2018 Acura RDX Owner's Manual

uuWhen Driving uAdaptive Cruise Control (ACC)*
296
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.

Continued297
uuWhen Driving uAdaptive Cruise Control (ACC)*
Driving
Press and hold the (interval) 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

uuWhen Driving uAdaptive Cruise Control (ACC)*
298
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 Cancel1To Cancel
Resuming the prior set speed:
After cruise control has be en 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 m ph (35 km/h) or less, cruise
control canceled automatically.

299
uuWhen Driving uLane Departure Warning (LDW)*
Continued
Driving
Lane Departure Warning (LDW)*
Alerts you when the system determines a possibility of your vehicle unintentionally
crossing over detected lane markings.
If your vehicle is getting too close to detected
left or right side lane markings without a turn
signal activated, LDW will give audible and
visual alerts.
The beeper sounds and the Lane Departure
message appears on the multi-information
display, letting you know that you need to
take appropriate action.
The system begins to search for lane mark ings 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.
■How the System Works
1Lane Departure Warning (LDW)*
Important Safety Reminder
Like all assistance systems, LDW has limitations.
Over-reliance on LDW may result in a collision. It is
always your respons ibility to keep the vehicle within
your driving lane.
LDW only alerts you when lane drift is detected
without a turn signal in us e. LDW may not detect all
lane markings or lane departures; a ccuracy 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. 284
■How the System Activates1How the System Activates
LDW may automatically shut off and the LDW
indicator comes and stays on.
2 Indicators P. 68
* Not available on all models

300
uuWhen Driving uLane Departure Warning (LDW)*
Driving
Press the LDW button to turn the system on
and off. u The indicator in the button comes on
when the system is on.
■LDW On and Off
LDW Button Indicator

301
uuWhen Driving uLane Departure Warning (LDW)*
Continued
Driving
LDW may not activate or may not recognize lanes, and may activate even when
keeping in the middle of a lane, under ce rtain conditions. Some examples of these
conditions are listed below.
■Environmental conditions
• Driving in bad weather (rain, fog, snow, etc.).
• Sudden changes between light and dark, such as an entrance or exit of a tunnel.
• There is little contrast between lane lines and the roadway surface.
• Driving into low sunlight (e.g., at dawn or dusk).
• Strong light is reflec ted onto the roadway.
• Driving in the shadows of trees, buildings, etc.
• Shadows of adjacent objects ar e parallel to lane markings.
• Roadway objects or structures are misinterpreted as lane markers.
• Reflections on the interior of the front windshield.
■Roadway conditions
• Driving on a snowy or wet roadway (obscured lane marking, vehicle tracks,
reflected lights, road spray, high contrast).
• Driving on a road with temporary lane markings.
• Faint, multiple, or varied lane markings are visible on the roadway due to road
repairs or old lane markings.
• The roadway has merging, split, or crossing lines (e.g., such as at an intersection
or crosswalk).
• The lane markings are extremel y narrow, wide, or changing.
• The vehicle in front of you is driving near the lane lines.
• The road is hilly or the vehicle is approaching the crest of a hill.
• Driving on rough or unpaved roads, or over bumpy surfaces.
■LDW Conditions and Limitations

302
uuWhen Driving uLane Departure Warning (LDW)*
Driving
• When objects on the road (curb, guard rail, pylons, etc.) are recognized as white
lines (or yellow lines).
• When driving on roads with double lines.
■Vehicle conditions
• Headlight lenses are dirty or the headlights are not properly adjusted.
• The outside of the windshield is streake d or blocked by dirt, mud, leaves, wet
snow, etc.
• The inside of the windshield is fogged.
• The camera temperature gets too hot.
• An abnormal tire or wheel condition (wro ng sized, varied size or construction,
improperly inflated, compact spare tire
*, etc.).
• The vehicle is tilted due to a heav y load or suspension modifications.
* Not available on all models

303
uuWhen Driving uLane Keeping Assist System (LKAS)*
Continued
Driving
Lane Keeping Assist System (LKAS)*
Provides steering input to help keep the vehicle in the middle of a detected lane and
provides audible and visual alerts if the vehicle is detected drifting out of its lane.1Lane Keeping Assist System (LKAS)*
Important Safety Reminders
The LKAS is for your convenience only. It is not a
substitute for your vehicl e control. The system does
not work if you take y our hands off the steering
wheel or fail to steer the vehicle.
2 Multi-Information Display Warning and
Information Messages P. 93
Do not place objects on the instrument panel.
Objects may reflect on th e front windshield and
prevent correct detectio n of the traffic lanes.
LKAS only alerts you when lane drift is detected
without a turn signal in use. LKAS may not detect all
lane markings or lane departures; a ccuracy will vary
based on weather, speed, an d lane marker condition.
It is always your responsibility to safely operate the
vehicle and avoid collisions.
The LKAS is convenient when it is used on freeways.
The LKAS may not work properly or may work
improperly under the certain conditions: 2 LKAS Conditions and Limitations P. 309
Beeps and a warning display alert you
that the vehicle is drifting out of a
detected lane.
When you operate the turn signals to chan ge lanes, the system is suspended, and
resumes after the signals are off.
If you make a lane change without operat ing the turn signals, the LKAS alerts
activate, and torque is applied to the steering.
■LKAS camera
Monitors the lane
lines
* Not available on all models