2021 HONDA ACCORD SEDAN ECO mode

uuWhen Driving uTire Pressure Monitoring System (TPMS)
448
Driving
You must start TPMS calibration every time you:
• Adjust the pressure in one or more tires.
• Rotate the tires.
• Replace one or more tires.
Before calibrating the TPMS:
• Set the cold tire pressu re in all four tires.
2Checking Tires P. 577
Make sure:
•The vehicle is at a complete stop.
• The transmission is in
(P.
• The power mode is in ON.
■TPMS Calibration1TPMS Calibration
TPMS cannot be calibrated if a compact spare tire is
installed.
The calibration process requires approximately 30
minutes of cumulative driv ing at speeds between 30-
60 mph (48-97 km/h).
During this period, if the pow er mode is set to ON and
the vehicle is not moved wi thin 45 seconds, you may
notice the low tire pressu re/TPMS indicator comes on
briefly. This is normal and indicates that the calibration
process is not yet complete.

449
uuWhen Driving uTire Pressure Monitoring System (TPMS)
Driving
You can calibrate the system from the
customized feature on the audio/information
screen.
1. Set the power mode to ON.
2. Press the button.
3. Select Settings .
4. Select Vehicle .
5. Select TPMS Calibration .
6. Select Calibrate .
• If the Calibration Failed To Start.
message appears, repeat steps 5-6.
• The calibration process finishes
automatically.1TPMS Calibration
If the tire chains
* are installed, remove them before
calibrating the TPMS.
If the low tire pressure/TPMS indicator comes on even
when the properly inflated specified regular tires are
installed, have your vehi cle checked by a dealer.
We recommend that the tires be replaced with the
same brand, model, and size as the originals. Ask a
dealer for details.
* Not available on all models

450
uuWhen Driving uTire Pressure Monitoring System (TPMS) - Required Federal Explanation
Driving
Tire Pressure Monitoring System (TPMS) - Required
Federal Explanation
Each tire, including the spare (i f provided), should be checked
monthly when cold and inflated to the inflation pressure
recommended by the vehicle manufacturer on the vehicle placard
or tire inflation pressure label.
(If your vehicle has tires of a different size than the size indicated
on the vehicle placard or tire infl ation pressure label, you should
determine the proper tire inflat ion pressure for those tires.)
As an added safety feature, your vehicle has been equipped with
a tire pressure monitoring system (TPMS) that illuminates a low
tire pressure telltale
when one or more of your tire s is significantly under-inflated.
Accordingly, when the low tire pr essure telltale illuminates, you
should stop and check your tires as soon as possible, and inflate
them to the proper pressure.
Driving on a significantly under-in flated tire causes the tire to
overheat and can lead to tire failure. Under-inflat ion also reduces
fuel efficiency and tire tread li fe, and may affect the vehicle's
handling and stopping ability.
U.S. models

452
uuWhen Driving uBlind spot information System*
Driving
Blind spot information System*
Is designed to detect vehicles in specified alert zones adjacent to your vehicle,
particularly in harder to see areas commonly known as “blind spots.”
When the system detects vehi cles approaching from behind in adjacent lanes, the
appropriate indicator comes on for a few se conds, providing assistance when you
change lanes.
■How the system works
1 Blind spot information System*
Important Safety Reminder
Like all assistance systems, the blind spot information
system has limitations. Over reliance on the blind spot
information system may result in a collision.
The blind spot information system alert indicator may
not come on under the following conditions:
•A vehicle does not stay in the alert zone for more
than two seconds.
•A vehicle is parked in a side lane.•The speed difference betw een your vehicle and the
vehicle you are passing is greater than 6 mph (10
km/h).
•An object not detected by the radar sensors
approaches or passes your vehicle.
•A vehicle running in the adjacent lane is a
motorcycle or other small vehicle.
3WARNING
Failure to visually confirm that it is safe to
change lanes before doing so may result in
a crash and serious injury or death.
Do not rely only on the blind spot
information system wh en changing lanes.
Always look in your mi rrors, to either side
of your vehicle, and behind you for other
vehicles before changing lanes.
Alert zone range
A: Approx. 1.6 ft. (0.5 m)
B: Approx. 10 ft. (3 m)
C: Approx. 10 ft. (3 m) Radar Sensors:
underneath the
rear bumper
corners
Alert ZoneA
B
C
●Your vehicle speed is
between 20 mph (32 km/h)
and 100 mph (160 km/h).
●The transmission is in (D.
* Not available on all models

455Continued
Driving
Honda Sensing®
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.
Honda Sensing ® has following functions.
■The functions which do not requir e switch operations to activate
• Collision Mitigation Braking SystemTM (CMBSTM) 2 P. 458
• Low Speed Braking Control* 2 P. 467
• Road Departure Mitigation (RDM) System 2 P. 496
• Traffic Sign Recognition System 2 P. 500
■The functions wh ich require switch operations to activate
• Adaptive Cruise Control (ACC) with Low Speed Follow
2 P. 472
• Lane Keeping Assist System (LKAS) 2 P. 488
Models with Low Speed Braking Control
Models without Low Speed Braking Control
* Not available on all models

Continued461
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 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

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)