Acura RL (2011 year). Instruction — page 21

Adaptive cruise control (ACC)
consists of a radar sensor in the
front grille, the ACC buttons on the
steering wheel, and the ACC
functions of the multi-information
display.

The radar sensor for ACC is shared
with the collision mitigation braking
system

(CMBS ). For more

information on the radar sensor, see
page

. For more information on

CMBS, see page

.

419

418

If equipped

ACC Components

Adaptive Cruise Control (ACC)

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ACC INDICATOR

MULTI-INFORMATION
DISPLAY

ACC BUTTON

DISTANCE BUTTON

SET/DECEL
BUTTON

RES/ACCEL BUTTON

CANCEL BUTTON

U.S. model is shown.

TM

TM

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Adaptive cruise control (ACC) allows
you to maintain a set speed and keep
the vehicle ahead of you and your
vehicle at a safe distance without
having to use the accelerator pedal
or the brake pedal.

If the vehicle ahead of you slows
down suddenly or another vehicle
cuts in front of your vehicle, ACC
alerts you by sounding a beeper and
displaying a message on the multi-
information display.
The ACC radar sensor in the front
grille can detect and monitor the
distance of a vehicle up to 328 feet
(100 meters) ahead of your vehicle.
For more information on the radar
sensor, see page

.

Do not use ACC under these
conditions:

In poor visibility.
In heavy traffic.
When you must slow down and
speed up repeatedly.
On winding roads.
When you enter a toll gate,
interchange, service area, parking
area, etc. In these areas, there is
no vehicle ahead of you, and ACC
would still try to accelerate to your
set speed.
In bad weather (rain, fog, snow,
etc.)
On a slippery road (for example a
road covered with ice or snow).

As with any system, there are limits
to ACC. Inappropriate use of ACC
can result in a serious accident. Use
the brake pedal whenever necessary,
and always keep a safe distance
between your vehicle and other
vehicles.

When the vehicle ahead of you slows
down or speeds up, ACC senses the
change in distance and compensates
by accelerating or braking your
vehicle to reach the cruising speed
you previously set. The distance
between vehicles is based on your
speed: the faster you go, the longer
the distance will be; the slower you
go, the shorter it will be.

419

Overview

Important Saf ety Precautions

Adaptive Cruise Control (ACC)

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When there is no vehicle ahead within
ACC range

When a vehicle ahead is within ACC
range and going slower than your set
speed

Your vehicle will maintain a set
cruising speed.

If the vehicle ahead of you is going
slower than your set speed, your
vehicle will slow down to the speed
of that vehicle. Your vehicle will then
follow at a constant distance until the
vehicle ahead changes speed again.

CONTINUED

Operating Characteristics

Adaptive Cruise Control (ACC)

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Improper use of ACC can lead
to a crash.

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

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If the vehicle ahead of you slows
down abruptly, or if another vehicle
cuts in front of you, a beeper sounds
and a message appears on the multi-
information display to warn you.

Your vehicle follows the vehicle
ahead of it, keeping a constant
distance. ACC will not keep your
vehicle at a constant distance if the
vehicle ahead of you goes out of
range of your set speed.

If the vehicle ahead of you slows
down and changes lanes, ACC no
longer tracks it. Your vehicle will
then return to your set speed.

In this case, decelerate your vehicle
by pressing the brake pedal, and
keep an appropriate distance from
the vehicle ahead.

When a vehicle ahead is within ACC
range and going at a steady speed

Adaptive Cruise Control (ACC)

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ACC does not work below 25 mph
(40 km/h). It cannot bring your
vehicle to a complete stop.

ACC will not sound a beeper or
display a message on the multi-
information display to warn you of
vehicles going slower than 13 mph
(20 km/h) or vehicles that are
parked. In these cases, it is up to
you to maintain a safe distance by
using the brake pedal.

ACC may not recognize
motorcycles or other small
vehicles ahead of your vehicle.

ACC may react to vehicles beside
you or even a building beside you
by momentarily applying the
brakes or sounding a beeper under
conditions such as a sudden curve
or narrowing of the road, an
abrupt movement of the steering
wheel, or if you are in an unusual
position within your lane.

Limitations

Adaptive Cruise Control (ACC)

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Push the ACC button on the
steering wheel. The ACC indicator
on the instrument panel comes on,
and ‘‘ACC’’ is shown on the multi-
information display.

Accelerate to the desired speed
above 25 mph (40 km/h).

Press and release the SET/
DECEL button on the steering
wheel, then release the
accelerator pedal.

If you press the SET/DECEL button
when the vehicle speed is below 25
mph (40 km/h), you will hear a beep
about 1 second. This means ACC is
not activated, and you cannot set
your speed.

When your speed reaches 25 mph
(40 km/h), ACC goes into wait mode,
and ‘‘ACC’’ is shown on the multi-
information display.

