Honda Clarity Plug-in Hybrid (2018 year). Instruction

400

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

Driving

Adaptive Cruise Control (ACC) with Low Speed
Follow (LSF)

Helps maintain a constant vehicle speed and a set following-interval behind a vehicle
detected ahead of yours and, if the detected vehicle comes to a stop, can decelerate
and stop your vehicle, without you having to keep your foot on the brake or the
accelerator.
When ACC with LSF slows your vehicle by applying the brakes, your vehicle's brake
lights will illuminate.

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

Important Reminder
As with any system, there are limits to ACC with LSF.
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.

WARNING

Improper use of ACC with LSF can lead to a
crash.

Use ACC with LSF only when driving on
expressways or freeways and in good
weather conditions.

WARNING

ACC with LSF has limited braking capability
and may not stop your vehicle in time to
avoid a collision with a vehicle that quickly
stops in front of you.

Always be prepared to apply the brake
pedal if the conditions require.

When to use

■

Vehicle speed for ACC with LSF: A vehicle is detected ahead within ACC with LSF
range – ACC with LSF operates at speeds up to 90 mph (145 km/h).
No vehicle is detected within ACC with LSF range – ACC with LSF operates at the
speed of 25 mph (40 km/h) or above.

■

Gear position for ACC with LSF: In

(

The radar sensor is
in the front grille.

The camera is
located behind
the rearview
mirror.

Continued

401

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

Driving

■

How to activate the system

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

When the MAIN button is pressed, both ACC with
LSF and the Lane Keeping Assist System (LKAS) are
either turned on or off.

ACC with LSF may not work properly under certain
conditions.

2 ACC with LSF Conditions and Limitations

P. 406

When not using ACC with LSF: 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 LSF under the following
conditions:

•

On roads with heavy traffic 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 LSF 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 facilities with drive through access.

How to use

■

Press the MAIN button
on the steering wheel.

ACC (green) is on in the
instrument panel.
ACC with LSF is ready to
use.

402

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

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 LSF begins.
When driving at 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 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
LSF begins

Press and release

−/SET Button

403

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

Continued

Driving

When ACC with LSF starts operating, the
vehicle icon, interval bars and set speed
appear on the driver information interface.

When you use ACC with LSF, 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 vehicle in a straight line.

Set Vehicle Speed

Set Vehicle Interval

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

404

Driving

■

There is a vehicle ahead

ACC with LSF monitors if a vehicle ahead of you enters the ACC with LSF range. If a
vehicle is detected doing so, the ACC with LSF 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. 409

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 Operation

When in Operation

If the vehicle ahead of you slows down abruptly, or if
another vehicle is detected cutting in front of you,
the beeper sounds, a message appears on the driver
information interface.
Depress the brake pedal, and keep an appropriate
interval from the vehicle ahead.

Even if the interval between your vehicle and the
vehicle detected ahead is short, ACC with LSF may
start accelerating 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, gradually 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 LSF detecting range. Change the ACC
Forward Vehicle Detect Beep setting.

2 Customized Features P. 306

Beep

ACC with LSF Range: 394 ft. (120 m)

A vehicle icon appears on the
driver information interface

Continued

405

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

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 LSF accelerates your
vehicle to the set speed, and then maintains it.

■

When you depress the accelerator pedal

You can temporarily increase the vehicle speed. In this case, there is no audible or
visual alert even if a vehicle is in the ACC with LSF range.
ACC with LSF stays on unless you cancel it. Once you release the accelerator pedal,
the system resumes an appropriate speed for keeping the following-interval while a
vehicle ahead is within the ACC with LSF range.

■

A vehicle detected ahead is within ACC with LSF range and slows to a stop

Your vehicle also stops, automatically. The
Stopped message appears on the driver
information interface.
When the vehicle ahead of you starts again,
the vehicle icon on the driver information
interface blinks. If you press the RES/+ or
−/SET button, or depress the accelerator
pedal, ACC with LSF operates again within the
prior set speed.

