2021 HONDA CLARITY FUEL CELL service

These data can help provide a better understanding of the
circumstances in which crashes and injuries occur. NOTE: EDR data
are recorded by your vehicle only if a non-trivial crash situation
occurs; no data are recorded by the EDR under normal driving
conditions and no personal data (e.g., name, gender, age, and
crash location) are recorded. Howe ver, other parties, such as law
enforcement, could combine the EDR data with the type of
personally identifying data routinely acquired during a crash
investigation.
To read data recorded by an ED R, special equipment is required,
and access to the vehicle or the ED R is needed. In addition to the
vehicle manufacturer, other parties, such as law enforcement, that
have the special equipment, can r ead the information if they have
access to the vehicle or the EDR.
The data belongs to the vehicle owner and may not be accessed by
anyone else except as legally required or with the permission of the
vehicle owner.Service Diagnostic Recorders
This vehicle is equipped with serv ice-related devices that record
information about powertrain performance. The data can be used
to verify emissions law requirements and/or help technicians
diagnose and solve service problems. It may also be combined with
data from other sources for research purposes, but it remains
confidential. Some diagnostic and maintenance information is
uploaded to Honda upon vehicle start up.
California Perchlorate Contamination Prevention Act
The airbags, seat belt tensioners , and CR type batteries in this
vehicle may contain perchlorate materials - special handling may
apply. See www.dtsc.ca.gov/hazardo uswaste/perchlorate/
As you read this manual, you will find information that is preceded
by a symbol. This information is intended to help you avoid
damage to your vehicle, other property, or the environment.
NOTICE
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Software End User License Agreement
Your vehicle comes equipped with software, which is governed by
the End User License Agreement in Owner’s Manual, and which
contains a binding arbitration clau se. Please refer to the End User
License Agreement for the terms and conditions governing your
use of the installed software, as well as the applications, services,
functions, and content provided through the software. Your use of
the installed software will serve as your consent to the terms and
conditions of the End Us er License Agreement.
You may opt out within 30 days of your initial use of the Software
by sending a signed, written notice to HONDA at American Honda
Motor Co., Inc. Honda Automobile Customer Services Mail Stop
100-5E-8A, 1919 Torrance Blvd. Torrance, CA 90501-2746.
Privacy Notice
This vehicle may share location an d usage information. To manage
this setting, visit www.hondalink.com/vehicle-data-choices .
To learn more about how we collect and use Personal
Information, please read our Privacy Policy, accessible
at www.honda.com .
Fuel Cell Monitoring System
This vehicle is equipped with a monitoring system that compiles
data about your vehicle and drivin g conditions and transmits that
data to Honda at regular intervals as determined at the discretion
of Honda. This data includes information on but not limited to the
following:
●Vehicle location, distance driven, warning indicators and
messages, and vehicle speed
●Fuel cell system control and power generation
The system does not record audio or images.
Data collected is used for the sole purposes of technical diagnoses,
preventive maintenance, resear ch and vehicle development.
Neither Honda nor any third party receiving data will use the data
for any other purpose withou t first obtaining customer
authorization.
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Contents
Child Safety P. 72Safety Labels P. 85
Opening and Closing the Trunk P. 148 Security System P. 151 Opening and Closing the Windows P. 154
Adjusting the Mirrors P. 172 Adjusting the Seats P. 174
Climate Control System P. 190
Audio Error Messages P. 279 General Information on the Audio System P. 283
Bluetooth ® HandsFreeLink ® P. 331
When Driving P. 372 Braking P. 427Parking Your Vehicle P. 443
Fuel Economy P. 450
Maintenance Under the Hood P. 459 Replacing Light Bulbs P. 465
Checking and Maintaining Tires P. 470 12-Volt Battery P. 479 Remote Transmitter Care P. 481
Accessories and Modifications P. 489
Power System Won’t Start P. 505 If the 12-Volt Battery Is Dead P. 508 Overheating P. 511
Fuses P. 520 Emergency Towing P. 528
If You Cannot Open the Trunk P. 530
Devices that Emit Radio Waves P. 535 Reporting Safety Defects P. 536
Customer Service Information P. 541
Quick Reference GuideP. 6
Safe DrivingP. 43
Instrument PanelP. 87
ControlsP. 133
FeaturesP. 199
DrivingP. 365
MaintenanceP. 451
Handling the UnexpectedP. 491
InformationP. 531
IndexP. 543
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15
Quick Reference Guide
High Voltage Components, High Voltage Cables and High Temperature
Components
Fuel cell vehicles have high voltage components (about 500 V maximum) such as the FC stack, FCVCU, High Voltage battery, power control
unit, high voltage cables (identified by their orange covers), el ectric motor, and high temperature parts such as the radiator. Labels with
handling warnings are attached to these components.
WARNING
This vehicle has high voltage circuits and
parts. Failure to observe the following
precautions can result in burns or electric
shock.
●Do not remove, disassemble, or replace
the high voltage parts, cables (orange) or
their connectors.
●Never touch the High Voltage battery
service plugs.
