2018 HONDA CLARITY PLUG IN HYBRID engine

451
Driving
Refueling Fuel Information ■ Fuel recommendation
Use of a lower octane gasoline can cause a persistent, heavy metallic knocking noise
that can lead to engine damage.
■ Top tier detergent gasoline
Because the level of detergency and additive s in gasoline vary in the market, Honda
endorses the use of “TOP TIER Detergent Gasoline” where available to help
maintain the performance and reliability of your vehicle. TOP TIER Detergent
Gasoline meets a new gasoline standard jo intly established by leading automotive
manufacturers to meet the needs of today’s advanced engines.
Qualifying gasoline retailers will, in most cases, identify their gasoline as having met
“TOP TIER Detergent Gasoline” standards at the retail location. This fuel is
guaranteed to contain the proper level of de tergent additives and be free of metallic
additives. The proper level of detergent ad ditives, and absence of harmful metallic
additives in gasoline, help avoid build-up of deposits in your engine and emission
control system.
For further important fuel-related information for your vehicle, or on information on
gasoline that does not contain MMT, visit www.hondacars.com. In Canada, visit
www.honda.ca for additional information on gaso line. For more information on top
tier gasoline, visit www.toptiergas.com .
■ Fuel tank capacity: 7.0 US gal (26.5 liters)Unleaded gasoline, pump octane number 87 or higher 1 Fuel Information NOTICE
We recommend quality ga soline containing
detergent additives that help prevent fuel system and
engine deposits. In addition, in order to maintain
good performance, fuel economy, and emissions
control, we strongly reco mmend the use of gasoline
that does NOT contain harmful manganese-based
fuel additives such as MMT, if such gasoline is
available.
Use of gasoline with these additives may adversely
affect performance, a nd cause the malfunction
indicator lamp on your inst rument panel to come on.
If this happens, contact an authorized Honda Clarity
Plug-In Hybrid dealer for service.
Some gasoline today is ble nded with oxygenates such
as ethanol. Your vehicle is designed to operate on
oxygenated gasoline containing up to 15% ethanol
by volume. Do not use gaso line containing methanol.
If you notice any undesira ble operating symptoms, try
another service station or sw itch to another brand of
gasoline.18 CLARITY PHEV CSS-31TRW6000.book 451 ページ ２０１７年８月３１日　木曜日　午後２時４９分

452 uu Refueling u How to Refuel
Driving How to Refuel 1. Stop your vehicle with the service station
pump on the left side of the vehicle in the
rear.
2. Put the transmission into ( P
.
3. Turn the power system off.
4. Press the fuel fill door release button.
u Please Wait appears for a few seconds
on the driver information interface.
5. When the message changes to Ready , the
fuel fill door automatically opens.
u You can now unscrew the fuel cap and
start refueling.
6. Remove the fuel fill cap slowly. If you hear a
release of air, wait unt il this stops, then turn
the knob slowly to open the fuel fill cap. 1 How to Refuel
This vehicle has a pressurized fuel system.
When the fuel vapor pressure inside the fuel tank is
high, it takes about 10 seconds for the vehicle to vent
the fuel tank. Once the pressure is vented, the driver
information interface changes from Please Wait to
Ready .
If the filler nozzle keeps tu rning off when the tank is
not full, there may be a problem with the pump's fuel
vapor recovery system. Try fi lling at another pump. If
this does not fix the problem, consult an authorized
Honda Clarity Plug-In Hybrid dealer.
Do not continue to add fuel after the filler nozzle has
automatically stopped. Addi tional fuel can exceed
the full tank capacity.
The filler nozzle automatically stops to leave space in
the fuel tank so that fuel does not overflow as a result
of changes in air temperature.3
WARNING Gasoline is highly flammable and explosive.
You can be burned or seriously injured
when handling fuel.
• Stop the engine, and keep heat, sparks,
and flame away.
• Handle fuel only outdoors.
• Wipe up spills immediately.Fuel Fill Door
Release Button
Fuel Fill Cap18 CLARITY PHEV CSS-31TRW6000.book 452 ページ ２０１７年８月３１日　木曜日　午後２時４９分

