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463
uuChecking and Maintaining Tires uDOT Tire Quality Grading (U.S. Vehicles)
Maintenance
The traction grades, from  highest to lowest, are AA, A, B, and C. 
Those grades represent the tire’s  ability to stop on wet pavement 
as measured under controlled conditions on specified 
government test surfaces of asph alt and concrete. A tire marked 
C may have poor traction performance.
The temperature grades are A (the highest), B, and C, 
representing the tire’s resistance  to the generation of heat and its 
ability to dissipate heat when te sted under controlled conditions 
on a specified indoor laboratory  test wheel. Sustained high 
temperature can cause the material  of the tire to degenerate and 
reduce tire life, and ex cessive temperature can  lead to sudden tire 
failure. The grade C corresponds to a level of performance which 
all passenger car tires must meet under the Federal Motor Vehicle 
Safety Standard No. 109. Grades  B and A represent higher levels 
of performance on the laboratory  test wheel than the minimum 
required by law.
■Traction
■Temperature
1 Traction
Warning: The traction grade 
assigned to this tire is based on 
straight-ahead braking traction tests, 
and does not include acceleration, 
cornering, hydroplaning, or peak 
traction characteristics.
1Temperature
Warning: The temperature grade for 
this tire is establishe d for a tire that is 
properly inflated and not 
overloaded. Excessive speed, 
underinflation, or excessive loading, 
either separately or in combination, 
can cause heat buildup and possible 
tire failure.
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464
uuChecking and Maintaining Tires uWear Indicators
Maintenance
Wear Indicators
The groove where the wear indicator is 
located is 1/16 inch (1.6 mm) shallower than 
elsewhere on the tire. If the tread has worn so 
that the indicator is ex posed, replace the tire. 
Worn out tires have poor traction on wet 
roads.
Tire Service Life
The life of your tires is dependent on many factors, including driving habits, road 
conditions, vehicle loading, inflation pre ssure, maintenance history, speed, and 
environmental conditions (even when the tires are not in use).
In addition to regular in spections and inflation pres sure maintenance, it is 
recommended that you have annual inspecti ons performed once the tires reach five 
years old. All tires should be removed fro m service after 10 years from the date of 
manufacture, regardless of their condition or state of wear.
Example of a Wear 
Indicator mark
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481
Handling the Unexpected
This chapter explains how to handle unexpected troubles.
If a Tire Goes FlatTemporarily Repairi ng a Flat Tire....... 482
Handling of the Jack ......................... 494
Power System Won’t Start Checking the Procedure ................... 495
If the Smart Entry Remote Battery is Weak .......................................... 496
Emergency Power System Off........... 497
Jump Starting .................................... 498
Overheating How to Handle Overheating ............. 501 Indicator, Coming On/Blinking
If the 12-Volt Battery Charging System Indicator Comes On ....................... 502
If the Brake System Indicator (Red) Comes  On or Blinks ....................................... 503
If the Electric Power Steering (EPS) System 
Indicator Comes On ........................... 504If the Brake System Indicator (Red) Comes On or Blinks at the Same Time 
When the Brake System Indicator 
(Amber) Comes On ...................... 505
If the Low Tire Pressure/TPMS Indicator 
Comes On or Blinks........................ 506 If the Transmission System Indicator Blinks 
along with the Warning Message .... 507
Fuses
Fuse Locations ................................. 508
Inspecting and Changing Fuses ........ 514
Emergency Towing ........................... 515
When You Cannot Open the Charge 
Lid ................................................. 516
When You Cannot Disengage the Charging 
Connector.................................................517When You Cannot Open the Trunk .. 518
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482
Handling the Unexpected
If a Tire Goes Flat
Temporarily Repairing a Flat Tire
If the tire has a large cut or is otherwise severely damaged, you will need to have the 
vehicle towed. If the tire only has a smal l puncture, from a nail for instance, you can 
use the temporary tire repair kit so that  you can drive to the nearest service station 
for a more permanent repair.
