Page 490 of 709

uuAcuraWatchTMuCollision Mitigation Braking SystemTM (CMBSTM)
488
Driving
■When the system activates
You can change the distance ( Long/Normal /Short ) between vehicles at which the
system’s earliest collision alert will co me on through audio/information screen
setting options.
2 Customized Features P. 359
1Collision Mitigation Braking SystemTM (CMBSTM)
The camera in the CMBS
TM is also designed to detect
pedestrians.
However, this pedestrian detection feature may not
activate or may not detect a pedestrian in front of
your vehicle under certain conditions.
Refer to the ones indicating the pedestrian detection
limitations from the list. 2 CMBS
TM Conditions and Limitations P. 491
The head-up warning uses a lens located at the front
end of the dashboard.
Do not cover the lens or spill any liquid on it.
Models with Head-up display
Lens
The system provides visual and audible alerts of a possible collision, and stops if the
collision is avoided.
u Take appropriate action to prevent a collision (apply the brakes, change
lanes, etc.).
Beep Head-up Warning
Lights
*Visual Alerts
Audible Alert
* Not available on all models
22 ACURA RDX-31TJB6300.book 488 ページ 2021年8月2日 月曜日 午前11時0分
Page 494 of 709
492
uuAcuraWatchTMuCollision Mitigation Braking SystemTM (CMBSTM)
Driving
■Vehicle conditions
• Headlight lenses are dirty or the headlights are not properly adjusted.
• The outside of the windshie ld is blocked by dirt, mud, leaves, wet snow, etc.
• The inside of the windshield is fogged.
• An abnormal tire or wheel condition (incor rect sizes, varied sizes or construction,
improperly inflated, compact spare tire
*, etc.).
• When tire chains are installed.
• The vehicle is tilted due to a heav y load or suspension modifications.
• The camera temperature gets too high.
• Driving with the parking brake applied.
• When the radar sensor behind the emblem gets dirty.
• The vehicle is towing a trailer.
* Not available on all models
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Page 495 of 709

493
uuAcuraWatchTMuCollision Mitigation Braking SystemTM (CMBSTM)
Continued
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 vehicl e 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 undulating road that makes it difficult for
the sensor to properly detect a vehicle in front of you.
• The speed difference between your vehicle an d a vehicle or pedestrian in front of
you is significantly large.
• An oncoming vehicle suddenly comes in front of you.
• Another vehicle suddenly comes in front of you at an intersection, etc.
• Your vehicle abruptly crosses over in front of an oncoming vehicle.
• When driving through a narrow iron bridge.
• When the lead vehicl e suddenly slows down.
22 ACURA RDX-31TJB6300.book 493 ページ 2021年8月2日 月曜日 午前11時0分
Page 499 of 709

497
uuAcuraWatchTMuLow Speed Braking Control*
Continued
Driving
Low Speed Braking Control*
Using sonar sensors located on the front an d rear bumpers, this system detects if
there is danger of a potential collision with a wall or other obstacle during normal
driving. The system then assists in avoiding collisions and reducing damage from
impact through assistive braking.1 Low Speed Braking Control*
If the Low Speed Braking Control activates in a
situation where you do not want automatic brake
application (such as when the vehicle is between two
railroad crossing gates), si mply press the brake pedal
to deactivate the system and then continue to drive
as intended.
3WARNING
The Low Speed Braking Control System
cannot avoid all collisions and may not
reduce damage in each situation where the
accelerator is mistaken ly or aggressively
pressed.
Overreliance on the system may result in a
collision with serious injury or death.
Always check your surroundings, your shift
position, and your pedal use. Driver
remains responsible for safely operating
the vehicle.
* Not available on all models
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Page 500 of 709

uuAcuraWatchTMuLow Speed Braking Control*
498
Driving
The Low Speed Braking Control provides a visual and audible alert when the vehicle
is moving between approximately 1 and 6 mph (2 and 10 km/h) and there is the
possibility of a collision with a detected wall or other obstacle, as well as providing
assistance with braking.
If the only rear sensors are turned off usin g the parking sensor system, the assistive
braking is not working when reversing.
2 Turning off All Rear Sensors P. 559
■How the System Works1Low Speed Braking Control*
For directions on the prop er handling of the sonar
sensors, please refer to the following page.
2 Sonar Sensors
* P. 544
The vehicle will release the brake and start moving a
few seconds after the system is activated. To keep the
vehicle stopped, keep the brake pedal depressed or
put the transmission into
( P.
In order to prevent the sy stem from activating when
not needed, always turn it off during vehicle
maintenance, when loading on ships, trucks, and so
on, or when using a chas sis dynamometer or free
rollers for inspection or when washing the car in
conveyor type car wash machine.
Beep Beep
The vehicle
applies brake Driver
depresses
brake pedal Remove
brake after
maintaining
stationary
position
Stop
Audible Alert
* Not available on all models
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Page 504 of 709