466 uu Charging u High Voltage Battery
Driving High Voltage Battery The High Voltage battery gradually discharges even if the vehicle is not in use. As a
result, if your vehicle is parked for an ex tended period of time, the battery level may
get low. Keeping your vehicle’s battery le vel low can shorten the battery life. To
maintain the battery while the vehicle is not in use, recharge the battery at least
once every three months.
The High Voltage battery life can also be affected by ambient temperature. In
particular, when it is cold outside, the ve hicle’s driving range on electric power can
be reduced, and a longer battery charging ti me is required. In addition, parking in
extremely hot or cold environments can accelerate battery drain.
To help extend the lifespan of the battery, it is recommended that you fully charge
the battery each time prior to driving.
Store the vehicle in a garage to insure that the temperature of the High Voltage
battery does not drop too low.
■ Battery Warming System
Designed to prevent the temperature of the battery from dropping when outside
temperatures drop, thereby maintainin g starting and running efficiency.
If the vehicle is plugged in when outside temperatures are low, the battery warming
system will use the power from the charging equipment to maintain the
temperature of the battery until the next time the vehicle is driven. 1 High Voltage Battery
The High Voltage battery dr ains over time, and under
some conditions, drains fast er. When the battery life
is shortened, this cha nges the vehicle’s driving
distance.
Be careful not to let the High Voltage battery drain
too much. If the battery level becomes close to zero,
it will make it impossible to start the engine.
U.S. models
1 Battery Warming System
If the vehicle is left unplug ged in cold temperatures,
the temperature of the ba ttery will drop, possibly
resulting in a loss of running efficiency.
If left for an extended period of time in extremely
cold temperatures, the vehicle may not start. We
recommend that you plug in your vehicle when you
are parking or storing your vehicle in cold
temperatures.Canadian models18 CLARITY PHEV CSS-31TRW6000.book 466 ページ ２０１７年８月３１日　木曜日　午後２時４９分

469
Driving
Fuel Economy and CO 2
EmissionsImproving Fuel Ec onomy and Reducing CO 2

Emissions Achieving fuel economy and reducing CO 2
emissions is dependent on several
factors, including driving conditions, load weight, idling time, driving habits, and
vehicle condition. Depending on these and other factors, you may not achieve the
rated fuel economy of this vehicle.
You can optimize your fuel economy with proper maintenance of your vehicle.
Always maintain your vehicle in accord ance with the messages displayed on the
driver information interface.
• Use the recommended viscosit y engine oil, displaying the API Certification Seal.
• Maintain the specified tire pressure.
• Do not load the vehicle with excess cargo.
• Keep your vehicle clean. A buildup of snow or mud on your vehicle's underside
adds weight and increases wind resistance.■ Maintenance and Fuel Economy 1 Improving Fuel Economy and Reducing CO 2
Emissions
Direct calculation is the recommended method to
determine actual fuel consumed while driving.
In Canada, posted fuel economy numbers are
established following a simulated test. For more
information on how this test is performed, please visit
http://oee.nrcan.gc.ca/ Miles driven Gallons of
fuel Miles per
Gallon
100 Liters of
fuel Kilometers
driven L per 100 km18 CLARITY PHEV CSS-31TRW6000.book 469 ページ ２０１７年８月３１日　木曜日　午後２時４９分

471Maintenance This chapter discusses basic maintenance.
Before Performing Maintenance
Inspection and Maintenance ............ 472
Safety When Performing Maintenance...473
Parts and Fluids Used in Maintenance
Service ........................................... 474
Maintenance Minder TM
..................... 475
Maintenance Under the Hood
Maintenance Items Under the Hood .. 480
Opening the Hood ........................... 481
Recommended Engine Oil ................ 482
Oil Check ......................................... 483
Adding Engine Oil ............................ 484
Changing the Engine Oil and Oil Filter ...485 Engine Coolant ................................ 488
Cooling System ................................ 490
Transmission Fluid ............................ 492
Brake Fluid ....................................... 492
Refilling Window Washer Fluid......... 493
Replacing Light Bulbs ....................... 494
Checking and Maintaining Wiper
Blades .......................................... 496
Checking and Maintaining Tires
Checking Tires ................................. 499
Tire and Loading Information Label .. 500
Tire Labeling .................................... 500
DOT Tire Quality Grading (U.S. Vehicles).. 502 Wear Indicators ............................... 504
Tire Service Life ................................ 504
Tire and Wheel Replacement ........... 505
Tire Rotation .................................... 506
Winter Tires ..................................... 507
12-Volt Battery ................................. 508
Remote Transmitter Care
Replacing the Button Battery ........... 510
Climate Control System Maintenance .. 511
Cleaning
Interior Care .................................... 513
Exterior Care.................................... 515
Accessories and Modifications ........ 51918 CLARITY PHEV CSS-31TRW6000.book 471 ページ ２０１７年８月３１日　木曜日　午後２時４９分

