Page 383 of 555
![HONDA CLARITY FUEL CELL 2021 Owners Manual (in English) Continued381
uuWhen Driving uShifting
Driving
■If you want to keep the transmission in (N position [car wash mode]
With the power system on:
1. Depress the brake pedal.
2. Make sure the READY indic HONDA CLARITY FUEL CELL 2021 Owners Manual (in English) Continued381
uuWhen Driving uShifting
Driving
■If you want to keep the transmission in (N position [car wash mode]
With the power system on:
1. Depress the brake pedal.
2. Make sure the READY indic](/manual-img/13/34437/w960_34437-382.png)
Continued381
uuWhen Driving uShifting
Driving
■If you want to keep the transmission in (N position [car wash mode]
With the power system on:
1. Depress the brake pedal.
2. Make sure the READY indicator is on.
3. Press
(N. Within six seconds press and hold (N for two seconds.
u This puts the vehicle in car wash mode which must be used when your vehicle
is pulled through a conveyor type automatic car wash where you or an
attendant do not remain in the vehicle.
If you want to cancel car wash mode, select a position other than
(N.
If you want to reduce fuel consumption in car wash mode:
Press the POWER button during car wash mode.
u Make sure the READY indicator is off.
u The gear position remains in
(N with the power mode in ACCESSORY for 15
minutes, then, it auto matically changes to
(P and the power mode changes to
OFF.
Manually changing to
(P cancels ACCESSORY mode. The (P indicator comes on
and the power mode changes to OFF. You must always shift to
(P when car wash
mode is no longer needed.
1 If you want to keep the transmission in (N position [car wash
mode]
To keep the vehicle in
(N position, you can also
follow this procedure:
While the power system is on, select
( N, and then
within five seconds, press the POWER button.
Note that the transmiss ion may not stay in
(N
position while any of the following indicators is on:
•POWER SYSTEM indicator
•Transmission system indicator
•12-volt battery charging system indicator
21 CLARITY FCV CSS-31TRT6400_02.book 381 ページ 2020年9月25日 金曜日 午 後3時15分
Page 384 of 555

382
uuWhen Driving uShifting
Driving
■Restrictions on selecting a gear position
You cannot select a gear position under certa in circumstances that may lead to a crash.
When the
transmission is in:1. Under these
circumstances:2. If you try to change to the
following:3. The gear position
remains in/changes to:How to change the
gear position
(P
The brake pedal is not
depressed.
Other gear position
(P
Release the accelerator
pedal and depress the
brake pedal.
The accelerator pedal is
depressed.
(N
The vehicle is moving at low
speed without the brake pedal
depressed.
(N
The vehicle is moving at low
speed with the accelerator
pedal depressed.
(N or (DThe vehicle is moving forward.(R
Park your vehicle in a
safe place.(R or (NThe vehicle is moving backward.(D
(R, (N, or (DThe vehicle is moving.(P
(P or (NThe READY indicator is not on.
A gear position other than (P
or
(N(P or (N
Make sure that the
READY indicator
comes on.
21 CLARITY FCV CSS-31TRT6400_02.book 382 ページ 2020年9月25日 金曜日 午 後3時15分
Page 390 of 555

uuWhen Driving uRoad Departure Mitigation (RDM) System
388
Driving
The system becomes ready to start sear ching for lane markings when all the
following conditions are met:
• The vehicle is traveling between about 45 and 90 mph (72 and 145 km/h).
• The vehicle is on a straight or slightly curved road.
• The turn signals are off.
• The brake pedal is not depressed.
• The wipers are not in continuous operation.
• The vehicle is not accelerating or braking, and the steering wheel is not being
turned.
• The system makes a determination that the driver is not actively accelerating,
braking or steering.
Press the RDM button to turn the system on
and off.u The indicator in the button comes on and
the message appears on the driver
information interface when the system is
on.
■How the System Activates
■RDM On and Off
1How the System Activates
The RDM system may automa tically shut off and the
indicator comes and stays on.
2 Indicators P. 88
RDM system function can be impacted when the
vehicle is:
•Not driven within a traffic lane.•Driven on the inside edge of a curve, or outside of
a lane.
•Driven in a narrow lane.
1 RDM On and Off
When you have selected Warning Only from the
customized options using the audio/information
screen, the system does not operate the steering
wheel and braking. 2 Customized Features P. 302
RDM Button
Indicator
21 CLARITY FCV CSS-31TRT6400_02.book 388 ページ 2020年9月25日 金曜日 午 後3時15分
Page 393 of 555

391
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow
Continued
Driving
Adaptive Cruise Control (ACC) with Low Speed
Follow
Helps maintain a constant vehicle speed a nd a set following-interval behind a vehicle
detected ahead of yours and, if the detect ed vehicle comes to a stop, can decelerate
and stop your ve hicle, without yo u having to keep your foot on the brake or the
accelerator.
When ACC with Low Speed Follow slows your vehicle by applying the brakes, your
vehicle’s brake lights will illuminate.
1 Adaptive Cruise Control (ACC) with Low Speed Follow
Important Reminder
As with any system, there are limits to ACC with Low
Speed Follow. Use the brake pedal whenever
necessary, and always keep a safe interval between
your vehicle and other vehicles.
Be careful not to severely impact the radar sensor
cover.
3WARNING
Improper use of ACC with Low Speed
Follow can lead to a crash.
Use ACC with Low Spee d Follow only when
driving on expressways or freeways and in
good weather conditions.
3WARNING
ACC with Low Speed Follow has limited
braking capability and may not stop your
vehicle in time to avoid a collision with a
vehicle that quickly sto ps in front of you.
Always be prepared to apply the brake
pedal if the conditions require.
When to use
■Vehicle speed for ACC with Low Speed Follow: Desired speed in a range above
roughly 25 mph (40 km/h) ~ 90 mph (145 km/h).
■Gear position for ACC with Low Speed Follow: In (D.
The radar sensor is
behind the emblem.
The camera is
located behind
the rearview
mirror.
21 CLARITY FCV CSS-31TRT6400_02.book 391 ページ 2020年9月25日 金曜日 午
後3時15分
Page 394 of 555

uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow
392
Driving
■How to activate the system1Adaptive Cruise Control (ACC) with Low Speed Follow
When the MAIN button is pressed, both ACC with
Low Speed Follow and the Lane Keeping Assist
System (LKAS) are either turned on or off.
ACC with Low Speed Follow may not work properly
under certain conditions.
2 ACC with Low Speed Follow Conditions
and Limitations P. 398
When not using ACC with Low Speed Follow: Turn
off adaptive cruise by pressing the MAIN button. This
also will turn off the Lane Keeping Assist System
(LKAS).
Do not use ACC with Low Speed Follow under the
following conditions:
•On roads with heavy traf fic or while driving in
continuous stop and go traffic.
•On roads with sharp turns.
•On roads with steep downhill sections, as the set
vehicle speed can be exceeded by coasting. In such
cases, ACC with Low Speed Follow will not apply
the brakes to maintain the set speed.
•On roads with toll collection facilities or other
objects between lanes of traffic, or in parking
areas, or faci lities with driv e through access.
How to use
■Press the MAIN button
on the steering wheel. ACC
(green) is on in the
instrument panel, and
ACC (white) is on in the
head-up display.
ACC with Low Speed
Follow is ready to use.
21 CLARITY FCV CSS-31TRT6400_02.book 392 ページ 2020年9月25日 金曜日 午 後3時15分
Page 395 of 555
393
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow
Continued
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, th e 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, pr essing the button fixes the set speed to
about 25 mph (40 km/h) regardless of current vehicle speed. If your vehicle is
stationary, you can set the vehicle speed even with the brake pedal depressed.
■To Set the Vehicle Speed
On when ACC with
Low Speed Follow
begins
Press and release
−/SET Button
21 CLARITY FCV CSS-31TRT6400_02.book 393 ページ 2020年9月25日 金曜日 午 後3時15分
Page 397 of 555

Continued395
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow
Driving
■There is a vehicle ahead
ACC with Low Speed Follow monitors if a vehicle ahead of you enters the ACC with
Low Speed Follow range. If a vehicle is de tected doing so, the ACC with Low Speed
Follow system maintains or decelerates your vehicle’s set speed in order to keep the
vehicle’s set following-interval from the vehicle ahead.
2 To Set or Change Following-Interval P. 401
When a vehicle whose speed is slower than
your set speed is detected in front of you, your
vehicle starts to slow down.
■When in Operation1 When in Operation
If the vehicle ahead of you slows down abruptly, or if
another vehicle is detected cutting in front of you, a
beeper sounds, a message appears on the driver
information interface, and the head-up warning
lights come on.
Depress the brake pedal, and keep an appropriate
interval from the vehicle ahead.
Even if the interval betw een your vehicle and the
vehicle detected ahead is short, ACC with Low Speed
Follow may start accelerati ng your vehicle under the
following circumstances:
•The vehicle ahead of you is going at almost the
same speed as, or faster than, your vehicle.
•A vehicle that cuts in front of you is going faster
than your vehicle, gradua lly increasing the interval
between the vehicles.
You can also set the system to beep when a vehicle
detected in front of you comes in and goes out of the
ACC with Low Speed Follow detecting range. Change
the ACC Forward Vehicle Detect Beep setting.
2 Customized Features P. 302
BeepHead-up Warning
Lights
ACC with Low Speed Follow Range: 394 ft. (120 m)
A vehicle icon appears on the
driver information interface
21 CLARITY FCV CSS-31TRT6400_02.book 395 ページ 2020年9月25日 金曜日 午 後3時15分
Page 398 of 555

uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow
396
Driving
■There is no vehicle ahead
Your vehicle maintains the set speed without
having to keep your foot on the brake or
accelerator pedal.
If there previously was a vehicle detected
ahead that kept your vehicle from traveling at
the set speed, ACC with Low Speed Follow
accelerates your vehicle to the set speed, and
then maintains it.
■When you depress the accelerator pedal
You can temporarily increase th e vehicle speed. In this case, there is no audible or
visual alert even if a vehicle is in the ACC with Low Speed Follow range.
ACC with Low Speed Follow stays on unless you cancel it. Once you release the
accelerator pedal, the system resume s an appropriate speed for keeping the
following-interval wh ile a vehicle ahead is within the ACC with Low Speed Follow
range.
1 When in Operation
Limitations
You may need to use the brake to maintain a safe
interval when using ACC with Low Speed Follow.
Additionally, ACC with Lo w Speed Follow may not
work properly under certain conditions.
2 ACC with Low Speed Follow Conditions
and Limitations P. 398
3WARNING
Exiting a vehicle that has been stopped
while the ACC with Low Speed Follow
system is operating can result in the vehicle
moving without operator control.
A vehicle that moves without operator
control can cause a crash, resulting in
serious injury or death.
Never exit a vehicle when the vehicle is
stopped by ACC with Low Speed Follow.
A vehicle icon with dotted-line
contour appears on the driver
information interface
1When you depress the accelerator pedal
While the accelerator pedal is depressed, the system
does not apply the brakes to keep the following
interval, as well as the BRAKE message on the driver
information interface does not appear.
21 CLARITY FCV CSS-31TRT6400_02.book 396 ページ 2020年9月25日 金曜日 午 後3時15分