sensor HONDA ACCORD SEDAN 2021 (in English) Workshop Manual

506
uuHonda Sensing ®u Front Sensor Camera
Driving
Front Sensor Camera
The camera, used in systems such as LKAS, RDM, ACC with Low Speed Follow,
CMBSTM and traffic sign recognition system, is designed to detect an object that
triggers any of the systems to operate their functions.
This camera is located behind the rearview
mirror.
To help reduce the likelihood that high interior
temperatures will cause the camera’s sensing
system to shut off, when parking, find a shady
area or face the front of the vehicle away from
the sun. If you use a reflective sun shade, do
not allow it to cover the camera housing.
Covering the camera can concentrate heat on
it.
■Camera Location and Handling Tips
1 Front Sensor Camera
Never apply a film or attach any objects to the
windshield, the hood, or th e front grille that could
obstruct the camera’s fiel d of vision and cause the
system to operate abnormally.
Scratches, nicks, and othe r damage to the windshield
within the camera’s fiel d of vision can cause the
system to operate abnormall y. If this occurs, we
recommend that you replac e the windshield with a
genuine Honda replacem ent windshield. Making
even minor repairs within th e camera’s field of vision
or installing an aftermarket replacement windshield
may also cause the system to operate abnormally.
After replacing the winds hield, have a dealer
recalibrate the camera. Pr oper calibration of the
camera is necessary for the system to operate
properly.
Do not place an object on the top of the instrument
panel. It may reflect onto the windshield and prevent
the system from detecting lane lines properly.
Front Sensor
Camera

507
uuHonda Sensing ®u Front Sensor Camera
Driving
1Front Sensor Camera
If the Some Driver Assist Systems Cannot
Operate: Camera Temperature Too High message
appears:
•Use the climate control system to cool down the
interior and, if necessary, also use defroster mode
with the airflow directed towards the camera.
•Start driving the vehicle to lower the windshield
temperature, which cool s down the area around
the camera.
If the Some Driver Assist Systems Cannot
Operate: Clean Front Windshield message
appears:
•Park your vehicle in a sa fe place, and clean the
windshield. If the message does not disappear after
you have cleaned the windshield and driven for a
while, have your vehicle checked by a dealer.

508
uuHonda Sensing ®u Radar Sensor
Driving
Radar Sensor
The radar sensor is at the lower part of the
front bumper.
• Do not change the position of the radar
sensor or any of the surrounding parts.
• Do not apply paint, stickers, or attach non-
genuine accessories to the front part of the
radar sensor or the surrounding area. Be
particularly careful that any custom license
plate frame or other accessory does not
block any part of the radar beam path (see
adjacent illustration).1Radar Sensor
Avoid strong impacts to the radar sensor cover.
For the CMBS
TM to work properly:
•Always keep the radar sensor cover clean.•Never use chemical solvents or polishing powder
for cleaning the sensor cove r. Clean it with water
or a mild detergent.
•Do not put a sticker on th e 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 syst em by using the safety
support switch and take y our vehicle to a dealer.
2 CMBS
TM On and Off P. 461
If the vehicle is involved in any of the following
situations, the radar sensor may not work properly.
Have your vehicle checked by a dealer:
•Your vehicle is involved in a frontal collision.•Your vehicle drives th rough deep water or is
submerged in deep water.
•Your vehicle strongly strikes a bump, curb, chock,
or embankment that coul d jar the radar sensor.
Radar
Sensor
Do not apply paint, stickers, or
attach accessories to the front
part of the radar sensor or the
surrounding area.

509
uuHonda Sensing ®u Sonar Sensors*
Driving
Sonar Sensors*
■Location and range of sensors
The sonar sensors are situated in the front and rear bumpers.1Sonar Sensors*
For the sonar sensors to work properly, do not:•Place stickers or other objects on or around the
sensors.
•Hit the area around the sensors.•Attempt to take apart any sensor.
•Put any accessories on or around the sensors.
Consult with a dealer if:
•A sensor has been subjected to shock.
•Work needs to be done to the area around a
sensor.
In the following cases, the sonar sensors may not
work properly. Have your ve hicle checked by a dealer.
•The front or rear bumper has made contact with a
hill, parking block, curb, embankment, etc.
•The vehicle has been involv ed in frontal or rear
collision.
•The vehicle has been driven through a deep
puddle.
Sonar Sensors Sonar Sensors
Sensor Range
* Not available on all models

