2008 Acura RL brake

The radar sensor for ACC is shared
with the collision mitigation brake
system (CMBS). For more
inf ormation on the radar sensor, see
page . For more inf ormation on
CMBS, see page .
Adaptive cruise control (ACC)
consists of a radar sensor in the
f ront grille, the ACC buttons on the
steering wheel, and the ACC
f unctions of the multi-inf ormation
display.362 361
If equipped
A CC Components
A daptive Cruise Control (A CC)
280
ACC INDICATOR
MULTI-INFORMATION
DISPLAY
ACC BUTTON
DISTANCE BUTTON
CANCEL BUTTON SET/DECEL
BUTTON
RES/ACCEL BUTTON
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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 saf e 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 f ront of your vehicle, ACC
alerts you by sounding a beeper and
displaying a message on the multi-
inf ormation display.
TheACCradarsensorinthefront
grille can detect and monitor the
distance of a vehicle up to 328 f eet
(100 meters) ahead of your vehicle.
For more inf ormation 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, but ACC
would still try to accelerate to your
set speed.
In bad weather (rain, f og, snow,
etc.)
On a slippery road (f or 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 f aster you go, the longer
the distance will be; the slower you
go, the shorter it will be.
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CONT INUED
Overview
Important Saf ety Precautions
A daptive Cruise Control (A CC)
Features
281
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If the vehicle ahead of you slows
down abruptly, or if another vehicle
cuts in f ront of you, a beeper sounds
and a message appears on the multi-
inf ormation display to warn you.Your vehicle f ollows 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 the case, decelerate your vehicle
by pressing the brake pedal, and
keep an appropriate distance f rom
the vehicle ahead.
When a vehicle ahead is within ACC
range and going at a steady speed
A daptive Cruise Control (A CC)
Features
283
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2008 RL

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-
inf ormation 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 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
A daptive Cruise Control (A CC)
284
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2008 RL

When the speed is set, it is shown
along with a vehicle icon and
distance bars on the multi-
inf ormation display.
Refertopageforhowtosetand
change the set distance between
your vehicle and the vehicle ahead of
you.If you cancel ACC by pressing the
CANCEL button or by tapping the
brake pedal, the previously set
cruising speed is shown on the multi-
inf ormation display. To store this
speed as your new cruising speed,
press and release the RES/ACCEL
button.
If you change the speed unit
measurement f rom the f actory
def ault setting, the initial speed unit
measurement is shown under the
current unit.
To change the speed unit
measurement f rom mph to km/h,
see page . 92289
A daptive Cruise Control (A CC)
286
SET VEHICLE
SPEED
U.S.
CANADA CANADA CANADA
U.S. U.S.
PREVIOUSLY SET SPEED
SET VEHICLE
DISTANCE
INITIAL S
PEEDUNIT
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2008 RL

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-inf ormation display. If you use
the brake pedal to decrease speed,
andthenpresstheRES/ACCEL
button, your vehicle will return to the
previously set speed.
Decreasing the Set Speed Detecting a Vehicle A head of You
A daptive Cruise Control (A CC)
288
SET/DECEL BUTTON
U.S.
CANADA
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2008 RL

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 f rom
memory.
The distance you select is also
shown on the multi-inf ormation
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-inf ormation display. To return
to that speed, accelerate to over 25
mph (40 km/h), then press the RES/
ACCEL button.
Canceling the A CC
A daptive Cruise Control (A CC)
290
LONG
RANGE
MIDDLE
RANGE
SHORT
RANGE CANCEL BUTTON
U.S.
CANADA
U.S. CANADA
U.S.
CANADA
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2008 RL

Message MessageDescription Description
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.
ACC has automatically cancelled
because its radar sensor in the f ront
grill is dirty.
You will hear three beeps. ACC has automatically cancelled
because of bad weather or other
conditions.
You will hear three beeps.
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.
A daptive Cruise Control (A CC)
Features
293
U.S.
U.S.
CANADA
CANADA
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