2021 HONDA CLARITY FUEL CELL Owner's Manual (in English)

Continued399
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow
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.
• 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.1ACC with Low Speed Follow Conditions and Limitations
Have your vehicle checked by an authorized Honda
Clarity Fuel Cell 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 vehicle checked by an authorized
Honda Clarity Fuel Cell 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.
21 CLARITY FCV CSS-31TRT6400_02.book 399 ページ ２０２０年９月２５日　金曜日　午 後３時１５分

uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow
400
Driving
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 press and hold 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 with Low Speed
Follow may not accelerate y our vehicle. This is to
maintain the set interval between your vehicle and
the vehicle ahead.
You can switch the displayed set speed
measurements on the driver information interface
between mph and km/h. 2 Gauges P. 118
To increase speed
To decrease speed
21 CLARITY FCV CSS-31TRT6400_02.book 400 ページ ２０２０年９月２５日　金曜日　午 後３時１５分

401
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow
Continued
Driving
Press the (interval) button to change the
ACC with Low Speed Follow following-
interval.
Each time you press th e 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
21 CLARITY FCV CSS-31TRT6400_02.book 401 ページ ２０２０年９月２５日　金曜日　午 後３時１５分

402
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow
Driving
The higher your vehicle’s following-speed is, the longer the short, middle, long or
extra long following-interval becomes. See the following examples for your
reference.
When your vehicle stops automatically beca use a vehicle detected ahead of you has
stopped, the interval between the two vehi cles will vary based on the ACC with Low
Speed Follow interval setting.
Following-intervalWhen the Set Speed is:
50 mph (80 km/h)65 mph (104 km/h)
Short
83 feet
25 meters 1.1 sec100 feet
31 meters 1.1 sec
Middle
110 feet
33 meters
1.5 sec137 feet
42 meters
1.4 sec
Long
154 feet
47 meters 2.1 sec200 feet
61 meters 2.1 sec
Extra
Long204 feet
62 meters 2.8 sec265 feet
81 meters 2.8 sec
21 CLARITY FCV CSS-31TRT6400_02.book 402 ページ ２０２０年９月２５日　金曜日　午 後３時１５分

Continued403
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow
Driving
To cancel ACC with Low Speed Follow, do any
of the following:
• Press the CANCEL button.
• Press the MAIN button.
u ACC with Low Speed Follow indicator
goes off.
• Depress the brake pedal while the vehicle is
moving forward.
■To Cancel1To Cancel
Resuming the prior set speed: After you have
canceled ACC with Low Speed Follow, you can
resume the prior set speed while it is still displayed.
Press the RES/+ button.
The set speed cannot be set or resumed when ACC
with Low Speed Follow 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
21 CLARITY FCV CSS-31TRT6400_02.book 403 ページ ２０２０年９月２５日　金曜日　午 後３時１５分

uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow
404
Driving
■Automatic cancellation
The beeper sounds and a message appears on the driver information interface and
the head-up display when ACC with Low Sp eed Follow is automatically canceled.
Any of these conditions may cause the ACC with Low Speed Follow to automatically
cancel:
• Bad weather (rain, fog, snow, etc.)
• When the radar sensor in the front grille gets dirty.
• An abnormal tire condition is detected, or the tires are skidding.
• Driving on a mountainous road, or driving off road for extended periods.
• Abrupt steering wheel movement.
• When the ABS, VSA ® or CMBS
TM is activated.
• When the ABS or VSA ® system indicator comes on.
• When the vehicle is stopped on a very steep slope.
• When you manually apply the parking brake.
• When the detected vehicle within the ACC with Low Speed Follow range is too
close to your vehicle.
• When a detected vehicle goe s out of the ACC with Low Speed Follow range while
your vehicle is stationary.
• The camera behind the rearview mirror, or the area around the camera, including
the windshield, gets dirty.
The ACC with Low Speed Follow automatic ca ncellation can be also triggered by the
following causes. In these cases, the pa rking brake will be automatically applied.
• The driver’s seat belt is unfasten ed when the vehicle is stationary.
• The vehicle stops for mo re than 10 minutes.
• The power system is turned off.
1Automatic cancellation
Even though ACC with Low Speed Follow has been
automatically canceled, you can still resume the prior
set speed. Wait until the condition that caused ACC
with Low Speed Follow to cancel improves, then
press the RES/+ button.
21 CLARITY FCV CSS-31TRT6400_02.book 404 ページ ２０２０年９月２５日　金曜日　午 後３時１５分

Continued405
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow
Driving
Press and hold the (interval) button for one
second. Cruise Mode Selected appears on
the driver informatio n interface for two
seconds, and then the mode switches to
Cruise.
To switch back to ACC with Low Speed
Follow, press and hold the button again for
one second. ACC Mode Selected appears on
the driver informatio n interface for two
seconds.
■When to use
Desired speed in a range above roughly 25 mph (40 km/h) ~.
Take your foot off the pedal and press the –/SET button when you reach the desired
speed.
The moment you release the –/SET button, the set speed is fixed, and cruise control
begins. The CRUISE CONTROL indicator comes on.
■To Switch ACC with Low Speed Follow to Cruise Control1To Switch ACC with Low Speed Follow to Cruise Control
Always be aware which mode you are in. When you
are driving in Cruise mode, the system will not assist
you to maintain a following-interval from a vehicle
ahead of you.
You can switch the displayed set speed
measurements on the driver information interface
between mph and km/h.
2 Gauges P. 118
ACC with
Low Speed
Follow ON Cruise
Control ON
■To Set the Vehicle Speed
21 CLARITY FCV CSS-31TRT6400_02.book 405 ページ ２０２０年９月２５日　金曜日　午
後３時１５分

406
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow
Driving
Each time you press the RES/+ or –/SET button, the vehicle sp eed is increased or
decreased by about 1 mph (1.6 km/h).
If you keep the RES/+ or –/SET button pressed, the vehicle speed increases or
decreases until you release it. This speed is then set.
When you use cruise control, Straight Driv ing Assist (a feature of the Electric Power
Steering system) is activated.
By enabling the steering system to automa tically compensate for natural steering
pull, Straight Driving Assist makes it easier for you to keep your vehicle in a straight
line.
■To Adjust the Vehicle Speed
21 CLARITY FCV CSS-31TRT6400_02.book 406 ページ ２０２０年９月２５日　金曜日　午 後３時１５分