CMBS

TM

)

*

P. 412

You can read about handling information for the
camera equipped with this system.

2 Front Sensor Camera

*

P. 370

* Not available on all models

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When Driving

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Adaptive Cruise Control (ACC)

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Driving

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Detection limitations

• A vehicle or pedestrian suddenly crosses in front of you.
• The interval between your vehicle and the vehicle or pedestrian 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 or pedestrian 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 or a pedestrian 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.

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When Driving

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Adaptive Cruise Control (ACC)

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Driving

Increase or decrease the vehicle speed using the RES/ACCEL or DECEL/SET buttons
on the steering wheel.

• Each time you press the button, the vehicle speed is increased or decreased by

about 1 mph or 1 km/h accordingly.

• If you keep the button pressed, the vehicle speed increases or decreases by about

5 mph or 5 km/h accordingly.

■

To Adjust the Vehicle Speed

1

To Adjust the Vehicle Speed

If a vehicle detected ahead is going at a speed slower
than your increased set speed, ACC may not
accelerate your vehicle. This is to maintain the set
interval between your vehicle and the vehicle ahead.

You can set the vehicle speed using the DECEL/SET
button on the steering wheel when adjusting the
speed with the accelerator and brake pedals.

You can switch the displayed set speed
measurements on the multi-information display
between mph and km/h.

2 Customized Features P. 99, 263

To increase speed

To decrease speed

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380

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When Driving

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Adaptive Cruise Control (ACC)

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Driving

Press the (interval) button to change the
ACC following-interval.
Each time you press the button, the following-
interval (the interval behind a vehicle detected
ahead of you) setting cycles through extra
long, long, middle, and short 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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Adaptive Cruise Control (ACC)

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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.

Following-interval

When the Set Speed is:

50 mph (80 km/h)

65 mph (104 km/h)

Short

84 feet

26 meters

1.1 sec

102 feet

31 meters

1.1 sec

Middle

111 feet

34 meters

1.5 sec

139 feet

43 meters

1.5 sec

Long

155 feet

48 meters

2.1 sec

202 feet

62 meters

2.1 sec

Extra
Long

215 feet

66 meters

3.0 sec

285 feet

87 meters

3.0 sec

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When Driving

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Adaptive Cruise Control (ACC)

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382

Driving

To cancel adaptive cruise control, do any of
the following:
• Press the CANCEL button.
• Press the MAIN button.
• Depress the brake pedal.

■

To Cancel

1

To Cancel

Resuming the prior set speed: After you have
canceled adaptive cruise control, you can resume the
prior set speed while it is still displayed. Press the
RES/ACCEL button when driving at a speed of at
least 25 mph (40 km/h) or more.

You cannot set or resume when vehicle speed is less
than 25 mph (40 km/h).

The set speed cannot be set or resumed when ACC
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)

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Driving

■

Automatic cancellation

The beeper sounds and a message appears on the multi-information display when
ACC is automatically canceled. Any of these conditions may cause the ACC
cancellation:
• Your vehicle speed slows down to 22 mph (35 km/h) and below.
• 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® is activated.
• When the ABS or VSA® system indicator comes on.
• When you instructionly apply the parking brake.
• When the detected vehicle within the ACC range is too close to your vehicle.
• The camera behind the rearview mirror, or the area around the camera, including

the windshield, gets dirty.

1

Automatic cancellation

Even though adaptive cruise control has been
automatically canceled, you can still resume the prior
set speed. Wait until the condition that caused ACC
to cancel improves, then press the RES/ACCEL
button.

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When Driving

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Adaptive Cruise Control (ACC)

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384

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, 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 DECEL/SET button when you reach the
desired speed.
The moment you release the DECEL/SET button, the set speed is fixed, and cruise
control begins. The CRUISE CONTROL indicator comes on.

Each time you press the RES/ACCEL or DECEL/SET button, the vehicle speed is
increased or decreased by about 1 mph (1.6 km/h).
If you keep the RES/ACCEL or DECEL/SET button pressed, the vehicle speed
increases or decreases until you release it. This speed is then set.

■

To Switch ACC to Cruise Control

1

To Switch ACC 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. 99

ACC ON

Cruise
Control ON

■

To Set the Vehicle Speed

■

To Adjust the Vehicle Speed

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When Driving

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Adaptive Cruise Control (ACC)

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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

To Cancel

Resuming the prior set speed:
After cruise control has been canceled, you can still
resume the prior set speed by pressing the RES/
ACCEL button 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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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.

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. 370

The RDM system may not work properly or may work
improperly under the certain conditions:

2 RDM Conditions and Limitations P. 389

There are times when you may not notice RDM
functions due to your operation of the vehicle, or
road surface conditions.

* Not available on all models

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When Driving

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Road Departure Mitigation (RDM) System

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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 system makes a determination that the driver is not actively accelerating,

braking or steering.

■

How the System Activates

1

How the System Activates

The RDM system may automatically shut off and the

indicator comes and stays on.

2 Indicators P. 77

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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