1.

2.

3.

Using the ACC

Adaptive Cruise Control (ACC)

324

ACC BUTTON

SET/DECEL BUTTON

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When the speed is set, it is shown
along with a vehicle icon and
distance bars on the multi-
information display.
Refer to page

for how to set and

change the set distance between
your vehicle and the vehicle ahead of
you.

If you change the speed unit
measurement from the factory
default setting, the initial speed unit
measurement is shown under the
current unit.

To change the speed unit
measurement from mph to km/h,
see page

.

328

92

Adaptive Cruise Control (ACC)

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SET VEHICLE
SPEED

U.S.

U.S.

SET VEHICLE
DISTANCE

INITIAL SPEED UNIT

Canada

Canada

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The set speed can be increased by
using the RES/ACCEL button or the
accelerator pedal.

To increase the set speed with the
RES/ACCEL button, do this:

Press and hold the RES/ACCEL
button. The vehicle will accelerate.
When you reach the speed you want,
release the button.

To increase your speed in small
amounts, tap the RES/ACCEL
button repeatedly. Each time you do
this, your vehicle will speed up about
1 mph (1 km/h).

While the vehicle accelerates to the
set speed, the set speed on the multi-
information display will flash.

If a vehicle ahead of you is driving at
a slower speed than the speed you
want to set, your vehicle will not
accelerate; it will keep some distance
between your vehicles.

To increase the set speed with the
accelerator pedal, do this:

Press the accelerator pedal to
increase to the speed you want, then
press the SET/DECEL button. The
set speed will be shown on the multi-
information display. If you do not
press the SET/DECEL button, your
vehicle will return to the previously
set speed.

The ACC beeper will not sound
while you press the accelerator pedal,
no matter how close you get to the
vehicle ahead of you.

Increasing the Set Speed

Adaptive Cruise Control (ACC)

326

RES/ACCEL BUTTON

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The set speed can be decreased
using the SET/DECEL button or the
brake pedal.

To decrease the set speed with the
SET/DECEL button, do this:

Press and hold the SET/DECEL
button. Release the button when you
reach the speed you want.

To slow down in small amounts, tap
the SET/DECEL button repeatedly.

Each time you do this, your vehicle
slows down about 1 mph (1 km/h).

When the system detects a vehicle
ahead of you, a beeper sounds once
and a solid-line vehicle icon appears
on the multi-information display.

The set cruising speed will be shown
on the multi-information display.

On a steep downhill, the vehicle
speed may exceed the set cruising
speed.

To decrease the set speed with the
brake pedal, do this:

Tap the brake pedal. When the
vehicle slows down to the speed you
want, press the SET/DECEL button.
The set speed will be shown on the
multi-information display. If you use
the brake pedal to decrease speed,
and then press the RES/ACCEL
button, your vehicle will return to the
previously set speed.

CONTINUED

Decreasing the Set Speed

Detecting a Vehicle Ahead of You

Adaptive Cruise Control (ACC)

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SET/DECEL BUTTON

U.S.

Canada

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With ACC on, the distance between
your vehicle and the vehicle ahead of
you is controlled and maintained.
You can change this distance to one
of three ranges: long, middle, or
short.

To change the range, press the
DISTANCE button. Each time you
press the button, the range changes
from Long, to Middle, and then to
Short.

The higher your vehicle speed is, the
longer the distance between the
vehicle in front will be set as shown
below.

When that vehicle changes lanes or
goes out of ACC range, a beeper
sounds once. If there is no vehicle
ahead of you within ACC range, a
dotted-line vehicle icon will be on the
multi-information display.
To set the ACC beeper on or off, see
page

.

90

50 mph

(80 km/h)

154 feet

47 meters

111 feet

34 meters

85 feet

26 meters

Speed

Vehicle

Distance

Long

Middle

Short

65 mph

(104 km/h)

200 feet

61 meters

138 feet

42 meters

101 feet

31 meters

Changing Vehicle Distance

Adaptive Cruise Control (ACC)

328

DISTANCE BUTTON

U.S.

Canada

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Press the ACC button. The ACC
indicator in the instrument panel
goes off.

Tap the brake pedal.

Push the CANCEL button on the
steering wheel.

If you cancel ACC by pressing the
ACC button, the previously set
cruising speed is erased from
memory.

The distance you select is also
shown on the multi-information
display.

ACC is canceled whenever you do
any of these actions:

When you push the CANCEL button
or tap the brake pedal to cancel ACC,
the set cruising speed stays in
memory. When you turn on ACC
again, the speed is shown on the
multi-information display. To return
to that speed, accelerate to over 25
mph (40 km/h), then press the RES/
ACCEL button.

Canceling the ACC

Adaptive Cruise Control (ACC)

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LONG
RANGE

MIDDLE
RANGE

SHORT
RANGE

CANCEL BUTTON

U.S.

