2021 HONDA CLARITY PLUG-IN warning

541Continued
Handling the Unexpected
Power System Won’t Start
Checking the Procedure
When the READY indicator does not come on and the Ready To Drive message
does not appear on the driver informatio n interface, check the following items and
take appropriate action.
ChecklistConditionWhat to Do
Check if the related
indicator or driver
information interface
messages come on.The Remove Charger Connector message appearsRemoving a charge connector. Set the power
mode to ACCESSORY, then to ON.
The Low Battery Charge . Power Reduced. message appearsCharge the High Voltage battery.
2Charging P. 460
The Temperature Is Too Cold For Vehicle To Operate
message appears.2 Driver Information Interface Warning and
Information Messages P. 105
The To Start, Hold Remote Near Start Button message
appears.
u Make sure the smart entry remote is in its operating range.
2 POWER Button Operating Range P. 160
2If the Smart Entry Remote Battery is Weak
P. 543
The POWER SYSTEM indicator comes on.Have your vehicle checked by a dealer.
The transmission system indicator blinks and Transmission
Problem Apply Parking Brake When Parked message
appears.The power system can be activated as a
temporary measure.
2 If the Transmission System Indicator Blinks
along with the Warning Message P. 558
Check the brightness
of the interior lights. The interior lights are dim or do not come on at
all. Have the 12-volt battery checked by a dealer.
The interior lights come on normally. Check a ll fuses, or have your vehicle checked by
a dealer.
2 Inspecting and Changing Fuses P. 566
1Checking the Procedure
If you must start the vehi cle immediately, use an
assisting vehicle or booster battery to jump start it.
2 If the 12-Volt Battery Is Dead P. 545
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545Continued
Handling the Unexpected
If the 12-Volt Battery Is Dead
Turn off the power to electric devices, such as the audio and lights. Turn off the
power system, then open the hood. 1.Open the battery terminal cover.
2. Connect the first jumper cable to your
vehicle’s 12-volt battery + terminal.
3. Connect the other end of the first jumper
cable to the booster battery + terminal.
u If you use a booster battery, only use a
12-volt booster battery.
u When using an automotive battery
charger, select a charging voltage lower
than 15-volts. Chec k the charger manual
for the proper setting.
4. Connect the second jumper cable to the
booster battery - terminal.
■Jump Starting Procedure1If the 12-Volt Battery Is Dead
Securely attach the jumper cable clips so that they do
not come off when the power system vibrates. Also
be careful not to tangle the jumper cables or allow
the cable ends to touch each other while attaching or
detaching the jumper cables.
12-volt Battery performa nce degrades in cold
conditions and may prevent the power system from
starting.
3WARNING
A 12-volt battery can explode if you do not
follow the correct procedure, seriously
injuring anyone nearby.
Keep all sparks, open flames, and smoking
materials away from the 12-volt battery.
Battery Terminal Cover
Booster Battery
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548
Handling the Unexpected
Overheating
How to Handle Overheating
Overheating symptoms are as follows:
•The High Temperature. Power Reduced. message appears on the driver
information interface.
• The Stop Driving When Safe. Engine Temperature Too Hot message appears
on the driver information interface.
• Steam or spray comes out of the engine compartment.
The High Temperature. Power Reduced. message appears on the driver
information interface when the po wer system temperature is high.
2Driver Information Interface Warning and Information Messages P. 105
1.Immediately park the vehicle in a safe place.
u Set the parking brake, and put the transmission into
(P, and set the parking
brake. Turn off all accessories and turn on the hazard warning lights.
2. Keep the power mode in ON, and wait until the message disappears.
u If the message does not disappear, have the vehicle inspected at a dealer.
■The High Temperature. Power Reduced. Message Appears
on the Driver Information Interface
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Continued549
uuOverheating uHow to Handle Overheating
Handling the Unexpected
■First thing to do
1. Immediately park the vehicle in a safe place.
2. Turn off all accessories and turn on the hazard warning lights.
u No steam or spray present: Keep the power system on and open the hood.
u Steam or spray is present: Turn off the power system and wait until it
subsides. Then open the hood.
■The Stop Driving When Safe. Engine Temperature Too Hot
Message Appears on the Driver Information Interface1 The Stop Driving When Safe. Engine Temperature Too
Hot Message Appears on the Driver Information Interface
NOTICE
Continuing to drive with the Stop Driving When
Safe. Engine Temperature Too Hot message on
the driver information interface may damage the
engine.
3WARNING
Steam and spray from an overheated
engine can seri ously scald you.
Do not open the hood if steam is coming
out.
