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17
Quick Reference Guide
HV Charge
To enable HV Charge, press the HV button until the HV Charge indicator turns on.
While the vehicle is in HV Charge, the High Voltage battery will continue to charge until the battery charge level display reac hes 12 
segments. Once the battery reaches this leve l, the vehicle switches to HV. You can cancel HV Charge before the battery reaches 12 segments 
by pressing the  HV button.
When the vehicle is in HV Charge, priority is given to the charging of the High Voltage battery. While the battery is being charged, the 
engine may run at a higher RPM than usual. The time it takes for the battery to be charged to 12 segments varies depending on d riving 
conditions.
The high voltage battery can be charged to 12 segments in after about 1 hour of high-speed driving. HV Charge is not recommende d for 
city driving or other driving situations  when you need to stop frequently or driv e slowly. In these situations, press the HV button again to 
disable HV Charge. If you are in HV and approaching a destination  where the vehicle can be charged, you can turn off HV and use the 
remaining battery power to drive.
Time
High Voltage battery when charged to 12 segments
HV 
Charge
Remaining power of the 
High Voltage battery
Press and hold 
the HV
 button.Press the  HV button.
EV EV
HV
u
Any time the  HV button is pressed 
while in HV or HV Charge, the 
system returns to EV operation.
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18
Quick Reference Guide
Energy Efficiency
As with a gasoline powered vehicle, the fuel efficiency and the range of this vehicle is most impacted by the driver’s driving style. Aggressive 
acceleration and high-speed driving can easily trigger the system  to switch the propulsion source to the gasoline-powered engin e. Climate 
control system usage also has a str ong impact with heavy usage negatively affecting the vehicle’s range.
Battery Type
There are two types of batteries used in this vehicle, a standa rd 12-volt battery that powers the airbags, the interior and exterior lights, and 
other standard 12-volt systems, and a high voltage battery that  is used to power the propulsion motor and recharge the 12-volt  battery.
Hybrid Vehicles
High voltage parts and high voltag e wires in this vehicle are sheathed in electromagnetic shielding material; therefore, the am ount of 
electromagnetic waves emitted is no more gr eater than those emitted by household appliances or the  electrical parts in conventional 
vehicles.
Sounds Unique to the Honda Plug-In System
When you first start driving this vehicle, you likely will hear  some unfamiliar sounds, particularly when you first turn on the power system, 
while driving, and just after parking. Some of these sounds are  unique to this vehicle‘s powertrain, fuel, and climate control systems; others 
are similar to sounds generated by conventional automobiles that typically are masked by louder noises absent from a vehicle of  this design. 
These sounds are not a cause for concern, and you will soon recognize them as normal and thus be able to detect any new or unus ual noise 
should one develop.
After shutting off the engi ne, you may hear certain noises coming from the vehicle. Here’s the lowdown:
● Noise from Under Vehicle:  This noise is caused by the vacuum pump inside the fuel evaporation leakage check module (ELCM). 
Depending on conditions, the pump will come on for about  15 minutes about 5 to 10 hours  after engine shutoff. This noise is just normal 
vehicle operation and don’t indicate a vehicle problem.
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19
Quick Reference Guide
Safety Precautions
Do not touch the High Voltage systemAttempting to take a system component apart or disconnect one of its wires can cause 
severe electrical shock. If the High Voltage system is in need of maintenance or repair, make 
sure that the maintenance or repair is carried out by an authorized Honda Clarity Plug-In 
Hybrid dealer.
If a crash occurs●Be careful of electric shock hazard.
uIf a severe crash damages your vehicle’s Hi gh Voltage system, there is a possibility of electrical shock due to exposed High Vo ltage 
components or wires. If this happens, do not touch any of  the High Voltage system components or any of its orange wires.
●Avoid contact with High Voltage battery fluid.
uThe High Voltage battery contains a flammabl e electrolyte that can leak as a result of a severe crash. Avoid any skin or eye contact 
with the electrolyte as it is  corrosive. If you accidentally come into contact  with the electrolyte, rinse the exposed skin or flush your 
eyes with copious amounts of water for at least fi ve minutes, then seek medical attention immediately.
●Use a fire extinguisher for an electrical fire.
uAttempting to extinguish an el ectrical fire with a small quantity of water can be dangerous.
●Anytime the vehicle is damaged in an accident, have it repaired by an authorized Honda Clarity Plug-In Hybrid dealer.
Emergency Shutdown System  for the High Voltage SystemIf the vehicle is involved in a crash, the emergency shutdown system will activate depending on the severity of the impact. Whe n the system 
activates, the High Voltage system automatica lly shuts down, and the vehicle can no longer move under its own power. To return the High 
Voltage system back to normal operation, consult an authorized Honda Clarity Plug-In Hybrid dealer.
Honda collects and recycles High Voltage batteries used in its vehicles. Consult an authorized Honda Clarity Plug-In Hybrid dea ler for more 
information.
