At temp Acura RDX 2018 Service Manual

uuWhen Driving uAdaptive Cruise Control (ACC)*
290
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. 108
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. 291

Continued291
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. 284
■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. 324
You can read about handling information for the
camera equipped with this system. 2 Front Sensor Camera
* P. 284
* Not available on all models

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

uuWhen Driving uLane Keeping Assist System (LKAS)*
304
Driving
Provides assistance to keep the vehicle in the center of the lane. When the vehicle
nears a white or yellow line, steering force of the electric power steering will become
stronger.
When the vehicle enters th e warning area, LKAS alerts you with beeps as well a
warning display.
■Lane Keep Support Function1 Lane Keeping Assist System (LKAS)*
The LKAS may not functi on as designed on while
driving in frequent stop and go traffic, or on roads
with sharp curves.
When it fails to detect lanes, the system will
temporarily be cancelled. When lane is detected,
system will recover automatically.
You can read about handling information for the
camera equipped with this system. 2 Front Sensor Camera
* P. 284
If the vehicle drifts toward ei ther left or right lane line
due to the system applying torque, turn off the LKAS
and have your vehicle checked by a dealer.
■Lane Departure Warning Function
Warning area
Warning area
* Not available on all models

uuWhen Driving uLane Keeping Assist System (LKAS)*
306
Driving
3. Keep your vehicle near the center of the
lane while driving.
u The dotted outer lines change to solid
ones once the system starts operating
after detecting the left and right lane
markings.
To cancel the LKAS:
Press the MAIN or LKAS button.
The LKAS is turned off every time you stop the
engine, even if you turned it on the last time
you drove the vehicle.
■To cancel
1 When the System can be Used
The LKAS temporarily deactivates when it fails to
detect lane lines. When the system detects the lines
again, it comes back on automatically.
1To cancel
Pressing the MAIN button also turns ACC on and off.
MAIN Button
LKAS Button

308
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.

309
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

310
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

uuWhen Driving uVehicle Stability Assist (VSA® ), aka Electronic Stability Control (ESC), System
312
Driving
This button is on the driver side control panel.
To turn the VSA® system on and off, press and
hold it until you hear a beep.
VSA® will stop and the indicator will come on.
To turn it on again, press the (VSA ® OFF )
button until you hear a beep.
VSA ® is turned on every time you start the
engine, even if you turned it off the last time
you drove the vehicle.
■VSA ® On and Off1 Vehicle Stability Assist (VSA ®), aka Electronic Stability Control
(ESC), System
Without VSA ®, your vehicle will have normal braking
and cornering ability, bu t it will not have VSA®
traction and stability enhancement.
In certain unusual conditions when your vehicle gets
stuck in shallow mud or fr esh snow, it may be easier
to free it with the VSA ® temporarily switched off.
When the VSA ® system is off, the traction control
system is also off. You should only atte mpt to free
your vehicle with the VSA ® off if you ar e not able to
free it when the VSA ® is on.
Immediately after freeing your vehicle, be sure to
switch VSA ® on again. We do not recommend driving
your vehicle with the VSA ® and traction control
systems switched off.
You may hear a motor sound coming from the
engine compartment while system checks are being
performed immediately after starting the engine or
while driving. This is normal.
VSA ® OFF Indicator