502
uuAcuraWatchTMuAdaptive Cruise Control (ACC) with Low Speed Follow
Driving
Adaptive Cruise Control (ACC) with Low Speed
Follow
Helps maintain a constant vehicle speed a nd a set following-interval behind a vehicle
detected ahead of yours and, if the detect ed vehicle comes to a stop, can decelerate
and stop your vehicle, without you having to keep your foot on the brake or the
accelerator.
When ACC with Low Speed Follow slows y our vehicle by applying the brakes, your
vehicle’s brake lights will illuminate.
1 Adaptive Cruise Control (ACC) with Low Speed Follow
Important Reminder
As with any system, there are limits to ACC with Low
Speed Follow. Use the brake pedal whenever
necessary, and always keep a safe interval between
your vehicle and other vehicles.
ACC with Low Speed Follow cannot be activated if
Intelligent Dynamics System setting is SNOW.
3WARNING
Improper use of ACC with Low Speed
Follow can lead to a crash.
Use ACC with Low Speed Follow only when
driving on expressways or freeways and in
good road and weather conditions.
3WARNING
ACC with Low Speed Follow has limited
braking capability and may not stop your
vehicle in time to avoid a collision with a
vehicle that quickly stops in front of you.
Always be prepared to apply the brake
pedal if the conditions require.
When to use
■Vehicle speed for ACC with Low Speed Follow: A vehicle is detected ahead
within ACC with Low Speed Follow range – ACC with Low Speed Follow
operates at speeds up to 90 mph (145 km/h).
No vehicle is detected within ACC with Low Speed Follow range – ACC with
Low Speed Follow operates at the speed of 25 mph (40 km/h) or above.
■Gear position for ACC with Low Speed Follow: In ( D or ( S.
The radar sensor
is behind the
emblem.
The camera is
located behind
the rearview
mirror.
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Page 506 of 709

uuAcuraWatchTMuAdaptive Cruise Control (ACC) with Low Speed Follow
504
Driving
When driving at about 25 mph (40 km/h) or above: Take your foot off the
pedal and press down the RES/+/ SET/– switch when you re ach the desired speed.
The moment you release the switch, the set speed is fixed, and ACC with Low Speed
Follow begins.
When driving slower than about 25 mph (40 km/h): If the vehicle is moving
and the brake pedal is not depressed, pres sing the switch fixes the set speed to
about 25 mph (40 km/h) regardless of current vehicle speed. If the vehicle is
stationary, you can set the vehicle speed even with the brake pedal depressed.
■To Set the Vehicle Speed1 Adaptive Cruise Control (ACC) with Low Speed Follow
Do not use ACC with Low Speed Follow under the
following conditions:
•On roads with frequent la ne-change or continuous
stop and go traffic, ACC with Low Speed Follow
cannot keep an appropriate distance between your
vehicle and the vehicle ahead of you.
•On roads with sharp turns.•On roads with steep downhill sections, as the set
vehicle speed can be exceeded by coasting. In such
cases, ACC with Low Speed Follow will not apply
the brakes to maintain the set speed.
•On roads with toll collection facilities or other
objects between lanes of traffic, or in parking
areas, or faci lities with driv e through access.
1To Set the Vehicle Speed
You can switch the displayed set speed
measurements on the multi- information display or
audio/information screen between mph and km/h. 2 Speed/Distance Units P. 142
2 Customized Features P. 359
On when ACC with Low
Speed Follow beginsPress and release
RES/+/SET/– switch (green) is on.
22 ACURA RDX-31TJB6300.book 504 ページ 2021年8月2日 月曜日 午前11時0分
Page 508 of 709

uuAcuraWatchTMuAdaptive Cruise Control (ACC) with Low Speed Follow
506
Driving
■There is a vehicle ahead
ACC with Low Speed Follow monitors if a ve hicle ahead of you enters the ACC with
Low Speed Follow range. If a vehicle is detected doing so, the ACC with Low Speed
Follow system maintains or decelerates your vehicle’s set speed in order to keep the
vehicle’s set followi ng-interval from the vehicle ahead.
2To Set or Change Following-interval P. 513
When a vehicle whose speed is slower than
your set speed is detected in front of you, your
vehicle starts to slow down.
■When in Operation1 When in Operation
If the vehicle detected ahead of you slows down
abruptly, or if a nother vehicle is de tected cutting in
front of you, a beeper so unds and a message appears
on the multi-information display, and the head-up
warning lights
* flash.
Depress the brake pedal, and keep an appropriate
interval from the vehicle ahead.
Beep Head-up
Warning Lights
*
ACC with Low Speed Follow Range: 394 ft. (120 m)
A vehicle icon appears on the
multi-information display.
* Not available on all models
22 ACURA RDX-31TJB6300.book 506 ページ 2021年8月2日 月曜日 午前11時0分