2021 HONDA CLARITY FUEL CELL battery

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Quick Reference Guide
Maintenance (P 451)
Under the Hood (P 459)
●Check inverter coolant and windshield washer fluid. Add
when necessary.
●Check brake fluid.●Check the 12-volt battery condition monthly.
aPull the hood release handle under the corner of the
dashboard.
bLocate the hood latch lever, push it to the side, and then
raise the hood. Once you have raised the hood slightly, you
can release the lever.
cWhen finished, close the hood and make sure it is firmly
locked in place.
Lights (P 465)
●Inspect all lights regularly.
Wiper Blades (P 467)
●Replace blades if they leave streaks
across the windshield.
Tires (P 470)
●Inspect tires and wheels regularly.●Check tire pressures regularly.●Install snow tires for winter driving.
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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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uuIndicators u
Instrument Panel
IndicatorNameOn/BlinkingExplanationMessage
READY Indicator
●Comes on when the vehicle is
ready to drive.●May go off if the POWER SYSTEM or
transmission system indicator comes on.
2 Turning on the Power P. 372
12-Volt Battery
Charging System
Indicator
●Comes on when you set the power
mode to ON, and goes off when
the power system is on.
●Comes on when the 12-volt
battery is not charging.
●Comes on while driving - Turn off the
climate control system and rear defogger
in order to reduce electricity
consumption.
2 If the 12-Volt Battery Charging
System Indicator Comes On P. 515
Low Fuel
Indicator●Comes on when the vehicle is
running low on fuel (3 or 2 fuel-
gauge bars illuminated).●Refuel your vehicle as soon as possible.
Hydrogen Leak
Indicator
●Comes on for a few seconds when
you set the power mode to ON,
then goes off.
●Comes on if a small hydrogen gas
leak is detected.
●Your vehicle has less ability to accelerate
and may be harder to start on an incline.
●Have your vehicle checked by an
authorized Honda Clarity Fuel Cell dealer
immediately.
●Comes on if a hydrogen gas leak is
detected.●Generating electricity by the fuel cell is
stopped.
●Immediately stop in a safe place and have
your vehicle checked by an authorized
Honda Clarity Fuel Cell dealer.
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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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uuIndicators uDriver Information Interface Wa rning and Information Messages
Continued
Instrument Panel
MessageConditionExplanation
●Appears after the driver’s door is opened when the
power mode is in ACCESSORY.●Change the power mode to VEHICLE OFF.
2POWER Button P. 156
●Appears when the power mode is in ACCESSORY.
—
●Appears when you close th e door with the power
mode in ON without the sm art entry remote inside
the vehicle.●Disappears when you bring th e smart entry remote back
inside the vehicle and close the door.
2 Smart Entry Remote Reminder P. 158
●Appears when the smart entry remote battery
becomes weak.
2 Replacing the Button Battery P. 481
●Appears if the smart entry remote’s battery is too
weak to turn on the power system or the key is not
within operating range to turn on the power system.
A beeper sounds six times.●Bring the back of the smart entry remote into contact
with the POWER button.
2If the Smart Entry Remote Battery is Weak P. 506
●Appears when you set the power mode to
ACCESSORY or ON.
2Turning on the Power P. 372
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uuIndicators uDriver Information Interface Wa rning and Information Messages
Instrument Panel
MessageConditionExplanation
●Appears when the power system temperature is low.●Your vehicle has less ability to accelerate and may be
harder to start on an incline.
●In extremely cold climates, keep the vehicle stored in a
garage or preheat the power system before operating.
●Appears when the power system temperature is
high.●Your vehicle has less ability to accelerate and may be
harder to start on an incline.
●Appears if the power system is in diagnostic mode.●You may notice a decrease in available power. Have
your vehicle checked by an authorized Honda Clarity
Fuel Cell dealer immediately.
●As a result of diagnostics, the POWER SYSTEM
indicator may come on.
2 POWER SYSTEM Indicator P. 91
●Appears after the 12-volt battery charging system
indicator comes on.●Your vehicle has less ability to accelerate and may be
harder to start on an incline.
●Contact an authorized Honda Clarity Fuel Cell dealer
immediately.
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uuIndicators uDriver Information Interface Wa rning and Information Messages
Continued
Instrument Panel
MessageConditionExplanation
●Appears if there is a problem with the acoustic
vehicle alerting system.●Have your vehicle checked by an authorized Honda
Clarity Fuel Cell dealer immediately.
●Appears when the high vo ltage battery is running
extremely low.●Contact an authorized Hond a Clarity Fuel Cell dealer
immediately.
●Appears when the fuel lid is open and you attempt to
change the gear position to a gear other than
(P.
●Close the fuel lid.●If the indicator remains on even after confirming the
fuel lid is closed, the gear will not shift to a position
other than
(P. ●If the indicator remains on even after closing the fuel lid,
there may be a problem with the sensor, so have it
checked immediately by an authorized Honda Clarity
Fuel Cell dealer.
u If there is a problem with the sensor, press either
(D,
(N, or (R more than 6 times in a row while
depressing the brake pedal while the indicator is on
and you will be able to change the shift position.
●Appears when the power system shutdown process
is taking time.●The power system shutdown process is taking longer
than usual. This, however, is normal, and you may leave
the vehicle in this state.
●Appears when filling hydrogen gas is not completed
correctly.●Check if there is a problem at the hydrogen station.
If there is no problem, have your vehicle checked by an
authorized Honda Clarity Fuel Cell dealer immediately.
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uuIndicators uDriver Information Interface Wa rning and Information Messages
Instrument Panel
MessageConditionExplanation
●Appears when fuel cell and high voltage battery
temperature is low.●You cannot drive the vehicl e until the temperature of
the fuel cell and high voltage battery has increased.
Turn on the climate control system and wait until the
message disappears. u You can activate the climate control system with the
smart entry system.
2 Turning the Climate Control System On and Off
with the Remote P. 197
●It may take a longer time to st art in very cold conditions
or may not start at all until temperatures rise. If the
temperature of the fuel cell or the high voltage battery
drops below –4°F (–20°C), the fuel cells will not operate
and, as a result, the vehicl e will not start. Store the
vehicle in a garage or take another measure to insure
that temperature of the fuel cell and high voltage
battery do not fall below this temperature. If necessary,
consult an authorized Honda Clarity Fuel Cell dealer.
●Appears when the Fuel Cell Insulating Fluid level is
low.●Have your vehicle checked by an authorized Honda
Clarity Fuel Cell dealer immediately.
2Fuel Cell Insulating Fluid P. 19
●Appears if the power mode is set to ON while
refueling the hydrogen gas.●Press the POWER button to change the power mode to
VEHICLE OFF.
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