2021 HONDA ACCORD SEDAN ECO mode

11
Quick Reference Guide
Auto Idle Stop Function*
To improve fuel economy, the engine stops and then restarts as detailed below. When Auto Idle Stop is on, the Auto Idle Stop in dicator
(green) comes on. (P437)
At Continuously variable transmissionEngine status
Deceleration
Stop
Start-up
Stop the vehicle and depress the brake pedal.
Automatic Brake Hold Off Automatic Brake Hold On
On
Keep the brake pedal depressed. With the automatic brake hold system
activated, you can release the brake pedal
when the indicator comes on.
Canada
U.S.
Off
Release the brake pedal. With the automatic brake hold system
activated, depress the accelerator pedal.
Restarting
*
Not available on all models

12
Quick Reference Guide
Eco Assist® System (P 436)
Ambient Meter●With SPORT mode* off, the color of the ambient
meter changes to green to indicate that the
vehicle is being driven in a fuel efficient manner.
ECON Button (P 436)
Helps maximize fuel economy.
ECON Mode Indicator (P 100)
Comes on when the ECON button is pressed.
The message is displayed for a few seconds when
the ECON
button is pressed. Ambient Meter
*2
*1
*3
*4
*1 : Models without the adaptive damper system
*2 : Models with the adaptive damper system
*3 : Models without SPORT mode
*4 : Models with SPORT mode

25
Quick Reference Guide
VSA® On and Off (P 444)
●The Vehicle Stability AssistTM (VSA ®)
system helps stabilize the vehicle during
cornering, and helps maintain traction
while accelerating on loose or slippery
road surfaces.
●VSA ® comes on automatically every time
you start the engine.
●To partially disable or fully restore VSA ®
function, press and ho ld the button until
you hear a beep.
CMBSTM On and Off
(P 461)
●When a possible frontal collision is likely
unavoidable, the CMBSTM can help you to
reduce the vehicle speed and the severity
of the collision.
●The CMBSTM is turned on every time you
start the engine.
●To turn the CMBSTM on or off, use the
safety support switch.
Tire Pressure Monitoring
System (TPMS)
(P 446)
●Detects a change in tire conditions and
overall dimensions due to decrease in tire
pressures.
●The TPMS is turned on automatically
every time you start the engine.
●A calibration procedure must be
performed when certain conditions arise.
Refueling (P 533)
Fuel recommendation: Unlead ed gasoline, pump octane number 87 or higher
Fuel tank capacity: 14.8 US gal (56 L)
aUnlock the driver’s
door.
bPress the area indicated
by the arrow to release
the fuel fill door. You
will hear a click.
cAfter filling, wait about
five seconds before
removing the filler
nozzle.Wait for five seconds
* Not available on all models

27
Quick Reference Guide
Adaptive Cruise Control
(ACC) with Low Speed
Follow
(P472)
Helps maintain a constant vehicle speed and
a set following-interval behind a vehicle
detected ahead of yours and, if the detected
vehicle comes to a stop, can decelerate and
stop your vehicle, without you having to
keep your foot on the brake or the
accelerator.
Lane Keeping Assist
System (LKAS)
(P 488)
Provides steering input to help keep the
vehicle in the middle of a detected lane and
provides tactile and visual alerts if the
vehicle is detected drifting out of its lane.
Road Departure
Mitigation (RDM) System
(P 496)
Alerts and helps to assist you when the
system detects a possibility of your vehicle
unintentionally crossing over detected lane
markings and/or leaving the roadway
altogether.
Traffic Sign Recognition
System
(P500)
Reminds you of road sign information, such
as the current speed limit, your vehicle has
just passed through, showing it on the
driver information interface and the head-
up display
*.
* Not available on all models

31
Quick Reference Guide
The rear door cannot be
opened from inside the
vehicle. Why?Check if the childproof lock is in the
lock position. If so, open the rear door
with the outside door handle.
To cancel this function, slide the lever
up to the unlock position.
Why do the doors lock
after I unlocked the doors?If you do not open the doors within 30 seconds, the doors are
relocked automatically for security.
Why does the beeper
sound when I open the
driver’s door?The beeper sounds when:
●The power mode is in ACCESSORY.
●The exterior lights are left on.
●The Auto Idle Stop is in operation.
Why does a beeper sound
when I walk away from the
vehicle after I close the
door?The beeper sounds if you move outside the walk away auto lock
operating range before the door completely closes.
2Locking the doors (Walk away auto lock ®) (P172)
Why does the beeper
sound when I start driving?The beeper sounds when the driver and/or front passenger are
not wearing their seat belts.
1.5 L engine models