473uu Before Performing Maintenance u Safety When Performing Maintenance
Continued
Maintenance
Safety When Performing Maintenance Some of the most important safe ty precautions are given here.
However, we cannot warn you of every conceivable hazard that can arise in
performing maintenance. Only you can decide whether you should perform a given
task.
• To reduce the possibility of fire or explos ion, keep cigarettes, sparks, and flames
away from the 12-volt battery, all High Volt age system, and all fuel related parts.
• Never leave rags, towels, or other flammable objects under the hood.
u Heat from the engine and exhaust can ignite them, causing a fire.
• To clean parts, use a co mmercially available degreaser or parts cleaner, not
gasoline.
• Wear eye protection and pr otective clothing when working with the 12-volt
battery or compressed air.
• Engine exhaust contains carbon monoxide, which is poisonous and can kill you.
u Only operate the engine if th ere is sufficient ventilation.■ Maintenance Safety 1 Safety When Performing Maintenance
3
WARNING Improperly maintaining this vehicle or
failing to correct a pr oblem before driving
can cause a crash in which you can be
seriously hurt or killed.
Always follow the inspection and
maintenance recommendations according
to the schedules in this owner’s manual.
3
WARNING Failure to properly follow maintenance
instructions and prec autions can cause you
to be seriously hurt or killed.
Always follow the procedures and
precautions in this owner’s manual.18 CLARITY PHEV CSS-31TRW6000.book 473 ページ ２０１７年８月３１日　木曜日　午後２時４９分

474 uu Before Performing Maintenance u Parts and Fluids Used in Maintenance Service
Maintenance • The vehicle must be in a stationary condition.
u Make sure your vehicle is parked on leve l ground, the parking brake is set, and
the power system is turned off.
• Be aware that hot parts can burn you.
u Make sure to let the power system incl uding the engine and exhaust system
cool thoroughly before touching vehicle parts.
• Be aware that moving parts can injure you.
u Do not activate the power system unle ss instructed, and keep your hands and
limbs away from moving parts. When th e power mode is on, the engine can
automatically start, or the radiator fan may start operating without the engine
running.
Parts and Fluids Used in Maintenance Service The use of Honda genuine parts and fluids is recommended when maintaining and
servicing your vehicle. Honda genuine parts are manufactured according to the
same high quality standards used in Honda vehicles.■ Vehicle Safety 18 CLARITY PHEV CSS-31TRW6000.book 474 ページ ２０１７年８月３１日　木曜日　午後２時４９分

475Continued
Maintenance
Maintenance Minder TM
If the vehicle has maintenance items du e within 30 days, you will see the
Maintenance Minder messages appear on the driver information interface every
time you set the power mode to ON. The messages notify you wh en to bring your
vehicle to an authorized Honda Clarit y Plug-In Hybrid dealer for indicated
maintenance services.
To Use Maintenance Minder TM
1. Set the power mode to ON.
2. Press the (display/ information) button.
3. Press the / button to select the icon, and press the ENTER button.
■ Displaying the Maintenance Minder Information 1 Displaying the Maintena nce Minder Information
Based on the engine operati ng conditions and engine
oil conditions, the system calculates the remaining
days before the next serv ice is to be performed.
There is a list of maintena nce main and sub items you
can view on the driver information interface.
2 Maintenance Service Items P. 477 / Button
Maintenance Item Code(s)
ButtonENTER Button18 CLARITY PHEV CSS-31TRW6000.book 475 ページ ２０１７年８月３１日　木曜日　午後２時４９分