522
uuParking Your Vehicle uParking Sensor System*
Driving
Parking Sensor System*
The corner and center sensors monitor obstacles around your vehicle, and the
beeper, driver information interface and audio/informatio n screen let you know the
approximate distance between your vehicle and the obstacle.
■The sensor location and range
1 Parking Sensor System*
Even when the system is on, always confirm if there is
no obstacle near your ve hicle before parking.
The system may not work properly when:
•The sensors are covered with snow, ice, mud or
dirt.
•The vehicle is on uneven su rface, such as grass,
bumps, or a hill.
•The vehicle has been out in hot or cold weather.•The system is affected by devices that emit
ultrasonic waves.
•Driving in bad weather.
The system may not sense:
•Thin or low objects.•Sonic-absorptive materials, such as snow, cotton,
or sponge.
•Objects directly under the bumper.
Do not put any accessories on or around the sensors.Within about 24 in (60 cm) or less
Front Corner Sensors
Rear Corner Sensors
Front*: Within about 39 in (100 cm) or less
Rear: Within about 43 in (110 cm) or less
Rear Center Sensors
Front Center Sensors*
* Not available on all models

Continued523
uuParking Your Vehicle uParking Sensor System*
Driving
■Parking sensor system on and off
With the power mode in ON, press the
parking sensor system button to turn on or off
the system. The indicator in the button comes
on when the system is on.
The front corner, rear corner and rear center
sensors start to detect an obstacle when the
transmission is in
(R, and the vehicle speed is
less than 5 mph (8 km/h).
The front corner and front center
* sensors
start to detect an obstacle when the
transmission is in any position other than
(P
or
( R, and the vehicle speed is less than 5 mph
(8 km/h).
1 Parking Sensor System*
When you set the power mode to ON, the system will
be in the previously selected condition.
* Not available on all models

uuParking Your Vehicle uParking Sensor System*
524
Driving
■Screen Operation
You can switch between split view off and
split view on by touching the split screen tab.1Screen Operation
The split screen tab disappears, and the split view
returns to the last camera view mode under the
following conditions:
•If the parking sensor system is turned off.•If there is a malfunction in the system.
Split Screen
Tab
Split View Off
Split View On

525
uuParking Your Vehicle uParking Sensor System*
Continued
Driving
■When the distance between your vehicle and detected obstacles becomes shorter
*1:At this stage, only the center sensors detect obstacles.
Interval between beepsDistance between the Bumper and ObstacleIndicatorDriver information interface/
Audio/Information Screen
Corner SensorsCenter Sensors
Moderate—
Front*: About 39-24 in
(100-60 cm)
Rear: About 43-24 in
(110-60 cm)
Comes on in Yellow*1
ShortAbout 24-18 in (60-45 cm) About 24-18 in (60-45 cm)
Comes on in Amber
Very shortAbout 18-14 in (45-35 cm) About 18-14 in (45-35 cm)
ContinuousAbout 14 in
(35 cm) or lessAbout 14 in
(35 cm) or lessComes on in Red
Indicators light up where the
sensor detects an obstacle.
Indicators light up where the
sensor detects an obstacle.
Audio/Information Screen
Driver information interface
* Not available on all models

uuParking Your Vehicle uParking Sensor System*
526
Driving
1. Make sure that the parking sensor system is not activated. Set the power mode to
VEHICLE OFF.
2. Press and hold the parking sensor system button, and set the power mode to ON.
3. Keep pressing the button for 10 seconds. Release the button when the indicator
in the button flashes.
u The beeper sounds once.
4. Press the button again. The indi cator in the button goes off.
u The beeper sounds twice. The re ar sensors are now turned off.
To turn the rear sensors on again, follow the above procedure. The beeper sounds
three times when the rear sensors come back on.
■Turning off All Rear Sensors1 Turning off All Rear Sensors
When you put the transmission into
(R, the indicator
in the parking sensor system button blinks as a
reminder that the rear sens ors have been turned off.

527
uuParking Your Vehicle uCross Traffic Monitor*
Continued
Driving
Cross Traffic Monitor*
Monitors the rear corner areas using the radar sensors when reversing, and alerts
you if a vehicle approaching from a rear corner is detected.
The system is convenient when you are backing out of a parking space.1Cross Traffic Monitor*
The parking sensor system’s alerting buzzer overrides
the Cross Traffic Monitor buzzer when the sensors
are detecting obstacles at the closest range.
3CAUTION
Cross Traffic Monitor cannot detect all
approaching vehicles and may not detect
an approaching vehicle at all.
Failure to visually confirm that it is safe to
back up the vehicle before doing so may
result in a collision.
Do not solely rely on the system when
reversing; always also use your mirrors, and
look behind and to the sides of your vehicle
before reversing.
Models with parking sensor system
* Not available on all models