When in Operation

Limitations
You may need to use the brake to maintain a safe
interval when using ACC with LSF. Additionally, ACC
with LSF may not work properly under certain
conditions.

2 ACC with LSF Conditions and Limitations

P. 406

WARNING

Exiting a vehicle that has been stopped
while the ACC with LSF 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 LSF.

A vehicle icon with dotted-line
contour appears on the driver
information interface

When 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.

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

406

Driving

The system may automatically shut off and the ACC indicator will come on under
certain conditions. Some examples of these conditions are listed below. Other
conditions may reduce some of the ACC functions.

2 Front Sensor Camera P. 394

■

Environmental conditions

Driving in bad weather (rain, fog, snow, etc.).

■

Roadway conditions

Driving on a snowy or wet roadway (obscured lane marking, vehicle tracks, reflected
lights, road spray, high contrast).

■

Vehicle conditions

• The outside of the windshield is blocked by dirt, mud, leaves, wet snow, etc.
• An abnormal tire or wheel condition (Wrong sized, varied size or construction,

improperly inflated tire, etc.).

• The camera temperature gets too high.
• The parking brake is applied.
• When the front grille is dirty.
• The vehicle is tilted due to a heavy load or suspension modifications.
• When tire chains are installed.

■

ACC with LSF Conditions and Limitations

ACC with LSF Conditions and Limitations

The radar sensor for ACC with LSF is shared with the
collision mitigation braking system

(CMBS

2 Collision Mitigation Braking System

(CMBS

) P. 439

You can read about handling information for the
camera equipped with this system.

2 Front Sensor Camera P. 394

Always keep the radar sensor cover clean.

Never use chemical solvents or polishing powder for
cleaning the sensor cover. Clean it with water or a
mild detergent.

Do not put a sticker on the radar sensor cover or
replace the radar sensor cover.

If you need the radar sensor to be repaired, or
removed, or the radar sensor cover is strongly
impacted, turn off the system by pressing the MAIN
button and take your vehicle to an authorized Honda
Clarity Plug-In Hybrid dealer.

Have your vehicle checked by an authorized Honda
Clarity Plug-In Hybrid dealer if you find any unusual
behavior of the system (e.g., the warning message
appears too frequently).

407

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

Continued

Driving

■

Detection limitations

• A vehicle or pedestrian suddenly crosses in front of you.
• The interval between your vehicle and the vehicle or pedestrian 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 or pedestrian 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 or a pedestrian in front of you.

• The speed difference between your vehicle and a vehicle or pedestrian 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.

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

408

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 Speed

To Adjust the Vehicle Speed

If a vehicle detected ahead is going at a speed slower
than your increased set speed, ACC with LSF may not
accelerate your 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. 121

To increase speed

To decrease speed

409

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

Continued

Driving

Press the (interval) button to change the
ACC with LSF following-interval.
Each time you press the 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

410

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

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 because a vehicle detected ahead of you has
stopped, the interval between the two vehicles will vary based on the ACC with LSF
interval setting.

Following-interval

When the Set Speed is:

50 mph (80 km/h)

65 mph (104 km/h)

Short

83 feet

25 meters

1.1 sec

100 feet

31 meters

1.1 sec

Middle

110 feet

33 meters

1.5 sec

142 feet

43 meters

1.5 sec

Long

154 feet

47 meters

2.1 sec

200 feet

61 meters

2.1 sec

Extra
Long

204 feet

62 meters

2.8 sec

265 feet

81 meters

2.8 sec

Continued

411

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

Driving

To cancel ACC with LSF, do any of the
following:
• Press the CANCEL button.
• Press the MAIN button.

ACC with LSF indicator goes off.

• Depress the brake pedal.

When the LSF function has stopped the
vehicle, you cannot cancel ACC with LSF
by depressing the brake pedal.

■

To Cancel

To Cancel

Resuming the prior set speed: After you have
canceled ACC with LSF, 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 LSF 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

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

412

Driving

■

Automatic cancellation

The beeper sounds and a message appears on the driver information interface when
ACC with LSF is automatically canceled. Any of these conditions may cause the ACC
with LSF 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

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 LSF range is too close to your

vehicle.

