windshield Acura RDX 2017 User Guide
Page 295 of 449
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. 
Page 300 of 449
299
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 
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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 
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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. 91
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. 307
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 
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306
uuWhen Driving uLane Keeping Assist System (LKAS)*
Driving
■The LKAS may automatically be canceled when:
• The camera temperature gets too high.
• The camera behind the rearview mirror, or  the area around the camera, including 
the windshield, gets dirty.
• When driving through a sharp curve.
• When driving at a speed in excess of approximately 90 mph (145 km/h).
• When the ABS or VSA ® systems engage.
A beeper will sound if the LKAS is automatically canceled. 
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307
uuWhen Driving uLane Keeping Assist System (LKAS)*
Continued
Driving
The system may not detect lane markings and therefore may not keep the vehicle in 
the middle of a lane under certain conditions, including the following:
■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.
■LKAS Conditions and Limitations 
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308
uuWhen Driving uLane Keeping Assist System (LKAS)*
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 high.
• 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 
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326
uuBraking uCollision Mitigation Braking SystemTM (CMBSTM)*
Driving
The system may automatically shut off and the CMBSTM indicator will come on under 
certain conditions. Some examples of th ese conditions are listed below. Other 
conditions may reduce some of the CMBS
TM functions.
2 Front Sensor Camera* P. 282
■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 objects and the background.
• Driving into low sunlight (e.g., at dawn or dusk).
• Strong light is reflected onto the roadway.
• Driving in the shadows of trees, buildings, etc.
• Roadway objects or structures are misint erpreted as vehicles and pedestrians.
• 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 curvy, winding, or undulating roads.
■CMBSTM Conditions and Limitations
* Not available on all models 
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327
uuBraking uCollision Mitigation Braking SystemTM (CMBSTM)*
Continued
Driving
■Vehicle conditions
• Headlight lenses are dirty or the h eadlights are not properly adjusted.
• The outside of the windshield is blocked by dirt, mud, leaves, wet snow, etc.
• The inside of the windshield is fogged.
• An abnormal tire or wheel condition (wro ng sized, varied size or construction, 
improperly inflated, compact spare tire
*, etc.).
• When tire chains are installed.
• The vehicle is tilted due to a heavy load or  suspension modifications.
• The camera temperature gets too hot.
• Driving with the parking brake applied.
• When the radar sensor in the front grille gets dirty.
■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, winding or und ulating road that makes it difficult for 
the sensor to properly detect a vehicle in front of you.
• The speed difference between your vehi cle and a vehicle in front of you is 
significantly large.
• An oncoming vehicle suddenly comes in front of you.
• Another vehicle suddenly comes in fr ont of you at an intersection, etc.
• Your vehicle abruptly crosses over in front of an oncoming vehicle.
* Not available on all models 
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362
uuMaintenance Under the Hood uRefilling Window Washer Fluid
Maintenance
Refilling Window  Washer Fluid
Check the amount of window washer fluid using the  1/2 mark on the reservoir.
If the level is low, fill the washer reservoir.
If the washer fluid is low, a message  appears on the multi-information display.
Pour the washer fluid carefully.  Do not overflow the reservoir.1Refilling Window Washer Fluid
NOTICE
Do not use engine antifreeze or a vinegar/water 
solution in the windshield washer reservoir.
Antifreeze can damage y our vehicle’s paint. A 
vinegar/water solution ca n damage the windshield 
washer pump.
1/2  Mark
Models with washer level sensor