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uuOverheating uHow to Handle Overheating
550
Handling the Unexpected
■Next thing to do
1.Check that the cooling fan is operating and
turn the power system off once the Stop
Driving When Safe. Engine
Temperature Too Hot message
disappears.
u If the cooling fan is not operating,
immediately turn the power system off.
2. Once the engine has cooled down, inspect
the coolant level an d check the cooling
system components for leaks.
u If the coolant level in the reserve tank is
low, add coolant until it reaches the
MAX mark.
u If there is no coolan t in the reserve tank,
check that the radiator is cool. Cover the
radiator cap with a heavy cloth and open
the cap. If necessary, add coolant up to
the base of the filler neck, and put the
cap back on.
■Last thing to do
Once the engine has cooled sufficiently, turn the power system on.
If the Stop Driving When Safe. Engine Temperature Too Hot message does not
appear, resume driving. If it appears again, contact a dealer for repairs.
1 The Stop Driving When Safe. Engine Temperature Too
Hot Message Appears on the Driver Information Interface
If the coolant is leaking, contact a dealer for repairs.
Use water as an emergency/temporary measure only.
Have a dealer flush the system with proper antifreeze
as soon as possible.
3WARNING
Removing the radiator cap while the
engine is hot can cause the coolant to spray
out, seriously scalding you.
Always let the engine and radiator cool
down before removing the radiator cap.
Reserve Tank
MAX
MIN
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551
Handling the Unexpected
Indicator, Coming On/Blinking
If the Low Oil Pressure Warning Appears
■Reasons for the Warning to appear
Appears when the engine oil pressure is low.
■What to do as soon as the warning
appears
1. Immediately park the vehicle on level
ground in a safe place.
2. If necessary, turn the hazard warning lights
on.
■What to do after parking the vehicle
1. Stop the engine and let it sit for
approximately three minutes.
2. Open the hood and ch eck the oil level.
2Oil Check P. 489
3.Start the engine and check the low oil
pressure warning.
u The warning disappears: Start driving
again.
u The warning does not disappear within
10 seconds: Immediately stop the engine
and contact a dealer for repairs.
1If the Low Oil Pressure Warning Appears
NOTICE
Running the engine with low oil pressure can cause
serious mechanical damage almost immediately.
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558
uuIndicator, Coming On/BlinkinguIf the Transmission System Indicator Blinks along with the Warning Message
Handling the Unexpected
If the Transmission System Indicator Blinks along
with the Warning Message
■Reasons for the indicator to blink
The transmission is malfunctioning.
■What to do when the indicator blinks
• Immediately have your vehicle inspected by
a dealer.
• Change the gear position to
(N when you
turn the power system on.
u Check if the
(N position in the
instrument panel and the indicator on
the
(N button light/blink.
u The power system cannot be turned on
unless the parking brake is set.
2 Turning on the Power P. 380
1If the Transmission System In dicator Blinks along with the
Warning Message
You may not be able to turn on the power system.
Make sure to set the parking brake when parking
your vehicle.
Call a professional towing service if you need to tow
your vehicle. 2 Emergency Towing P. 567
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568
Handling the Unexpected
If You Cannot Unlock the Fuel Fill Door
■What to Do If Unable to Unlock the Fuel Fill Door
If you cannot open the fuel fill door, use the following procedure. 1.Open the trunk and pull off the left inside
cover.
2. Pull the release lever towards you.
u The release lever opens the fuel fill door
when it is pulled.
3. Slowly remove the fuel fill cap by turning it
to the left. If you hear a release of pressure,
wait until it stops, then continue to slowly
remove the fuel fill cap.
2 How to Refuel P. 458
4.Add fuel very slowly.
u The automatic fuel tank vent valve does
not operate when the fuel fill door is
opened manually. Trying to add fuel too
rapidly when the vent valve is closed will
cause fuel vapors to be pushed out the
filler pipe and can cause a small amount
of liquid fuel to be spilled onto the
ground.
1 If You Cannot Unlock the Fuel Fill Door
The automatic fuel tank ve nt does not operate when
using the manual fuel door release. Gradually release
pressure by slowly turning th e fuel fill cap to the left.
If you hear a release of fuel vapors, wait until it stops,
then continue to slowly remove the fuel fill cap.
The malfunction indicator lamp may come on when
driving after you have refueled by manually opening
the fuel fill door.
2 If the Malfunction Indicator Lamp Comes
On or Blinks P. 553
After taking these steps, cont act a dealer to have the
vehicle checked.
3WARNING
Gasoline vapors in tank are under pressure.
• If using the manual fuel door release,
open the cap slowly to gradually release
pressure.
• Stop the engine, and keep all sparks,
heat, and flame away.
Release Lever
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