• The camera behind the rearview mirror, or the area around the camera, including

the windshield, gets dirty.

The ACC with LSF automatic cancellation can be also triggered by the following
causes. In these cases, the parking brake will be automatically applied.
• The driver’s seat belt is unfastened when the vehicle is stationary.
• The vehicle stops for more than 10 minutes.
• The power system is turned off.

In the following cases, a buzzer sounds, ACC with LSF is deactivated, and the
message Cruise Cancelled: Slope Too Steep. Watch Downhill Speed appears in
the driver information interface.
• While descending a long slope and the vehicle has repeatedly applied the brakes

to maintain the set speed.

Automatic cancellation

Even though ACC with LSF has been automatically
canceled, you can still resume the prior set speed.
Wait until the condition that caused ACC with LSF to
cancel improves, then press the RES/+ button.

Continued

413

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

Driving

Press and hold the (interval) button for one
second. Cruise Mode Selected appears on
the driver information interface for two
seconds, and then the mode switches to
Cruise.
To switch back to ACC with LSF, press and
hold the button again for one second. ACC
Mode Selected appears on the driver
information 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.

Each time you press the RES/+ or –/SET button, the vehicle speed 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.

■

To Switch ACC with LSF to Cruise Control

To Switch ACC with LSF 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. 121

ACC with
LSF ON

Cruise
Control ON

■

To Set the Vehicle Speed

■

To Adjust the Vehicle Speed

When Driving

Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)

414

Driving

To cancel cruise control, do any of the following:
• Press the CANCEL button.
• Press the MAIN button.
• Depress the brake pedal.
The CRUISE CONTROL indicator goes off.

■

To Cancel

To Cancel

Resuming the prior set speed:
After cruise control has been canceled, you can still
resume the prior set speed by pressing the RES/+
button while driving at a speed of at least 25 mph (40
km/h) or more.

You cannot set or resume in the following situations:

•

When vehicle speed is less than 25 mph (40 km/h).

•

When the MAIN button is turned off.

At vehicle speeds of 22 mph (35 km/h) or less, cruise
control canceled automatically.

415

When Driving

Lane Keeping Assist System (LKAS)

Continued

Driving

Lane Keeping Assist System (LKAS)

Provides steering input to help keep the vehicle in the middle of a detected lane and
provides tactile and visual alerts if the vehicle is detected drifting out of its lane.

Lane Keeping Assist System (LKAS)

Important Safety Reminders
The LKAS is for your convenience only. It is not a
substitute for your vehicle control. The system does
not work if you take your hands off the steering
wheel or fail to steer the vehicle.

2 Driver Information Interface Warning and

Information Messages P. 119

Do not place objects on the instrument panel.
Objects may reflect on the front windshield and
prevent correct detection of the traffic lanes.

The LKAS only alerts you when lane drift is detected
without a turn signal in use. The LKAS may not detect
all lane markings or lane departures; accuracy will
vary based on weather, speed, and lane marker
condition. It is always your responsibility to safely
operate the vehicle and avoid collisions.

The LKAS is convenient when it is used on freeways.

The LKAS may not work properly or may work
improperly under the certain conditions:

2 LKAS Conditions and Limitations P. 420

You can read about handling information for the
camera equipped with this system.

2 Front Sensor Camera P. 394

When you operate the turn signals to change lanes, the system is suspended, and
resumes after the signals are off.
() If you make a lane change without operating the turn signals, the LKAS
alerts activate, and torque is applied to the steering.

■

Front Sensor
Camera

Monitors the lane
lines

■

Tactile and visual alerts

Rapid vibrations on the steering wheel
and a warning display alert you that
the vehicle is drifting out of a
detected lane.

■

Steering input assist

The system applies torque to the steering to keep the vehicle between the left
and right lane lines. The applied torque becomes stronger as the vehicle gets
closer to either of the lane lines.

Honda Clarity Plug-in Hybrid (2018 year). Instruction - part 26