U.S.

U.S.

Canada

Canada

Canada

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This indicator normally comes on for
a few seconds when you turn the
ignition switch to the ON (II)
position. If it comes on at any other
time, there is a problem in the ACC
system. If this happens, take the
vehicle to your dealer to have it
checked.

The vehicle speed decreases
below 22 mph (35 km/h).

Driving on a mountainous road, or
driving off road for extended
periods.

When the ABS or VSA is activated.

Abrupt steering wheel movement.

Poor 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.

When ACC is automatically canceled,
the beeper sounds about 1 second,
and an ACC OFF message appears
on the multi-information display for 3
seconds.

Any of these conditions may cause
ACC to cancel:

The ACC system cannot be used
while this indicator (amber) is on.

When the VSA system indicator
comes on.

If you turn the ignition switch to the
ACCESSORY (I) or LOCK (0)
position after ACC was automatically
canceled, the set speed is erased,
and you must enter it again (see
page

).

If ACC is canceled by any these
conditions, wait until the condition
improves, then press the RES/
ACCEL button to restore ACC.
When you do this, the vehicle will
resume its set cruising speed.

324

Automatic ACC Cancelation

ACC Indicator

Adaptive Cruise Control (ACC)

330

ACC INDICATOR

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The multi-information display shows
various messages related to ACC.
For a description of each ACC
message you may see, refer to the
chart on this and the following page.

Message

CONTINUED

Description

ACC is on.

ACC detects a vehicle ahead of you.

You will hear a beep when the vehicle

moves out of the ACC radar sensor’s

range.

ACC does not detect a vehicle ahead

of you.

You will hear a beep when ACC

detects a vehicle ahead of you.

Messages on the
Multi-Inf ormation Display

Adaptive Cruise Control (ACC)

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U.S.

U.S.

Canada

Canada

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Message

Message

Description

Description

Apply the brakes immediately.

Your vehicle is too close to the vehicle

ahead of it.

You will hear a continuous beep.

ACC needs to be checked.

Have your vehicle checked by a

dealer.

ACC has automatically canceled

because its radar sensor in the front

grill is dirty.

You will hear a beep for about 1

second.

ACC has automatically canceled

because of bad weather or other

conditions.

You will hear a beep for about 1

second.

Adaptive Cruise Control (ACC)

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To switch from ACC to cruise
control, press the distance button on
the steering wheel, and hold it for 1
second.

Always be aware which mode is
selected.

When the cruise control is selected,
ACC does not sound a beeper or
display a message on the multi-
information display. Make sure to
keep a safe distance from the vehicle
ahead of you.

When you press the button, you will
see CRUISE MODE SELECTED on
the multi-information display for 2
seconds. To switch back to ACC,
press and hold the distance button
again for 1 second.

Switching to Cruise Control

Adaptive Cruise Control (ACC)

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DISTANCE BUTTON

Press the distance button.

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×

The HomeLink Universal
Transceiver built into your vehicle
can be programmed to operate up to
three remote controlled devices
around your home, such as garage
doors, lighting, or home security
systems.

Before programming your
HomeLink to operate a garage door
opener, confirm that the opener has
an external entrapment protection
system, such as an ‘‘electronic eye,’’
or other safety and reverse stop
features.

If your garage door was
manufactured before April 1, 1982,
you may not be able to program
HomeLink to operate it. These units
do not have safety features that
cause the motor to stop and reverse
it if an obstacle is detected during
closing, increasing the risk of injury.
Do not use HomeLink with any

garage door opener that lacks safety
stop and reverse features.

Units manufactured between April 1,
1982 and January 1, 1993 may be
equipped with safety stop and
reverse features. If your unit does
not have an external entrapment
protection system, an easy test to
confirm the function and
performance of the safety stop and
reverse feature is to lay a 2

4

under the closing door. The door
should stop and reverse upon
contacting the piece of wood.
As an additional safety feature,
garage door openers manufactured
after January 1, 1993 are required to
have external entrapment protection
systems, such as an electronic eye,
which detect an object obstructing
the door.

Refer to the safety information that
came with your garage door opener

to test that the safety features are
functioning properly. If you do not
have this information, contact the
manufacturer of the equipment.
Before programming HomeLink to a
garage door or gate opener, make
sure that people and objects are out
of the way of the device to prevent
potential injury or damage.
When programming a garage door
opener, park just outside the garage.

If you just

received your vehicle and have not
trained any of the buttons in
HomeLink before, you should erase
any previously learned codes before
training the first button. To do this,
press and hold the two outside
buttons on the HomeLink
transceiver for about 10

20 seconds,

until the red indicator flashes.
Release the buttons, then proceed to
step 1.

General Saf ety Inf ormation

Important Saf ety Precautions

Training HomeLink

HomeLink Universal Transceiver

Bef ore you begin

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