Continued39
uuSeat Belts uAbout Your Seat Belts
Safe Driving
■Proper use of seat belts
Follow these guidelines for proper use:
• All occupants should sit upright, well back in the seat, and remain in that position
for the duration of the trip. Slouching and leaning reduce the effectiveness of the
belt and can increase the chance of serious injury in a crash.
• Never place the shoulder part of a lap/shoulder seat belt under your arm or
behind your back. This could cause very serious injuries in a crash.
• Two people should never use the same seat belt. If they do, they could be very
seriously injured in a crash.
• Do not put any accessories on the seat be lts. Devices intended to improve comfort
or reposition the shoulder part of a seat belt can reduce the protective capability
and increase the chance of serious injury in a crash.
■Front seats
The seat belt system includes an indicator on the
instrument panel to remind the driver or a front
passenger or both to fasten their seat belts.
If you set the power mode to ON and a seat
belt is not fastened, a beeper will sound and
the indicator will blink. After a few seconds,
the beeper will stop and the indicator will
come on and remain illuminated until the seat
belt is fastened.
The beeper will periodically sound and the
indicator will blink while the vehicle is moving
until the seat belt is fastened.
■Seat Belt Reminder
1 About Your Seat Belts
Most states and all Canadian provinces and territories
require you to w ear seat belts.
1Seat Belt Reminder
The indicator will also co me on if a front passenger
does not fasten their seat belt within six seconds after
the power mode is set to ON.
When no one is sitting in th e front passenger’s seat,
the indicator will not come on and the beeper will not
sound.
The indicator also may no t come on and the beeper
may not sound when the occupant is not heavy
enough to trigger the weight sensor. Such occupants
(e.g., infants and smaller children) should be moved
to the rear seat as a deploying front airbag likely will
injure or kill them. 2 Protecting Child Passengers P. 64

47
uuAirbags uAirbag System Components
Continued
Safe Driving
The front, front knee, front side, and side
curtain airbags are de ployed according to
the direction and severity of impact. Both
side curtain airbags are deployed in a
rollover. The airbag system includes:
aTwo SRS (Supplemental Restraint System)
front airbags. The driver’s airbag is stored
in the center of the steering wheel; the
front passenger’s airbag is stored in the
dashboard. Both are marked SRS
AIRBAG.
bTwo knee airbags. The driver’s knee
airbag is stored under the steering
column; the front passenger’s knee
airbag is stored under the glove box.
Both are marked SRS AIRBAG.
cTwo side airbags, one for the driver and
one for the front passenger. The airbags
are stored in the outer edges of the seat-
backs. Both are marked SIDE AIRBAG.
dTwo side curtain ai rbags, one for each
side of the vehicle. The airbags are stored
in the ceiling, above the side windows.
The front and rear pillars are marked
SIDE CURTAIN AIRBAG .
eAn electronic control unit that, when the
power mode is in ON, continually
monitors information about the various
impact sensors, seat and buckle sensors,
rollover sensor, airbag activators, seat
belt tensioners, and other vehicle
information. During a crash event the
unit can record such information.
fAutomatic front seat belt tensioners. In
addition, the driver’s and front
passenger’s seat belt buckles incorporate
sensors that detect whether or not the
belts are fastened.
gDriver’s seat position sensor. This sensor
detects the driver’s s eat slide position to
help determine the optimal deployment
of the driver’s airbag.
hWeight sensors in the front passenger’s
seat. The sensors are used for occupant
classification to activate or deactivate the
front passenger’s airbag.
iImpact sensors that can detect a
moderate-to-severe front or side impact.
jAn indicator on the dashboard that alerts
you that the front passenger’s front
airbag has been turned off.
kAn indicator on the instrument panel that
alerts you to a possib le problem with your
airbag system or seat belt tensioners.
lA rollover sensor that can detect if your
vehicle is about to ro ll over and signal the
control unit to deploy both side curtain
airbags.

uuAirbags uFront Airbags (SRS)
50
Safe DrivingFront airbags are designed to inflate du ring moderate-to-severe frontal collisions.
When the vehicle decelerates suddenly, the sensors send information to the control
unit which signals one or both front airbags to inflate.
A frontal collision can be either head-on or angled between two vehicles, or when a
vehicle crashes into a stationary object, such as a concrete wall.
While your seat belt restrains your torso, the
front airbag provides supplemental protection
for your head and chest.
The front airbags deflate immediately so that
they won’t interfere with the driver’s visibility
or the ability to steer or operate other
controls.
The total time for inflation and deflation is so fast that most occupants are not
aware that the airbags deployed until th ey see them lying in front of them.
■Operation
■How the Front Airbags Work1How the Front Airbags Work
Although the driver’s and fr ont passenger’s airbags
normally inflate within a spli t second of each other, it
is possible for only one airbag to deploy. This can
happen if the severity of a collision is at the margin,
or threshold, that determines whether or not the
airbags will deploy. In such cases, the seat belt will
provide sufficient protec tion, and the supplemental
protection offered by the airbag would be minimal.