2017 Acura RDX Owner's Manual

uuWhen Driving uAdaptive Cruise Control (ACC)*
288
Driving
■There is no vehicle ahead
Your vehicle cruises at the set speed.
■A vehicle ahead is within ACC range and going slower than the set speed
Your vehicle slows down, and maintains the same speed as the speed of the vehicle
ahead to maintain the set following distance.
■A vehicle ahead is within ACC range and going at a steady speed
Your vehicle follows the vehicle ahead of it, keeping a constant distance, without
going beyond the set speed.
■A vehicle ahead goes out of range
ACC accelerates your vehicle to the set speed, and then maintains it.
■When you depress the accelerator pedal
You can temporarily increase th e 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
You can also set the system to beep when a vehicle
detected in front of you co mes in and goes out of the
ACC detecting range. Change the ACC Forward
Vehicle Detect Beep setting. 2 Customized Features P. 106
Limitations
You may need to use the brake to maintain a safe
distance when using ACC. Additionally, ACC may
not work properly under certain conditions.
2 ACC Conditions and Limitations P. 289

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uuWhen Driving uAdaptive Cruise Control (ACC)*
Driving
The system may automatically shut off and the ACC indicator will come on under
certain conditions. Some examples of thes e conditions are listed below. Other
conditions may reduce some of the ACC functions.
2 Front Sensor Camera* P. 282
■Environmental conditions
Driving in bad weather (r ain, fog, snow, etc.).
■Roadway conditions
Driving on a snowy or wet roadway (obscure d lane marking, vehicle tracks, reflected
lights, road spra y, high contrast).
■Vehicle conditions
• The outside of the windshield is blocked by dirt, mud, leaves, wet snow, etc.
• An abnormal tire or wheel condition (wro ng sized, varied size or construction,
improperly inflated, compact spare tire
*, etc.).
• The camera temperature gets too hot.
• The parking brake is applied.
• When the front grille is dirty.
• When the front of the vehicle tilts up du e to heavy cargo in the cargo space or
rear seats.
• When tire chains are installed.
■ACC Conditions and Limitations1ACC Conditions and Limitations
The radar sensor for ACC is shared with the Collision
Mitigation Braking System
TM (CMBSTM).
2 Collision Mitigation Braking SystemTM
(CMBSTM)* P. 322
You can read about handling information for the
camera equipped with this system. 2 Front Sensor Camera
* P. 282
* Not available on all models

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uuWhen Driving uAdaptive Cruise Control (ACC)*
Driving
■Detection limitations
• A vehicle or pedestrian suddenly crosses in front of you.
• The distance 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 vehicl e 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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uuWhen Driving uAdaptive Cruise Control (ACC)*
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 vehicl e speed is increased or decreased by
about 1 mph or 1 km/h accordingly.
• If you keep the button pressed, the vehicl e speed increases or decreases by about
5 mph or 5 km/h accordingly.
■To Adjust the Vehicle Speed1 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
following-distance betwee n 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 accelera tor and brake pedals.
To increase speed
To decrease speed

292
uuWhen Driving uAdaptive Cruise Control (ACC)*
Driving
Press the (distance) button to change the
ACC range.
Each time you press the button, the following-
distance (the distance behind a vehicle
detected ahead of you) setting cycles through
extra long, long, middle, and short following-
distances.
Determine the most appropriate following-
distance setting based on your specific driving
conditions. Be sure to adhere to any
following-distance requ irements set by local
regulation.
■To Change Vehicle Distance
Distance Button

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uuWhen Driving uAdaptive Cruise Control (ACC)*
Continued
Driving
The higher your vehicle’s following-speed is, the longer the short, middle, long or
extra long following-distance becomes. See the following examples for your
reference.
Vehicle
DistanceWhen the vehicle speed is:
50 mph (80 km/h)65 mph (104 km/h)
Short
84 feet
26 meters 1.1 sec102 feet
31 meters 1.1 sec
Middle
111 feet
34 meters 1.5 sec139 feet
43 meters 1.5 sec
Long
155 feet
48 meters 2.1 sec202 feet
62 meters 2.1 sec
Extra Long
215 feet
66 meters
3.0 sec285 feet
87 meters
3.0 sec

uuWhen Driving uAdaptive Cruise Control (ACC)*
294
Driving
To cancel adaptive cruise control, do any of
the following:
• Press the CANCEL button.
• Press the MAIN button.
• Depress the brake pedal.
■Automatic cancellation
The beeper sounds and a me ssage 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 dete cted, 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 manually 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.
■To Cancel1 To Cancel
Resuming the prior set speed: After you have
canceled adaptive cruise c ontrol, 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 wh en 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.
1 Automatic cancellation
Even though adaptive crui se 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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uuWhen Driving uAdaptive Cruise Control (ACC)*
Driving
Press and hold the (dis tance) button for one
second. Cruise Mode Selected appears on
the driver informatio n interface for two
seconds, and then th e mode switches to
Cruise.
To switch back to ACC, press and hold the
button again for one second. ACC Mode
Selected appears on the driver information
interface 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 re lease it. This speed is then set.
■To Switch ACC to Cruise Control1To 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 followi ng interval from a vehicle
ahead of you.
ACC ON Cruise
Control ON
■To Set the Vehicle Speed
■To Adjust the Vehicle Speed