
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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uuGeneral Information on the Audio System uHonda App License Agreement
Continued
Features
E. Information Collection and Storage
1. Information Collection , Use, Transmission and Storage of Data. Consent to Use of Data:
 You agree that HONDA and PROVIDERS may 
collect and use your information gathered in  any manner as part of product support services related to the SOFTWARE or related services. 
HONDA may share such information with third  parties, including, without limitation, PR OVIDERS, third party software and services 
suppliers, their affiliates and/or their designated agents, solely to improve their products or to provide services or technolo gies to you. 
HONDA, third party software and syst ems suppliers, their affiliates and/or their de signated agent may disclose this information to others, 
but not in a form that pe rsonally identifies you.
2.  Information Storage.
 Depending on the type of multimedia system you have in  your VEHICLE, certain information may be stored for ease 
of use of the SOFTWARE including, without limitation, search hi story, location history in certain applications, previous and saved 
destinations, map locations within certain applicat ions, and device numbers and contact information.
(a) Vehicle Health Information.
 Your VEHICLE may remotely transmit information re garding the status and health of your VEHICLE 
(“VEHICLE INFORMATION”) to HONDA without  notification to you. VEHICLE INFORMATION may contain VEHICLE maintenance and 
malfunction status that is derived from VEHICLE diagnostic data  and includes, but is not limited to, status of powered doors and windows, 
battery life data, battery charging data, VE HICLE speed, coolant temperature, air comp ressor revolution, output power, warning codes, 
diagnostic trouble codes, fuel injection volume, and engine rota tions per minute. VEHICLE HEALTH INFORMATION may be used by HON DA 
for research and development, to  deliver HONDA SERVICES and informat ion to you, and to contact you, and is retained only for a period 
of time necessary to fulfill these goals.
(b) VEHICLE Geolocation Data (non-navigation/map based).
 If you opt-in to geolocation-based SERVICES, your vehicle’s geolocation data 
(latitude and longitude) will be  automatically sent from your VEHICLE to HONDA and PROVIDERS.
(c) You understand that the inputting or uploading of information  to your VEHICLE’s multimedia system or the SOFTWARE or SERVIC ES is 
at your own risk and that HONDA is not responsible for unauthori zed access to or use of any personal or other information. All information 
uploaded to the SOFTWARE and SERVICES may be  stored on your VEHICLES’s multimedia system and you understand that the security and 
safety of your VEHICLE’s multimedia  system is your sole responsibility.
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474
Maintenance
Before Performing Maintenance
Inspection and Maintenance
For your safety, perform all listed inspections and maintenance to keep your vehicle 
in good condition. If you become aware of  any abnormality (noise, smell, insufficient 
brake fluid, oil residue on the ground, etc .), have your vehicle inspected by an 
authorized Honda Clar ity Plug-In Hybrid dealer. (Note,  however, that service at an 
authorized Honda Clar ity Plug-In Hybrid dealer is not mandatory to keep your 
warranties in effect.)
■Daily inspections
Perform inspections before long distance  trips, when washing the vehicle, or when 
refueling.
■Periodic inspections
• Check the brake fluid level monthly.
2 Brake Fluid  P. 494
•Check the tire pressure monthly. Examin e the tread for wear and foreign objects.
2Checking and Maintaining Tires  P. 501
•Check the operation of the exterior lights monthly.
2 Replacing Light Bulbs  P. 496
•Check the condition of the wiper bl ades at least every six months.
2Checking and Maintaining Wiper Blades P. 498
■Types of Inspection and Maintenance
1Inspection and Maintenance
Maintenance, replacement, or repair of 
emissions control devices and systems may be 
done by any automotive repair establishment or 
individuals using parts that are “certified” to 
EPA standards.
According to state and fede ral regulations, failure to 
perform maintenance on the maintenance main 
items marked with # will  not void your emissions 
warranties. However, all ma intenance services should 
be performed in accordan ce with the intervals 
indicated by the driver  information interface.
