
372
uuWhen Driving uRoad Departure Mitigation (RDM) System
Driving
■Roadway conditions
• Driving on a snowy or wet roadway (obscured lane marking, vehicle tracks, 
reflected lights, road  spray, high contrast).
• Driving on a road with temporary lane markings.
• Faint, multiple, or varied lane markings  are visible on the roadway due to road 
repairs or old lane markings.
• The roadway has merging, split, or crossing  lines (e.g., such as at an intersection 
or crosswalk).
• The lane markings are extremely narrow, wide, or changing.
• The vehicle in front of you is  driving near the lane lines.
• The road is hilly or the vehicle is approaching the crest of a hill.
• Driving on rough or unpaved roads, or over bumpy surfaces.
• When objects on the road (c urb, guard rail, pylons, etc.) are recognized as white 
lines (or yellow lines).
• Driving on roads with double lines.
■Vehicle conditions
• Headlight lenses are dirty or the  headlights are not properly adjusted.
• The outside of the windshield is streake d or blocked by dirt, mud, leaves, wet 
snow, etc.
• The inside of the windshield is fogged.
• The camera temperature gets too high.
• An abnormal tire or wheel condition (wrong sized, varied size or construction, 
improperly inflated tire, etc.).
• The vehicle is tilted due to a heav y load or suspension modifications.
• When tire chains are installed.
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Continued379
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
Driving
The system may automatically shut off and the  ACC indicator will come on under 
certain conditions. Some examples of thes e conditions are listed below. Other 
conditions may reduce some of the ACC functions.
2 Front Sensor Camera  P. 367
■Environmental conditions
Driving in bad weather (r ain, fog, snow, etc.).
■Roadway conditions
Driving on a snowy or wet roadway (obscure d lane marking, vehicle tracks, reflected 
lights, road spra y, high contrast).
■Vehicle conditions
• The outside of the windshield is blocked by dirt, mud, leaves, wet snow, etc.
• An abnormal tire or wheel condition (Wro ng 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 Limitations1ACC with LSF Conditions and Limitations
The radar sensor for ACC with LSF is shared with the 
collision mitigation braking system
TM (CMBSTM).
2 Collision Mitigation Braking SystemTM 
(CMBSTM)  P. 411
You can read about handling information for the 
camera equipped with this system. 2 Front Sensor Camera  P. 367
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 se nsor cover is strongly 
impacted, turn off the system by pressing the  MAIN 
button and take your vehicl e to an authorized Honda 
Clarity Electric dealer.
Have your vehicle checked  by an authorized Honda 
Clarity Electric dealer if  you find any unusual behavior 
of the system (e.g., the wa rning message appears too 
frequently).
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394
uuWhen Driving uLane Keeping Assist System (LKAS)
Driving
■Roadway conditions
• Driving on a snowy or wet roadway (obscured lane marking, vehicle tracks, 
reflected lights, road  spray, high contrast).
• Driving on a road with temporary lane markings.
• Faint, multiple, or varied lane markings  are visible on the roadway due to road 
repairs or old lane markings.
• The roadway has merging, split, or crossing  lines (e.g., such as at an intersection 
or crosswalk).
• The lane markings are extremely narrow, wide, or changing.
• The vehicle in front of you is  driving near the lane lines.
• The road is hilly or the vehicle is approaching the crest of a hill.
• Driving on rough or unpaved roads, or over bumpy surfaces.
• When objects on the road (c urb, guard rail, pylons, etc.) are recognized as white 
lines (or yellow lines).
• Driving on roads with double lines.
■Vehicle conditions
• Headlight lenses are dirty or the  headlights are not properly adjusted.
• The outside of the windshield is streake d or blocked by dirt, mud, leaves, wet 
snow, etc.
• The inside of the windshield is fogged.
• The camera temperature gets too high.
• An abnormal tire or wheel condition (wrong sized, varied size or construction, 
improperly inflated tire, etc.).
• The vehicle is tilted due to a heav y load or suspension modifications.
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398
uuWhen Driving uTire Pressure Monitoring System (TPMS)
Driving
Tire Pressure Monitoring System (TPMS)
Instead of directly measuring the pressu re in each tire, the TPMS on this vehicle 
monitors and compares the rolling radius  and rotational characteristics of each 
wheel and tire while you are driving to determine if one or more tires are 
significantly under-inflated. This will caus e the low tire pressure/TPMS indicator to 
come on and a message to appear on  the driver information interface.