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23
Quick Reference Guide
Instrument Panel (P 85)
Lights On Indicator
System Indicators
12-Volt Battery 
Charging System 
IndicatorAnti-lock Brake 
System (
ABS) 
Indicator
Vehicle Stability 
Assist
® (VSA ®) System 
Indicator
Vehicle Stability 
Assist ® (VSA ®) OFF 
Indicator Electric Power 
Steering (EPS) 
System Indicator
System Indicators
High Beam Indicator
Seat Belt Reminder 
Indicator
System Indicators
System Message 
Indicator
Parking Brake and 
Brake System 
Indicator (Red) Supplemental 
Restraint System 
Indicator
Gauges (P 121)/Driver Information Interface (P 124)/
System Indicators 
(P 86)
Low Tire Pressure/
TPMS Indicator Turn Signal and 
Hazard Warning 
Indicators
Speedometer
Automatic Brake Hold 
System Indicator Parking Brake and 
Brake System 
Indicator (Amber)SPORT
 Mode Indicator
Collision Mitigation 
Brake System
TM 
(CMBSTM) Indicator
Road Departure 
Mitigation (RDM) 
Indicator
Immobilizer System Indicator/
Security System Alarm Indicator
Automatic Brake Hold 
Indicator
READY Indicator
POWER SYSTEM  
Indicator
Gear Position 
Indicator
Fuel Gauge
Driver Information 
Interface
High Voltage Battery 
Charge Level Gauge
POWER/CHARGE  Gauge
Low Fuel Indicator
Adaptive Cruise Control 
(ACC) with Low Speed 
Follow (LSF) Indicator
Lane Keeping Assist 
System (LKAS) Indicator
Deceleration Paddle Selector Indicator
System Indicators
ECON Mode Indicator
EV
 Indicator
U.S.
Canada
HV  Indicator
HV Charge Indicator
Malfunction 
Indicator Lamp U.S.
Canada
U.S.
Canada
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35
Quick Reference Guide
Maintenance (P 473)
Under the Hood (P 482)
● Check engine oil, coolants and windshield washer fluid. Add 
when necessary.
● Check brake fluid.
● Check the 12-volt battery condition monthly.
aPull the hood release handle under the corner of the 
dashboard.
bLocate the hood latch lever,  push it to the side, and then 
raise the hood. Once you have raised the hood slightly, you 
can release the lever.
cWhen finished, close the hood  and make sure it is firmly 
locked in place.
Lights (P 496)
● Inspect all lights regularly.
Wiper Blades (P 498)
● Replace blades if they leave streaks 
across the windshield.
Tires (P 501)
● Inspect tires and  wheels regularly.
● Check tire pressures regularly.
● Install snow tires for winter driving.
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36
Quick Reference Guide
Handling the Unexpected (P 523)
Flat Tire (P 524)
● Park in a safe location and repair the flat 
tire using the temporary tire repair kit.
Indicators Come On 
(P 547)
●Identify the indicator and consult the 
owner’s manual.
Power System Won’t Start 
(P 537)
● If the 12-volt battery is dead, jump start 
using a booster battery.
Blown Fuse 
 
(P 555)
● Check for a blown fuse if an electrical 
device does not operate.
Overheating (P 544)
● Park in a safe location. If you do not see 
steam under the hood, open the hood, 
and let the power system cool down.
Emergency Towing 
(P 563)
●Call a professional towing service if you 
need to tow your vehicle.
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83
Safe Driving
Safety Labels
Label Locations
These labels are in the locations shown. They warn you of potential hazards that  can cause serious injury or death. Read these labels 
carefully.
If a label comes off or becomes hard to read (except for the U. S. dashboard label which may be removed by the owner), contact a n 
authorized Honda Clarity Plug-In  Hybrid dealer for a replacement.
Dashboard
Air Conditioner System U.S. models
Canadian models
Radiator Cap
U.S. models only
Charging Lid
U.S. models Canadian models
PCU U.S. models Canadian models
High Voltage Battery System 
Coolant Reserve Tank Cap
Sun Visor
U.S. models Canadian modelsMotor Coolant 
Reserve Tank Cap
Actuator Lid
U.S. models Canadian models
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90
uuIndicators u
Instrument Panel
IndicatorNameOn/BlinkingExplanationMessage
READY Indicator
●Comes on when the vehicle is 
ready to drive.●May go off if the  POWER SYSTEM  or 
transmission system indicator comes on.
2 Turning on the Power  P. 378
Malfunction 
Indicator Lamp
●Comes on when you set the power 
mode to ON, and goes off either 
when the power system is on or 
after several seconds if the vehicle 
did not start. If “readiness codes” 
have not been set, it blinks five 
times before it goes off.
●Comes on if there is a problem 
with the emissions control system.
●Blinks when a misfire in the 
engine's cylinders is detected.
●Readiness codes are part of the on board 
diagnostics for the emissions control 
systems.
2 Testing of Readiness Codes  P. 573●Comes on while driving - Have your 
vehicle checked by an  authorized Honda 
Clarity Plug-In Hybrid dealer.
●Blinks while driving  - Stop in a safe 
place where there are no flammable 
objects. Stop the power system for 10 
minutes or more, and wait for the engine 
to cool down. Then, t ake the vehicle to an 
authorized Honda Clarity Plug-In Hybrid 
dealer.
2 If the Malfunction Indicator Lamp 
Comes On or Blinks P. 549
12-Volt Battery 
Charging System 
Indicator
●Comes on when you set the power 
mode to ON, and  goes off when 
the power system is on.
●Comes on when the 12-volt 
battery is not charging.
●Comes on while driving  - Turn off the 
climate control system and rear defogger 
in order to reduce electricity 
consumption.
2 If the 12-Volt Battery Charging 
System Indicator Comes On  P. 548
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