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

6
Quick Reference Guide
Quick Reference Guide
Visual Index
❚ (Vehicle Stability AssistTM (VSA®) System OFF) Button (P 444)
❚Safety Support Switch (P 454, 461, 469, 498)
❚Parking Sensor System Button* (P 523)
❚Heated Windshield Button (P 204)
Canadian models
❚Brightness Control (P 205)
❚Head-Up Display (HUD) Buttons* (P 159)❚System Indicators (P 82)
❚Gauges (P 139)
❚Driver Information Interface (P 140)
❚ENGINE START/STOP Button (P 191)
❚Climate Control System (P 240)
❚Rear Window Defogger (P 204)
❚Heated Door Mirror Button* (P 204)
❚Center Pocket (P 225)
❚Hazard Warning Button
❚TRIP Button (P 142)
❚Audio System (P 246)
❚Navigation System*
() See Navigation System Manual
❚Front Seat Heater Buttons* (P 237)
❚Front Seat Heaters and Seat
Ventilation Buttons* (P 238)
❚Passenger Front Airbag Off Indicator
(P 61)

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Quick Reference Guide
Honda Sensing® (P 455)
Honda Sensing ® is a driver support system
which employs the use of three distinctly
different kinds of sensors, a radar sensor
located at the lower part of the front
bumper, a front sensor camera mounted to
the interior side of the windshield, behind
the rearview mirror, and the sonar sensors
located in the front and rear bumpers.
Honda Sensing ® is a driver support system
which employs the use of two distinctly
different kinds of sensors, a radar sensor
located at the lower part of the front
bumper and a front sensor camera mounted
to the interior side of the windshield,
behind the rearview mirror.
Models with Low Speed Braking Control
Models without Low Speed Braking Control
Front Sensor
Camera The camera is located behind
the rearview mirror.
Radar Sensor The radar sensor is at the lower
part of the front bumper.
All models
Sonar Sensors
Models with Low Speed Braking Control
Collision Mitigation
Braking System
TM
(CMBS
TM) (P 458)
Can assist you when there is a possibility of
your vehicle colliding with a vehicle or a
pedestrian detected in front of yours. The
CMBS
TM is designed to alert you when the
potential for a collision is determined, as
well as to reduce your vehicle speed to help
minimize collision severity when a collision is
deemed unavoidable.
Low Speed Braking
Control
* (P 467)
Using sonar sensors lo cated on the front and
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.

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

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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)
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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.

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uuAirbags uFront Airbags (SRS)
Continued
Safe Driving
■When front airbags should not deploy
Minor frontal crashes: Front airbags were designed to supplement seat belts and
help save lives, not to prevent minor scra pes, or even broken bones that might occur
during a less than moderate-to-severe frontal crash.
Side impacts: Front airbags can provide protection when a sudden deceleration
causes a driver or front passenger to move toward the front of the vehicle. Side
airbags and side curtain airbags have been specifically designed to help reduce the
severity of injuries that can occur during a moderate-to-severe side impact which
can cause the driver or passenger to move toward the side of the vehicle.
Rear impacts: Head restraints and seat belts ar e your best protection during a rear
impact. Front airbags cannot provide any significant protection and are not designed
to deploy in such collisions.
Rollovers: In a rollover, your best form of protection is a seat belt or, if your vehicle
is equipped with a rollover sensor, both a seat belt and a side curtain airbag. Front
airbags, however, are not designed to depl oy in a rollover as they would provide
little if any protection.
■When front airbags deploy with little or no visible damage
Because the airbag system senses sudden deceleration, a strong impact to the
vehicle framework or suspension might caus e one or more of the airbags to deploy.
Examples include running into a curb, the edge of a hole, or other low fixed object
that causes a sudden deceleration in th e vehicle chassis. Since the impact is
underneath the vehicle, damage may not be readily apparent.
■When front airbags may not depl oy, even though exterior damage
appears severe
Since crushable body parts absorb crash energy during an impact, the amount of
visible damage does not always indicate proper airbag operation. In fact, some
collisions can result in severe damage but no airbag deployment because the airbags
would not have been needed or would not have provided protection even if they
had deployed.