2 Maintenance Service Items  P. 479
If you want to perform  complex maintenance tasks 
that require more skills a nd tools, you can purchase a 
subscription to the Service Express website at 
www.techinfo.honda.com .
2 Authorized Manuals  P. 577
If you want to perform ma intenance yourself, make 
sure that you have the necessary tools and skills first.
After performing ma intenance, update the records in 
the separate maintenance booklet.
U.S. models
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uuMaintenance Under the Hood uEngine Coolant
Maintenance
Engine Coolant
This coolant is premixed with 50% antifreeze and 50% water. Do not add any 
straight antifreeze or water.
We recommend you check the engine coolan t level every time you refuel or you 
charge the High Voltage battery. Check the re serve tank first. If it is completely 
empty, also check the coolant level in  the radiator. Add the engine coolant 
accordingly.
1. Make sure the engine and radiator are cool.
2. Check the amount of coolant in the reserve 
tank.
u If the coolant level is below the  MIN 
mark, add the specified coolant until it 
reaches the  MAX mark.
3. Inspect the cooling  system for leaks.
Specified coolant: Honda Long  Life Antifreeze/Coolant Type 2
■Reserve Tank
1Engine Coolant
NOTICE
Genuine Honda engine coolan t is a 50/50 mixture of 
antifreeze and water that can withstand freezing at 
temperatures as low as about −31°F (−35°C). If your 
vehicle is consistently subjected to temperatures 
below this, the concentration of antifreeze in the 
coolant should be  increased. Consult an authorized 
Honda Clarity Plug-In Hybrid dealer for details.
If Honda antifreeze /coolant is not available, you may 
use another major brand of  non-silicate coolant as a 
temporary replacement. Check that it is a high quality 
coolant recommended for  aluminum engines. 
Continued use of any non-Honda coolant can result 
in corrosion, causing the cooling system to 
malfunction or fail. Have the cooling system flushed 
and refilled with Honda anti freeze/coolant as soon as 
possible.
Do not add rust inhibitors or other additives to your 
vehicle’s cooling system. They may not be compatible 
with the coolant or with the engine components.
Reserve 
Tank
MAX
MIN
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501
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 unev enly, adversely affect handling and fuel 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 H onda Clarity Plug-In Hybrid dealer check 
the wheel alignment.
• Excessive tread wear.
2 Wear Indicators  P. 506
•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. 428
Have an authorized Honda Clarity Plug- In Hybrid 
dealer check the tires if you  feel a consistent vibration 
while driving. New tires and any that have been 
removed and reinstalled sh ould 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 instructions in this owner’s 
manual regarding tire inflation and 
maintenance.
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Information
Specifications
■Vehicle Specifications
■ Air Conditioning
■ Engine Specifications
ModelCLARITY PLUG-IN HYBRID
No. of Passengers:
Front 2
Rear 3
Total 5
Weights:Gross Vehicle Weight 
Rating See the certification label on the driver’s 
doorjamb
Gross Axle Weight 
Rating (Front)See the certification label on the driver’s 
doorjamb
Gross Axle Weight 
Rating (Rear)See the certification label on the driver’s 
doorjamb
Refrigerant TypeHFO-1234yf (R-1234yf)
Charge Quantity 13.9 – 15.7 oz (395 – 445 g)
Lubricant TypeSE-A2 (POE)
Quantity 8.54 – 10.4 cu-in (140 – 170 cc)
Displacement91.4 cu-in (1,498 cm3)
Spark Plugs NGK DILZKAR7C11H
■ Fuel
■ Washer Fluid
TypeUnleaded gasoline, Pump octane number 
of 87 or higher
Fuel Tank Capacity 7.0 US gal (26.5 L)
Tank Capacity1.43 US qt (1.35 L)
■ Light Bulbs
Headlights (Low Beam)LED
Headlights (High Beam) LED
Front Turn Signal LightsLED
Front Side Marker Lights LED
Parking/Daytime Running LightsLED
Taillights/Rear Side Marker Lights LED
Brake LightsLED
Taillights LED
Back-Up LightsLED
Rear Turn Signal Lights LED
High-Mount Brake LightLED
Rear License Plate Light LED
Interior LightsFront and Rear Map LightsLEDFront and Rear Ambient LightsLEDVanity Mirror Lights1.4 WCenter Console LightLEDGlove Box LightLEDFront Foot Lights*LEDTrunk LightLEDIllumination Lamp 
(inside Charge Lid)LED
* Not available on all models
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Index
I
Identification NumbersEngine, Motor, and Transmission ............. 570
Vehicle Identification ............................... 570
Immobilizer System .................................. 153