If a tire goes flat while driving, grasp  the steering wheel firmly, and brake gradually 
to reduce speed. Then stop in a safe place.
1. Park the vehicle on a firm, level, and non-slippery surface and apply the parking 
brake.
2. Change the gear position to 
(P.
3. Turn on the hazard warning lights an d set the power mode to VEHICLE OFF 
(LOCK).
1 Temporarily Repairing a Flat Tire
The kit should not be used in  the following situations. 
Instead, contact an authorized Honda Clarity Electric 
dealer or a roadside assi stant to have the vehicle 
towed.
•The tire sealant has expired.•More than one tire is punctured.
•The puncture or cut is larger than 3/16 inch (4 mm).
•The tire side wall is da maged or the puncture is 
outside the contact area.
•Damage has been caused by  driving with the tire 
extremely under inflated.
•The tire bead is no longer seated.•The rim is damaged.
Do not remove a nail or  screw that punctured the 
tire. If you remove it from the tire, you may not be 
able to repair the puncture using the kit.
When the puncture is:Kit Use
Smaller than 3/16 inch  (4 mm)Yes
Larger than 3/16 inch 
(4 mm)No
Contact 
Area
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Continued483
uuIf a Tire Goes Flat uTemporarily Repairing a Flat Tire
Handling the Unexpected
■Getting Ready to Temporarily Repair the Flat Tire1Getting Ready to Temporarily Repair the Flat Tire
Repair notificati on label and speed restriction label 
are applied to the side of temporary tire repair kit.
When making a temporary repair, carefully read the 
instruction manual provided with the kit.
Pressure Gauge AIR Power Plug
Pressure Relief Button
Repair Notification LabelInstruction Manual
Sealant/Air Hose
REPAIR
Inflator Switch
Speed Restriction Label
Selector Knob
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時8分 
     
        
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484
uuIf a Tire Goes Flat uTemporarily Repairing a Flat Tire
Handling the Unexpected
1. Remove the charging cable by releasing the 
belt.
2. Pull the strap on the right side of the trunk 
and open the lid.
3. Open the fastener and take the kit out of 
the trunk.
4. Place the kit face up, on flat ground near 
the flat tire, and away from traffic. Do not 
place the kit on its side.
Charging Cable
Lid
Fastener
Strap
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Continued485
uuIf a Tire Goes Flat uTemporarily Repairing a Flat Tire
Handling the Unexpected
1. Remove the valve cap from the tire valve 
stem.
2. Remove the sealant/air hose from the 
packaging.
3. Attach the sealant/air hose onto the tire 
valve stem. Screw it until it is tight.
■Injecting Sealant and Air1Injecting Sealant and Air
In cold temperatures, the sealant may not flow easily. 
In this situation, warm it up for five minutes before 
using.
The sealant can permanentl y stain clothing and other 
materials. Be careful duri ng handling and wipe away 
any spills immediately.
3WARNING
Tire sealant contains substances that are 
harmful and can be fatal if swallowed.
If accidentally swallowed, do not induce 
vomiting. Drink plenty  of water and get 
medical attention immediately.
For skin or eye contact, flush with cool 
water and get medical attention if 
necessary.
Valve Stem
Valve Cap
Sealant/Air Hose
Valve Stem
Sealant/Air Hose
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uuIf a Tire Goes Flat uTemporarily Repairing a Flat Tire
486
Handling the Unexpected
4. Plug in the compressor to the accessory 
power socket.
u Be careful not to pinch the cord in a 
door or window.
u Do not plug any other electronic 
devices into other accessory power 
sockets.
2 Accessory Power Sockets  P. 179
5.Turn the power system on.
u Keep the power system on while 
injecting sealant and air.
6. Turn the selector knob to  REPAIR.
1Injecting Sealant and Air
NOTICE
Do not operate the temporary tire repair kit 
compressor for more than 15 minutes. The 
compressor can overheat  and become permanently 
damaged.
There are two accessory power sockets:
•In the back of the console compartment•In the console panel 2Accessory Power Sockets  P. 179
REPAIR
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