2021 HONDA ACCORD SEDAN brake

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uuHonda Sensing ®u Collision Mitigation Braking SystemTM (CMBSTM)
Driving
■When the system activates
You can change the distance ( Long/Normal /Short ) between vehicles at which the
system's earliest collision alert will come on through audio/information screen
setting options.
2 Customized Features P. 352
1When the system activates
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. 462
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

463
uuHonda Sensing ®u Collision 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 (wrong sized, varied size or construction,
improperly inflated, co mpact 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 high.
• Driving with the parking brake applied.
• When the radar sensor at the lower part of the front bumper gets dirty.
• The vehicle is towing a trailer
*.
• Driving at night or in a dark place (e.g., a tunnel) with the headlights off.
■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 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 fr ont 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 vehicle suddenly slows down.
* Not available on all models

uuHonda Sensing ®u Low Speed Braking Control*
468
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.
■How the System Works1 Low Speed Braking Control*
For directions on the prop er handling of the sonar
sensors, please refer to the following page.
2 Sonar Sensors
* P. 509
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, when using a chassis dy namometer or free rollers
for inspection or when pu tting your vehicle through a
conveyor type car wash.
Do not make any modificati ons to the suspension or
the system may not operate correctly.
Always use the size and ty pe of tires recommended,
make, and amount of wear. If these differ, the system
may not operate correctly.
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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uuHonda Sensing ®u Adaptive Cruise Control (ACC) with Low Speed Follow
Driving
Adaptive Cruise Control (A CC) 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.
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 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 qu ickly stops in front
of you.
Always be prepared to apply the brake
pedal if the cond itions require.
When to use
■Vehicle speed for ACC wi th 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.
■Shift position for ACC with Low Speed Follow: In ( D or (S*.
The radar sensor is at the
lower part of the front
bumper.
The camera is
located behind
the rearview
mirror.
* Not available on all models

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uuHonda Sensing ®u Adaptive Cruise Control (ACC) with Low Speed Follow
Driving
■How to activate the system1Adaptive Cruise Control (ACC) with Low Speed Follow
For directions on the prop er handling of the radar
sensor, refer to the following page.
2 Radar Sensor P. 508
You can read about handling information for the
camera equipped with this system. 2 Front Sensor Camera P. 506
ACC with Low Speed Follow may not work properly
under certain conditions.
2 ACC with Low Speed Follow Conditions
and Limitations P. 478
When not using ACC with Low Speed Follow: Turn
off adaptive cruise by pressing the button.
Do not use ACC with Low Speed Follow under the
following conditions:
•On roads with heavy traf fic or while driving in
continuous stop and go traffic.
•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.
How to use
■Press the button on the
steering wheel.
(white) is on in the instrument panel.
ACC with Low Speed Follow is ready to use.

uuHonda Sensing ®u Adaptive Cruise Control (ACC) with Low Speed Follow
474
Driving
When driving at about 25 mph (40 km/h) or above: Take your foot off the
pedal and press the SET/– button when you reach the desired speed. The moment
you release the button, 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, pressing the button 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.
When ACC with Low Speed Follow starts
operating, the vehicle icon, interval bars and set
speed appear on the driver information interface.
When you use ACC with Low Speed Follow,
Straight Driving Assist (a feature of the Electric
Power Steering system) is activated.
By enabling the steering system to
automatically compensate for natural steering
pull, Straight Driving Assist makes it easier for
you to keep your vehicl e in a straight line.
■To Set the Vehicle Speed1To Set the Vehicle Speed
You can switch the displayed set speed
measurements on the driver information interface or
audio/information screen between mph and km/h. 2 Speed/Distance Units P. 151
2 Customized Features P. 352
The Vehicle Stability Assist
TM (VSA ®) system, Vehicle
Stability AssistTM (VSA ®) OFF, adaptive cruise control
(ACC) with Low Speed Follow, safety support and
low tire pressure/TPMS indicators may come on in
amber along with a message in the driver information
interface when you set the power mode to ON after
reconnecting the battery.
Drive a short distance at more than 12 mph (20 km/h).
Each indicator should go off. If any do not, have your
vehicle checked by a dealer.
On when ACC with Low
Speed Follow begins Press and release
SET/− button
(green)
Set Vehicle Speed
Set Vehicle Interval (green)

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uuHonda Sensing ®u Adaptive Cruise Control (ACC) with Low Speed Follow
Driving
■There is a vehicle ahead
ACC with Low Speed Follow m onitors if a vehicle ahead of you enters the ACC with
Low Speed Follow range. If a vehicle is de tected 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 following interval from the vehicle ahead.
2 To Set or Change Following-interval P. 482
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 ahead of you slows down abruptly, or if
another vehicle cuts in front of you, the beeper
sounds, a message appears on the driver information
interface, and the he ad-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
driver information interface.
* Not available on all models

uuHonda Sensing ®u Adaptive Cruise Control (ACC) with Low Speed Follow
476
Driving
■There is no vehicle ahead
Your vehicle maintains the set speed without
having to keep your foot on the brake or
accelerator pedal.
If there previously was a vehicle detected
ahead that kept your vehicle from traveling at
the set speed, ACC with Low Speed Follow
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 alert even if a vehicle is in the ACC with Low Speed Follow range.
ACC with Low Speed Follow stays on unless you cancel it. Once you release the
accelerator pedal, the system resume s an appropriate speed for keeping the
following interval while a vehicle ahead is within the ACC with Low Speed Follow
range.
1 When in Operation
Even if the interval betw een your vehicle and the
vehicle detected ahead is short, ACC with Low Speed
Follow may start accelerati ng your vehicle under the
following circumstances:
•The vehicle ahead of you is going at almost the
same speed as, or faster than, your vehicle.
•A vehicle that cuts in front of you is going faster
than your vehicle, gradua lly increasing the interval
between the vehicles.
You can also set the system to beep when a vehicle in
front of you comes in and goes out of the ACC with
Low Speed Follow detect ing range. Change the ACC
Forward Vehicle Detect Beep setting.
2 Customized Features P. 352
Limitations
You may need to use the brake to maintain a safe
interval when using ACC with Low Speed Follow.
Additionally, ACC with Lo w Speed Follow may not
work properly under certain conditions.
2 ACC with Low Speed Follow Conditions
and Limitations P. 478
A vehicle icon with dotted-line
contour appears on the driver
information interface.