2019 HONDA CLARITY PLUG IN HYBRID engine

440 uu Braking u Anti-lock Brake System (ABS)
Driving Anti-lock Brake System (ABS) Helps prevent the wheels from locking up, an d helps you retain steering control by
pumping the brakes rapidly, much faster than you.
The electronic brake distributi on (EBD) system, which is part of the ABS, also
balances the front-to-rear braking distri bution according to vehicle loading.
You should never pump 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. Depress the brake pedal
and keep holding the pedal firmly down. On dry pavement, you will need to press
on the brake pedal very hard before the AB S activates. However, you may feel the
ABS activate immediately if you are trying to stop on snow or ice.
ABS may activate when you depress the brake pedal when driving on:
• Wet or snow covered roads.
• Roads paved with stone.
• Roads with uneven surfaces, such as potholes, cracks, manholes, etc.
When the vehicle speed goes unde r 6 mph (10 km/h), the ABS stops.■ ABS 1 Anti-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 wi ll not be operating. Have
your vehicle checked by an authorized Honda Clarity
Plug-In Hybrid 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 lo ckup 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 tire chains.
The following may be observed with the ABS system:
• Motor sounds coming from the engine
compartment when the brakes are applied, or
when system checks are being performed after the
power system has been turned on and while the
vehicle 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.19 CLARITY PHEV-31TRW6100.book 440 ページ ２０１８年１０月２５日　木曜日　午後２時２９分

454
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 additives in gasoline vary in the market, Honda
endorses the use of “TOP TIER Deterg ent Gasoline” where available to help
maintain the performance and reliability of your vehicle. TOP TIER Detergent
Gasoline meets a new gasoline standard join tly established by leading automotive
manufacturers to meet the need s of today’s advanced engines.
Qualifying gasoline retailers will, in most ca ses, identify their ga soline as having met
“TOP TIER Detergent Gasoline” standards at the retail location. This fuel is
guaranteed to contain the proper level of detergent additives and be free of metallic
additives. The proper level of detergent additives, and absenc e of harmful metallic
additives in gasoline, help avoid build-up of deposits in your engine and emission
control system.
For further important fuel-rel ated 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 gasoline. 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.19 CLARITY PHEV-31TRW6100.book 454 ページ ２０１８年１０月２５日　木曜日　午後２時２９分

455 uu Refueling u How to Refuel
Continued
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 info rmation 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 unti l 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 Cap19 CLARITY PHEV-31TRW6100.book 455 ページ ２０１８年１０月２５日　木曜日　午後２時２９分

469 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 th e battery life. To
maintain the battery while th e vehicle is not in use, re charge 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 time 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 ch arging 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 models19 CLARITY PHEV-31TRW6100.book 469 ページ ２０１８年１０月２５日　木曜日　午後２時２９分

472
Driving Fuel Economy and CO 2
EmissionsImproving Fuel Economy 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 accordance with the messages displayed on the
driver information interface.
• Use the recommended viscosity engine oil. 2 Recommended Engine Oil P. 484
• Maintain the specified tire pressure.
• Do not load the vehicl e 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 km19 CLARITY PHEV-31TRW6100.book 472 ページ ２０１８年１０月２５日　木曜日　午後２時２９分

473Maintenance This chapter discusses basic maintenance.
Before Performing Maintenance
Inspection and Maintenance ............ 474
Safety When Performing Maintenance...475
Parts and Fluids Used in Maintenance
Service ........................................... 476
Maintenance Minder TM
..................... 477
Maintenance Under the Hood
Maintenance Items Under the Hood .. 482
Opening the Hood ........................... 483
Recommended Engine Oil ................ 484
Oil Check ......................................... 485
Adding Engine Oil ............................ 486
Changing the Engine Oil and Oil Filter ...487 Engine Coolant ................................ 490
Cooling System ................................ 492
Transmission Fluid ............................ 494
Brake Fluid ....................................... 494
Refilling Window Washer Fluid......... 495
Replacing Light Bulbs ....................... 496
Checking and Maintaining Wiper
Blades .......................................... 498
Checking and Maintaining Tires
Checking Tires ................................. 501
Tire and Loading Information Label .. 502
Tire Labeling .................................... 502
DOT Tire Quality Grading (U.S. Vehicles).. 504 Wear Indicators ............................... 506
Tire Service Life ................................ 506
Tire and Wheel Replacement ........... 507
Tire Rotation .................................... 508
Winter Tires ..................................... 509
12-Volt Battery ................................. 510
Remote Transmitter Care
Replacing the Button Battery ........... 512
Climate Control System Maintenance .. 513
Cleaning
Interior Care .................................... 515
Exterior Care.................................... 517
Accessories and Modifications ........ 52119 CLARITY PHEV-31TRW6100.book 473 ページ ２０１８年１０月２５日　木曜日　午後２時２９分

475uu 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.19 CLARITY PHEV-31TRW6100.book 475 ページ ２０１８年１０月２５日　木曜日　午後２時２９分

uu Before Performing Maintenance u Parts and Fluids Used in Maintenance Service
476
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
1 Parts and Fluids Used in Maintenance Service NOTICE
Do not press the engine cover forcibly. This may
damage the engine cover and component parts.19 CLARITY PHEV-31TRW6100.book 476 ページ ２０１８年１０月２５日　木曜日　午後２時２９分