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. 459
Make sure:
•The vehicle is at a complete stop.
• The gear position is in 
(P.
• The power mode is in ON.
■TPMS Calibration
1Tire Pressure Monitoring System (TPMS)
The system does not monitor the tires when driving 
at low speed.
Conditions such as low  ambient temperature and 
altitude change directly a ffect tire pressure and can 
trigger the low tire pressure/TPMS indicator to come on.
Tire pressure checked and inflated in:
•Warm weather can beco me under-inflated in 
colder weather.
•Cold weather can become  over-inflated in warmer 
weather.
The low tire pressure/TPMS indicator will not come 
on as a result of over inflation.
The TPMS may not function pr operly if tire type and 
size are mixed. Make sure to use the same size and 
type of tire. 2 Checking and Maintaining Tires  P. 459
The low tire pressure/TPMS indicator may come on 
with a delay or may not come on at all when:
•You rapidly accelerate, decelerate, or turn the 
steering wheel.
•You drive on snowy or slippery roads.•Snow chains are used.
The low tire pressure/TPMS indicator may come on 
under the following conditions:
•There is a heavier and une ven load on the tires, 
such as when towing a trailer, than the condition at 
calibration.
•Snow chains are used.
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402
uuWhen Driving uLaneWatchTM
Driving
LaneWatchTM
LaneWatch is an assistance system that allows you to check the passenger side rear 
areas displayed on the audio/in formation screen when the turn signal is activated to 
the passenger’s side. A camera in the passenger side door mirror monitors these 
areas and allows you to check  for vehicles, in addition to your visual check and use 
of the passenger door mirror. You can also keep the system on for your convenience 
while driving.1 LaneWatchTM
Important Safety Reminder
Like all assistance systems, LaneWatch has 
limitations. Over reliance on LaneWatch may result in 
a collision.
The LaneWatch func tion can be affected by weather, 
lighting (including headli ghts and low sun angle), 
ambient darkness, camera  condition, and loading.
The LaneWatch may not prov ide the intended display 
of traffic to the side and rear under the following 
conditions:
•Your vehicle’s suspension has been altered, 
changing the height of the vehicle.
•Your tires are over or under inflated.•Your tires or wheels are of varied size or 
construction.
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 LaneWatch while 
driving.
Always look in your mirrors, to either side 
of your vehicle, and behind you for other 
vehicles before changing lanes.
12
Camera
Move the turn signal 
lever to the passenger 
side.
Press the LaneWatch 
button.The passenger side view 
display appears on the 
audio/information screen.
The system activates when you:
The system deactivates when you press 
the LaneWatch button again.
Audio/Information Screen
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409
uuBraking uAnti-lock Brake System (ABS)
Driving
Anti-lock Brake System (ABS)
Helps prevent the wheels from locking up,  and helps you retain steering control by 
pumping the brakes rapidly, much faster than you.
The electronic brake distribu tion (EBD) system, which is part of the ABS, also 
balances the front-to-rear braking distribution according to vehicle loading.
You should never pu mp the brake pedal. Let the ABS work for you by always 
keeping firm, steady pressure on the brake pe dal. This is sometimes referred to as 
“stomp and steer.”
■ABS operation
You may hear an operating noise when the  ABS is working. Keep holding the pedal 
firmly down. On dry pavement, you will ne ed to press on the brake pedal very hard 
before the ABS activates. Ho wever, you may feel the ABS  activate immediately if you 
are trying to stop on snow or ice.
ABS may activate when you depres s the brake pedal when driving on:
• Wet or snow covered roads.
• Roads paved with stone.
• Roads with uneven surf aces, such as potholes, cracks, manholes, etc.
When the vehicle speed goes unde r 6 mph (10 km/h), the ABS stops.
■ABS1Anti-lock Brake System (ABS)
NOTICE
The ABS may not function correc tly if you use a tire of 
the wrong size or type.
If the ABS  indicator comes on while driving, there 
may be a problem with the system.
While normal braking will not be affected, there is a 
possibility that the ABS will  not operating. Have your 
vehicle checked by an authorized Honda Clarity 
Electric dealer immediately.