Indicator ....................................................  97
Indicators .....................................................  86
12-Volt Battery Charging System .......  90, 548
Adaptive Cruise Control (ACC) with  Low Speed Follow (LSF) ..................  100, 403
Anti-lock Brake System (ABS) .....................  93
Automatic Brake Hold........................  87, 438
Automatic Brake Hold System ............  87, 438
Collision Mitigati on Braking System
TM 
(CMBSTM) .......................................  101, 102
Deceleration Paddle  Selector ......................  91
ECON Mode ..............................................  98
Electric Power Steering (EPS) System ..  94, 551
EV .............................................................  89
Gear Position .............................................  91
High Beam.................................................  97
HV .............................................................  89
HV Charge.................................................  89
Immobilizer System ....................................  97
Lane Keeping Assist System (LKAS) ..  101, 420
Lights On ...................................................  97
Low Fuel ....................................................  91
Low Tire Pressure/TPMS .............  96, 428, 430
Malfunction Indicator Lamp .......................  90
Parking Brake and Brake System  (Amber) ...........................................  88, 552 Parking Brake and Brake 
System (Red)......................  86, 87, 550, 552
POWER SYSTEM ........................................  88
READY ......................................................  90
Road Departure Mitigation (RDM) .............  99
Seat Belt Reminder ..............................  49, 93
Security System Alarm ...............................  98
SPORT Mode .....................................  98, 391
Supplemental Restraint System ............  66, 94
System Message ........................................  98
Transmission System..................................  92
Turn Signal and Hazard Warning ...............  97
Vehicle Stability Assist ® (VSA ®) OFF ....  95, 426
Vehicle Stability Assist ® (VSA ®) 
System ............................................  95, 425
Information ..............................................  567
Instant Fuel Economy ...............................  127
Instrument Panel ........................................  85
Interior Lights ...........................................  183
Interior Rearview Mirror ..........................  173
iPod ...........................................................  255
J
Jacking Points ...........................................  536
Jump Starting ...........................................  541
K
Key Number Tag .......................................  138
Keyless Lockout Prevention .....................  145Keys
...........................................................  137
Lockout Prevention .................................  145
Number Tag............................................  138
Rear Door Won’t Open ...........................  148
Remote Transmitter ................................  143
Types and Functions................................  137
Kickdown ..................................................  383
L
Lane Keeping Assist System (LKAS) ........  418
LaneWatchTM............................................  432
LATCH (Child Seats) ...................................  74
Lights ................................................  162, 496
Automatic...............................................  163
Bulb Replacement ...................................  496
Daytime Running Lights ..........................  165
High Beam Indicator .................................  97
Interior....................................................  183
Light Switches.........................................  162
Lights On Indicator....................................  97
Turn Signals ............................................  161
Load Limits ...............................................  375
Locking/Unlocking ...................................  137
Auto Door Locking/Unlocking .................  149
Childproof Door Locks ............................  148
From Inside .............................................  146
From Outside ..........................................  139
Keys........................................................  137
Using a Key.............................................  144
Lockout Prevention System .....................  145
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