In an emergency or during maintenance or
repair, the service plugs are removed to cut
off the electric flow from the battery. These
plugs are in contact with the battery and
can cause severe electric shock if not
handled properly.
Only a qualified technician should handle
any electrical equipment. For inspection
and repair, consult an authorized Honda
Clarity Fuel Cell dealer.
12V DC/DC Converter
●A/C Compressor●A/C Heater
Radiator a Air Pump FC Stack b Air Pump Power Control Unit High Voltage Battery
●Electric Motor●Power Control Unit
Labela Radiator Cap b FCVCU and FC Stack
FCVCU b
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20
Quick Reference Guide
Ion Exchanger
An ion exchanger is installed in the fluid lines for the fuel cell in order to maintain the
insulation properties of the fuel cell insulating fluid (FC insulating fluid).
If the message Service Due Soon A appears on the driver information interface, ion
exchange filter replacement is necessary. Be sure to consult an authorized Honda Clarity
Fuel Cell dealer. 2 Indicators (P91)
Exhaust Pipe
Water is expelled from the tail pipe while the vehicle is running or while the High Voltage
battery is being charged. This also happens af ter the vehicle has been running or when you
shut down the FC system by setting the power mode to OFF. If you stand to the left rear of
the vehicle, you may be sprayed by this waste water.
Never drink water expelled from the pipe. Though this water is harmless, it is not suitable
for drinking.
While the vehicle is parked during cold temperatures, the FC system may automatically turn
on and discharge water from the ex haust pipe. If this water is discharged as a vapor, it may
appear as a white mist. This, however, is not indicative of a problem.
Do not obstruct or block the exhaust pi pe as the FC system may stop working.
Maintenance, Repair, and Disposal
Always consult an authorized Honda Clarity Fuel Cell dealer regarding maintenance, repair,
and disposal.
Fuel cells and High Voltage batteries that have been removed from disposed vehicles are
collected through authorized Honda Clarity Fuel Cell dealers. Do not dispose of those
batteries yourself.
WARNING
Do not directly touch any water emissions
from the exhaust pipe.
Water created during FC power generation
is discharged from the exhaust pipe in the
form of either liquid (water) or gas (steam).
Directly touching this water may cause
burns.
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38
Quick Reference Guide
Handling the Unexpected (P 491)
Flat Tire (P 492)
●Park in a safe location and repair the flat
tire using the temporary tire repair kit.
Indicators Come On
(P 515)
●Identify the indicator and consult the
owner’s manual.
Power System Won’t Start
(P 505)
●If the 12-volt battery is dead, jump start
using a booster battery.
Blown Fuse

(P 520)
●Check for a blown fuse if an electrical
device does not operate.
Overheating (P 511)
●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 528)
●Call a professional towing service if you
need to tow your vehicle.
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71
uuAirbags uAirbag Care
Safe Driving
Airbag Care
You do not need to, and should not, perform any maintenance on or replace any
airbag system components yourself. However, you should have your vehicle
inspected by an authorized Honda Clarity Fuel Cell dealer in the following situations:
■When the airbags have deployed
If an airbag has inflated, th e control unit and other related parts must be replaced.
Similarly, once an automatic seat belt te nsioner has been activated, it must be
replaced.
■When the vehicle has been in a moderate-to-severe collision
Even if the airbags did not inflate, have your authorized Honda Clarity Fuel Cell
dealer inspect the following: th e driver’s seat position sensor, weight sensors in the
passenger’s seat, front seat belt tensioners , and each seat belt that was worn during
the crash.
■Do not remove or modify a front seat without consulting an authorized
Honda Clarity Fu el Cell dealer
This would likely disable or affect the proper operation of the driver’s seat position
sensor or the weight sensors in the passenge r’s seat. If it is necessary to remove or
modify a front seat to accommodate a person with disabilities, contact an
authorized Honda Clarity Fuel Cell deal er, or call American Honda Automobile
Customer Service at 1-800-999-1009.
1 Airbag Care
We recommend against the use of salvaged airbag
system components, includi ng the airbag, tensioners,
sensors, and control unit.
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104
uuIndicators uDriver Information Interface Wa rning and Information Messages
Instrument Panel
Driver Information Interface Warning and Information Messages
The following messages appear only on the driver information interface. Press th e (display/information) button to see the mess age
again with the system message indicator on.
MessageConditionExplanation
●Appears when the vehicle is no longer able to run
due to a malfunction.●Immediately stop in a safe place.
●Appears when the schedul ed maintenance is due
soon.
●Consequently, Service Due Now and Service Past
Due follow.
2Indicator, Warning Message and Maintenance
Minder Information on the Driver Information
Interface P. 456
●Appears as soon as a problem is detected in the
smart entry system or push button starting system.●Appears constantly - Have your vehicle checked by an
authorized Hond a Clarity Fuel Cell dealer.
●Appears when there is a pr oblem with the sensor on
the 12-volt battery.●Have your vehicle checked by an authorized Honda
Clarity Fuel Cell dealer.
2 Checking the 12-Volt Battery P. 479
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