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447
Driving
Fuel Economy
Improving Fuel Economy
Achieving fuel economy is dependent on several factors, including driving
conditions, load weight, standby 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.
• 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
1Improving Fuel Economy
Direct calculation is the recommended method to
determine actual fuel consumed while driving.
Miles driven Kilogram
of fuel Miles per
Kilogram
Kilogram of fuel Kilometers per
Kilogram
Kilometers
driven
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448
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449
Maintenance
This chapter discusses basic maintenance.
Before Performing MaintenanceInspection and Maintenance ............ 450
Safety When Performing Maintenance...451
Parts and Fluids Used in Maintenance Service ........................................... 452
Maintenance Minder
TM..................... 453
Maintenance Under the Hood Maintenance Items Under the Hood .. 457
Opening the Hood ........................... 458
Inverter Coolant ............................... 459
Transmission Fluid ............................ 461
Brake Fluid ....................................... 461 Refilling Window Wa
sher Fluid......... 462
Replacing Light Bulbs ....................... 463
Checking and Maintaining Wiper
Blades .......................................... 465
Checking and Maintaining Tires
Checking Tires ................................. 468
Tire and Loading Information Label .. 469
Tire Labeling .................................... 469
DOT Tire Quality Grading (U.S. Vehicles).. 471
Wear Indicators................................ 473
Tire Service Life ................................ 473
Tire and Wheel Replacement............ 474 Tire Rotation .................................... 475
Winter Tires ..................................... 476
12-Volt Battery ................................. 477
Remote Transmitter Care Replacing the Button Battery ........... 479
Climate Control System Maintenance.. 480
CleaningInterior Care .................................... 481
Exterior Care.................................... 483
Accessories and Modifications ........ 487
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450
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 Fuel Cell dealer. (Note, however, that service at an
authorized Honda Clarity Fuel Cell dealer is not mandatory to keep your warranties
in effect.)
■Daily inspections
Perform inspections before long distance tri ps, when washing the vehicle, or when
refueling.
■Periodic inspections
• Check the brake fluid level monthly.
2 Brake Fluid P. 461
•Check the tire pressure monthly. Examin e the tread for wear and foreign objects.
2Checking and Maintaining Tires P. 468
•Check the operation of the exterior lights monthly.
2 Replacing Light Bulbs P. 463
•Check the condition of the wiper bl ades at least every six months.
2Checking and Maintaining Wiper Blades P. 465
■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. 455
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. 537
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.
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451
uuBefore Performing Maintenance uSafety When Performing Maintenance
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 motor or the surrounding parts can ignite them, causing a fire.
• To clean parts, use a co mmercially available degreas er or parts cleaner, not
gasoline.
• Wear eye protection and protective clothing when working with the 12-volt
battery or compressed air.
• The vehicle must be in a stationary condition.
u Make sure your vehicle is parked on le vel 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 cool thoroughly before touching vehicle
parts.
• Be aware that moving parts can injure you.
u Do not activate the power system unless instructed to do so.
Keep your hands and limbs away from moving parts.
■Maintenance Safety
■Vehicle Safety
1Safety When Performing Maintenance
3WARNING
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.
3WARNING
Failure to properly follow maintenance
instructions and precautions can cause you
to be seriously hurt or killed.
Always follow the procedures and
precautions in this owner’s manual.
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452
uuBefore Performing Maintenance uParts and Fluids Used in Maintenance Service
Maintenance
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.
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453Continued
Maintenance
Maintenance MinderTM
If the vehicle has maintenance items due 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 when to bring your
vehicle to an authorized Honda Clarity Fuel Cell dealer for indicated maintenance
services.
To Use Maintenance MinderTM
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 Information1Displaying the Maintena nce Minder Information
Based on the vehicle operati on hours, remaining ion
exchanger life is calculated.
There is a list of maintenance service items you can
view on the driver in formation interface.
2 Maintenance Service Items P. 455
/ Button
Maintenance Item Code(s)
Button
ENTER Button
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454
uuMaintenance MinderTMuTo Use Maintenance MinderTM
Maintenance
The system message indicator ( ) comes on al ong with the Maintenance Minder message.
*1 : The power system indicator comes on when an ion exchanger replacement is past due.
*2 : The messages appear alternately when an ion exchanger replacement is past due.
■Indicator, Warning Message and Maintenance Minder
Information on the Driver Information Interface
IndicatorWarning MessageMaintenance Minder
InformationExplanationInformation
—
Service Due SoonOne or more of the service
items are required in less than
30 days. Press the button
to switch to another display.The remaining days will
be counted down per
day.
—
Service Due NowOne or more of the service
items are required in less than
10 days. Press the button
to switch to another display.Have the indicated
service performed as
soon as possible.
Service Past DueThe indicated maintenance
service is still not done after the
remaining time reaches 0. Press
the button to switch to
another display.Your vehicle has passed
the service required
point.
Immediately have the
service performed and
make sure to reset the
Maintenance Minder
TM.*1
—*2
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