uuAirbags uFront Airbags (SRS)
52
Safe DrivingThe airbags have advanced features to help reduce the likelihood of airbag related
injuries to smaller occupants.
The driver’s advanced airbag system includes a
seat position sensor.
Based on information from this sensor and the
severity of the impact, the advanced airbag
system determines the optimal deployment of
the driver’s airbag.
■Advanced Airbags1Advanced Airbags
If there is a problem with the driver’s seat position
sensor or the passenger’s s eat weight sensors, the
SRS indicator will come on, and in the event of a
crash, the airbag will deploy (regardless of the driver’s
seating position or passenger’s occupant
classification) with a fo rce corresponding to the
severity of the impact. 2 Supplemental Restraint System (SRS)
Indicator P. 60
Driver’s
Seat
Position
Sensor

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uuAirbags uFront Airbags (SRS)
Safe Driving
The front passenger’s ad vanced airbag system
has weight sensors. The sensors are used for
occupant classification to activate or
deactivate the front passenger’s airbag.
For adult size occupant s, the system will
automatically activate the front passenger’s
airbag. If a small adult sits in the front
passenger seat and the system does not
recognize him/her as an adult, see
2 Passenger Front Airbag Off Indicator P. 61
We advise against allowing a child age 12 or
under to ride in the front passenger’s seat.
However, if you do allow a small child or
infant to ride in the front passenger’s seat, the
system is designed to automatically deactivate
the front passenger’s airbag. Do not let a
small child or infant ride in the front
passenger’s seat if the airbag does not
automatically deactivate.
1 Advanced Airbags
For the advanced front airbags to work properly,
confirm that:
•The occupant is sitting in an upright position,
wearing the seat belt prope rly and the seat back is
not excessively reclined.
•The occupant is not leaning against the door or
center console.
•The occupant’s feet are plac ed on the floor in front
of them.
•There are no objects ha nging from the front
passenger’s seat.
•Only small, lightweight objec ts are in the seat back
pocket.
•The steering wheel and passenger’s side dashboard
are not obstructed by any object.
•No liquid has been spille d on or under the seat.•There is no child seat or other object pressing
against the rear of the seat or seat back.
•There is no rear passenger pushing or pulling on
the back of the front passenger’s seat.
•There are no objects placed under or beside the
front passenger’s seat . Improperly positioned
objects can interfere with the advanced airbag
sensors.
•The head restraint is not contacting the roof.
2 Passenger Front Airbag Off Indicator
P. 61
•The floor mat behind the front passenger’s seat is
set in the correct position evenly on the floor. An
improperly placed mat can interfere with the
advanced airbag sensors. 2Floor Mats P. 591
Passenger’s
Seat
Weight
Sensors

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uuAirbags uSide Airbags
Continued
Safe Driving
Side Airbags
The side airbags help protect the torso and pelvis of the driver or a front passenger
during a moderate-to-severe side impact.
The side airbags are housed in the outside
edge of the driver’s and passenger’s seat-
backs.
Both are marked SIDE AIRBAG.
When the sensors detect a moderate-to-
severe side impact, the control unit signals the
side airbag on the impact side to immediately
inflate.
■Housing Locations
1 Side Airbags
Make sure you and your front seat passenger always
sit upright. Leaning into the path of a side airbag can
prevent the airbag from deploying properly and
increases your risk of serious injury.
Do not attach accessories on or near the side airbags.
They can interfere with the proper operation of the
airbags, or hurt someone if an airbag inflates.
Do not cover or replace the front seat-back covers
without consulting a dealer.
Improperly replac ing or covering front seat-back
covers can prevent your si de airbags from properly
deploying during a side impact.
Housing
Location
■Operation
When
inflated
Side
Airbag

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uuAirbags uSide Airbags
Safe Driving
■When a side airbag deploys with little or no visible damage
Because the airbag system senses sudden acceleration, a strong impact to the side
of the vehicle’s framework can cause a side airbag to deploy. In such cases, there
may be little or no damage, but the side impact sensors detected a severe enough
impact to deploy the airbag.
■When a side airbag may not deploy, even though visible damage appears
severe
It is possible for a side airbag not to deploy during an impact that results in
apparently severe damage. This can occur when the point of impact was toward the
far front or rear of the vehicle, or when the vehicle’s crushable body parts absorbed
most of the crash energy. In either case , the side airbag would not have been
needed nor provided protection even if it had deployed.