The ABS is not designed  for the purpose of reducing 
the time or distance it takes for a vehicle to stop: It is 
designed to limit brake lockup which can lead to 
skidding and loss of steering control.
In the following cases, yo ur vehicle may need more 
distance to stop than a vehicle without the ABS:
•You are driving on rough or uneven road surfaces, 
such as gravel or snow.
•The tires are equipped  with snow chains.
The following may be observed with the ABS system:
•Motor sounds coming from the motor 
compartment when the brakes are applied, or 
when system checks are being performed after the 
power system has been turned on and while 
vehicle is accelerates.
•Brake pedal and/or the ve hicle body vibration when 
ABS activates.
These vibrations and sou nds are normal to ABS 
systems and are no cause for concern.
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416
uuBraking uCollision Mitigation Braking SystemTM (CMBSTM)
Driving
■Vehicle conditions
• Headlight lenses are dirty or the  headlights are not properly adjusted.
• The outside of the windshie ld is blocked by dirt, mud, leaves, wet snow, etc.
• The inside of the windshield is fogged.
• An abnormal tire or wheel condition (wrong sized, varied size or construction, 
improperly inflated tire, etc.).
• When tire chains are installed.
• The vehicle is tilted due to a heav y load or suspension modifications.
• The camera temperature gets too high.
• Driving with the parking brake applied.
• When the radar sensor in the front grille gets dirty.
■Detection limitations
• A vehicle or pedestrian suddenly crosses in front of you.
• The distance 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 cu rved, 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 vehicle an d a vehicle or pedestrian in front of 
you is significantly large.
• An oncoming vehicle suddenly comes in front of you.
• Another vehicle suddenly comes in front of you at an intersection, etc.
• Your vehicle abruptly crosses over in front of an oncoming vehicle.
• When driving through a narrow iron bridge.
• When the lead vehicle suddenly slows down.
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459
Maintenance
Checking and Maintaining Tires
Checking Tires
To safely operate your vehicle, your tires must be of the proper type and size, in 
good condition with adequate  tread, and properly inflated.
■Inflation guidelines
Properly inflated tires provid e the best combination of hand ling, tread life, and comfort. 
Refer to the driver’s doorjamb label or spec ifications page for the specified pressure.
Underinflated tires wear unevenly, advers ely affect handling and energy economy, 
and are more likely to fail from overheating.
Overinflated tires make your vehicle ride ha rshly, are more prone to road hazards, 
and wear unevenly.
Every day before you drive, look at each of  the tires. If one looks lower than the 
others, check the pressure with a tire gauge.
At least once a month or before long trips , use a gauge to measure the pressure in 
all tires. Even tires in good condition can lose 1–2 psi (10–20 kPa, 0.1–0.2 kgf/cm
2) 
per month.
■Inspection guidelines
Every time you check inflation, also  examine the tires and valve stems.
Look for:
• Bumps or bulges on the side or in the tr ead. Replace the tire if you find any cuts, 
splits, or cracks in the side of the tire . Replace it if you see fabric or cord.
• Remove any foreign objects  and inspect for air leaks.
• Uneven tread wear. Have an authorized  Honda Clarity Electric dealer check the 
wheel alignment.
• Excessive tread wear.
2 Wear Indicators  P. 464
•Cracks or other damage around valve stem.
1Checking Tires
Measure the air pressure when tires are cold. This 
means the vehicle has been parked for at least three 
hours, or driven less than 1 mile (1.6 km). If 
necessary, add or releas e air until the specified 
pressure is reached.
If checked when hot, tire pressure can be as much as 
4–6 psi (30–40 kPa, 0.3–0.4 kgf/cm
2) higher than if 
checked when cold.
Whenever tire pressure is adjusted, you must 
calibrate the TPMS. 2 TPMS Calibration P. 398
Have an authorized Honda  Clarity Electric dealer 
check the tires if you feel a consistent vibration while 
driving. New tire s and any that have been removed 
and reinstalled  should be properly balanced.
3WARNING
Using tires that are excessively worn or 
improperly inflated can cause a crash in 
which you can be seriously hurt or killed.
Follow all instruction s in this owner’s 
manual regarding tire inflation and 
maintenance.
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