HONDA ACCORD SEDAN 2021 Owner's Manual (in English)

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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

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uuHonda Sensing ®u Collision Mitigation Braking SystemTM (CMBSTM)
Driving
The system has three alert stages for a possible collis ion. However, depending on circumstances, the CMBSTM may not go through all of
the stages before initiating the last stage.
■Collision Alert Stages
Distance between vehiclesCMBSTM
The radar sensor detects a vehicleAudible & Visual WARNINGSBraking
Stage oneThere is a risk of a collision with the
vehicle ahead of you.
When in Long, visual and audible alerts come
on at a longer distance from a vehicle ahead
than in Normal setting, and in Short, at a
shorter distance than in Normal.
—
Stage
twoThe risk of a collision has increased,
time to respond is reduced.
Visual and audible alerts.
Lightly
applied
Stage three The CMBSTM determines that a
collision is unavoidable.Forcefully applied
Your Vehicle Vehicle Ahead
Normal
Short
Long
Your Vehicle Vehicle Ahead
Your
Vehicle Vehicle
Ahead

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uuHonda Sensing ®u Collision Mitigation Braking SystemTM (CMBSTM)
Driving
When you turn the CMBSTM on and off, do the
following.
1. Press the safety support switch.
2. Roll the left selector wheel to the
symbol and push it.
u The message appears on the driver
information interface when the system
becomes on or off.
The CMBS
TM is turned on every time you start
the engine, even if you turned it off the last
time you drove the vehicle.
■CMBSTM On and Off1 CMBSTM On and Off
The CMBS
TM may automatically shut off, and the
safety support indicator (amb er) will come and stay
on under certain conditions:
2 CMBS
TM Conditions and Limitations P. 462
When the CMBS
TM is activated, it will continue to
operate even if the accele rator pedal is partially
depressed. However, it w ill be canceled if the
accelerator pedal is fully depressed.
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.
Left Selector Wheel
Safety Support Switch

uuHonda Sensing ®u Collision Mitigation Braking SystemTM (CMBSTM)
462
Driving
The system may automatically shut off and the safety support indicator (amber) will
come on under certain conditions. Some ex amples of these conditions are listed
below. Other conditions may reduce some of the CMBS
TM functions.
2 Front Sensor Camera P. 506
2 Radar Sensor P. 508
■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 interi or of the windshield.
• Driving at night or in a dark place such as a tunnel (due to low-light conditions,
pedestrians or other vehicles may not be detected).
■Roadway conditions
• Driving on a snowy or wet roadway (obs cured lane marking, vehicle tracks,
reflected lights, road spray, high contrast).
• Driving on curvy, winding, or undulating roads.
• The road is hilly or the vehicle is approaching the crest of a hill.
■CMBSTM Conditions and Limitations1Collision Mitigation Braking SystemTM (CMBSTM)
Have your vehicle checked by a dealer if you find any
unusual behavior of the system (e.g., the warning
message appears too frequently).

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uuHonda Sensing ®u Collision Mitigation Braking SystemTM (CMBSTM)
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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

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uuHonda Sensing ®u Collision Mitigation Braking SystemTM (CMBSTM)
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• When there is a group of people in front of your vehicle walking together side by
side.
• Surrounding conditions or belongings of the pedestrian alter the pedestrian’s
shape, preventing the system from recogn izing that the person is a pedestrian.
• When the pedestrian is shorter than about 3.3 feet (1 me ter) or taller than about
6.6 feet (2 meters) in height.
• When a pedestrian blends in with the background.
• When a pedestrian is bent over or squa tting, or when their hands are raised or
they are running.
• When several pedestrians are walking ahead in a group.
• When the camera cannot correctly identify that a pedestrian is present due to an
unusual shape (holding luggage, body position, size).
■Automatic shutoff
The CMBSTM may automatically shut itself off and the safety support indicator
(amber) comes and stays on when:
• The temperature inside the system is high.
• You drive off-road or on a mountain ro ad, or curved and winding road for an
extended period.
• An abnormal tire condition is detected (wrong tire size, flat tire, etc.).
• The camera behind the rearview mirror, or the area around the camera, including
the windshield, gets dirty.
Once the conditions that caused the CMBS
TM to shut off improve or are addressed
(e.g., cleaning), the system comes back on.
Limitations applicable to pedestrian detection only

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Driving
The CMBSTM may activate even when you are aware of a vehicle ahead of you, or
when there is no vehicle ahead. Some examples of this are:
■When Passing
Your vehicle approaches another vehicle ah ead of you and you change lanes to pass.
■At an intersection
Your vehicle approaches or passes another ve hicle that is making a left or right turn.
■With Little Chance of a Collision

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uuHonda Sensing ®u Collision Mitigation Braking SystemTM (CMBSTM)
Driving
■On a curve
When driving through curves, your vehicle comes to a point where an oncoming
vehicle is right in front of you.
■Through a low bridge at high speed
You drive under a low or narrow bridge at high speed.
■Speed bumps, road work sites, tr ain tracks, roadside objects, etc.
You drive over speed bumps, steel road plates, etc., or yo ur vehicle approaches train
tracks or roadside objects (such as a traffi c sign and guard rail) on a curve or, when
parking, stationary vehicles and walls.

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uuHonda Sensing ®u Low Speed Braking Control*
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Driving
Low Speed Braking Control*
Using sonar sensors located on the front a nd rear bumpers, the vehicle detects if
there is danger of a potential collision with a wall or other obstacle. The system is
designed to alert you when a potential collision is determined, as well as assist in
reducing speed, avoiding collisions, and reducing collision severity.1 Low Speed Braking Control*
When trapped in a railway crossing, the system may
detect the crossing gate as an obstacle and activate.
If this happens, Low Spee d Braking Control will
automatically cancel after a certain amount of time
after stopping, so conti nue to move forward.
If the system is activated by curbs/parking curbs or
level differences on the road and you are unable to
park or clear them, turn the system off.
3WARNING
It is not possible for the Low Speed Braking
Control to avoid collisions or reduce
damage from collision s in all situations
where the accelerator has been depressed
accidentally or with too much force.
Overreliance on this system may result in a
collision and serious injury or death.
It is your responsibility to always check your
shift position, pedal location and
surroundings, and safely operate the
vehicle.
* 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