2020 HONDA ACCORD SEDAN Owner's Manual (in English)

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uuHonda Sensing ®u Adaptive Cruise Control (ACC)*
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 ve hicle from traveling at
the set speed, ACC accelerates your vehicle to
the set speed, and then maintains it.
■When you depress the accelerator pedal
You can temporarily increase the vehicle speed . In this case, there is no audible or
visual alert even if a vehicle is in the ACC range.
ACC stays on unless you cancel it. Once you release the accelerator pedal, the
system resumes an appropriate speed for keeping the following interval while a
vehicle ahead is within the ACC range.
1 When in Operation
Even if the interval betw een your vehicle and the
vehicle detected ahead is short, ACC may start
accelerating your vehi cle 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
detecting range. Change the ACC Forward Vehicle
Detect Beep setting.
2 Customized Features P. 383
Limitations
You may need to use the brake to maintain a safe
interval when using ACC. Additionally, ACC may not
work properly under certain conditions.
2 ACC Conditions and Limitations P. 544
A vehicle icon with dotted-line
contour appears on the driver
information interface.
1When you depress the accelerator pedal
While the accelerator pedal is depressed, the system
does not apply the brakes to keep the following
interval, as well as the BRAKE message on the driver
information interface does not appear.
2 When in Operation P. 542

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Driving
The system may automatically shut off and the ACC indicator will come on under
certain conditions. Some examples of th ese conditions are listed below. Other
conditions may reduce some of the ACC functions.
■Environmental conditions
• Driving in bad weather (rain, fog, snow, etc.).
■Roadway conditions
• Driving on a snowy or wet roadway (obs cured lane marking, vehicle tracks,
reflected lights, road spray, high contrast).
■Vehicle conditions
• The outside of the windshie ld is blocked by dirt, mud, leaves, wet snow, etc.
• An abnormal tire or wheel condition (Wrong sized, varied size or construction,
improperly inflated, comp act spare tire, etc.).
• The camera temperature gets too high.
• The parking brake is applied.
• When the radar sensor cover is dirty.
• When the front of the vehicle tilts up due to heavy cargo in the trunk or rear seats.
• When tire chains
* are installed.
■ACC Conditions and Limitations1ACC Conditions and Limitations
For directions on the prop er handling of the radar
sensor, refer to the following page. 2 Radar Sensor P. 574
You can read about handling information for the
camera equipped with this system. 2 Front Sensor Camera P. 572
Always keep the radar sensor cover clean.
Never use chemical solvents or polishing powder for
cleaning the sensor cover. Clean it with water or a
mild detergent.
Do not put a sticker on the radar sensor cover or
replace the radar sensor cover.
If you need the radar sensor to be repaired, or
removed, or the radar se nsor cover is strongly
impacted, turn off the system by pressing the MAIN
button and take your vehicle to a dealer.
Have your vehicle checked by a dealer if you find any
unusual behavior of the system (e.g., the warning
message appears too frequently).
If the front of the vehicle is impacted in any of the
following situations, the ra dar sensor may not work
properly. Have your vehi cle checked by a dealer:
•The vehicle mounted onto a bump, curb, chock,
embankment, etc.
•You drive the vehicle where the water is deep.•Your vehicle has a frontal collision.
* Not available on all models

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Driving
■Detection limitations
• A vehicle suddenly crosses in front of you.
• The interval between your vehicle and the vehicle 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 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 or 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 vehi cle and a vehicle in front of you is
significantly large.
• An oncoming vehicle suddenly comes in front of you.
• Your vehicle abruptly crosses over in front of an oncoming vehicle.

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• When driving through a narrow iron bridge.
• When the vehicle ahead of you brakes suddenly.
• When the vehicle ahead of you has a unique shape.
• When your vehicle or the vehicle ahead of you is driving on one edge of the lane.
Radar detects upper section of
an empty carrier truck. Panel truck, tanker
truck, etc.

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Increase or decrease the vehicle speed using the RES/+ or SET /– button on the
steering wheel.
• Each time you press the RES/+ or SET /– button, the vehicle speed is increased or
decreased by about 1 mph or 1 km/h accordingly.
• If you keep pressing the RES/+ or SET/– button, the vehicle speed increases or
decreases by about 5 mph or 5 km/h accordingly.
■To Adjust the Vehicle Speed1 To Adjust the Vehicle Speed
If a vehicle detected ahead is going at a speed slower
than your increased set speed, ACC may not
accelerate your vehicle. This is to maintain the set
interval between your vehi cle and the vehicle ahead.
When you depress the accelerator pedal and then
push and release the SET/– button, the current speed
of the vehicle is set.
To increase speed
To decrease speed

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Press the (interval) button to change the
ACC following interval.
Each time you press the button, the following
interval (the interval behind a vehicle detected
ahead of you) setting cycles through extra
long, long, middle, and short following
intervals.
Determine the most appropriate following
interval setting based on your specific driving
conditions. Be sure to adhere to any following
interval requirements set by local regulation.
■To Set or Change Following Interval
Interval Button

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The higher your vehicle’s following speed is , the longer the short, middle, long or
extra long following inte rval becomes. See the foll owing examples for your
reference.
Following IntervalWhen the Set Speed is:
50 mph (80 km/h)65 mph (104 km/h)
Short
84 feet
26 meters
1.1 sec102 feet
31 meters
1.1 sec
Middle
111 feet
34 meters 1.5 sec139 feet
43 meters 1.5 sec
Long
155 feet
48 meters 2.1 sec202 feet
62 meters 2.1 sec
Extra
Long215 feet
66 meters
3.0 sec282 feet
86 meters
3.0 sec

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Driving
To cancel ACC, do any of the following:
• Press the CANCEL button.
• Press the MAIN button.
u The ACC indicator (green) goes off.
• Depress the brake pedal.
• Depress the clutch pedal for five seconds or
more.
■To Cancel1To Cancel
Resuming the prior set speed: After you have
canceled ACC, you can resume the prior set speed
while it is still displayed. Press the RES/+ button when
driving at a speed of at least 25 mph (40 km/h) or
more.
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.
CANCEL Button
MAIN Button