2021 HONDA CIVIC HATCHBACK fuel

609
Maintenance
Checking and Maintaining Tires
Checking Tires
To safely operate your vehicle, your tires must be of the proper type and size, in
good condition with adequate tread, and properly inflated.
■Inflation guidelines
Properly inflated tires provid e the best combination of hand ling, tread life, and comfort.
Refer to the driver’s doorjamb label or spec ifications page for the specified pressure.
Underinflated tires wear unev enly, adversely affect handling and fuel economy, and
are more likely to fail from overheating.
Overinflated tires make your vehicle ride ha rshly, are more prone to road hazards,
and wear unevenly.
Every day before you drive, look at each of the tires. If one looks lower than the
others, check the pressure with a tire gauge.
At least once a month or before long trips , use a gauge to measure the pressure in
all tires, including the spare
*. Even tires in good condition can lose 1–2 psi (10–20
kPa, 0.1–0.2 kgf/cm2) per month.
■Inspection guidelines
Every time you check inflation, also examine the tires and valve stems.
Look for:
• Bumps or bulges on the side or in the tr ead. Replace the tire if you find any cuts,
splits, or cracks in the side of the tire . Replace it if you see fabric or cord.
• Remove any foreign objects and inspect for air leaks.
• Uneven tread wear. Have a deal er check the wheel alignment.
• Excessive tread wear.
2 Wear Indicators P. 614
•Cracks or other damage around valve stem.
1Checking Tires
Measure the air pressure when tires are cold. This
means the vehicle has been parked for at least three
hours, or driven less than 1 mile (1.6 km). If
necessary, add or releas e air until the specified
pressure is reached.
If checked when hot, tire pressure can be as much as
4–6 psi (30–40 kPa, 0.3–0.4 kgf/cm
2) higher than if
checked when cold.
Whenever tire pressure is adjusted, you must
calibrate the TPMS. 2 TPMS Calibration P. 483
Have a dealer check the tires if you feel a consistent
vibration while driving. Ne w tires and any that have
been removed and reinst alled should be properly
balanced.
Check the spare tire
* pressure once a month or
before long trips.
3WARNING
Using tires that are excessively worn or
improperly inflated can cause a crash in
which you can be seriously hurt or killed.
Follow all instruction s in this owner’s
manual regarding tire inflation and
maintenance.
U.S. models
* Not available on all models
21 CIVIC 5D HUM-31TGG6400_01.book 609 ページ ２０２０年８月２８日　金曜日　午後１時 ４８分

628
uuCleaning uExterior Care
Maintenance
Exterior Care
Dust off the vehicle body after you drive. Re gularly inspect your vehicle for scratches
on painted surfaces. A scratch on a painted surface can result in body rust. If you
find a scratch, pr omptly repair it.
Wash the vehicle regularly. Wash more frequently when driving in the following
conditions:
• If driving on roads with road salt.
• If driving in coastal areas.
• If tar, soot, bird droppings, insects, or tree sap are stuck to painted surfaces.
• Make sure to follow the instructions indicated on the automated car wash.
• Fold in the door mirrors.
• For models equipped with automatic inte rmittent wipers, turn the wipers off.
• Keep sufficient distance between the cleaning nozzl e and the vehicle body.
• Take particular care around the windows. Standing too close may cause water to
enter the vehicle interior.
• Do not spray high pressure water directly into the engine compartment. Instead,
use low pressure water and a mild detergent.
■Washing the Vehicle
■Using an Automated Car Wash
■Using High Pressure Cleaners
1 Washing the Vehicle
Do not spray water into the air intake and hood
intake
* vents. It can cause a malfunction.
Do not spray water onto the fuel fill door directly. A
high-pressure spray ma y cause it to open.
Air Intake Vents
1.5 L engine models
Hood
Intake Vent2.0 L engine models
Air Intake
Vents
* Not available on all models
21 CIVIC 5D HUM-31TGG6400_01.book 628 ページ ２０２０年８月２８日　金曜日　午後１時 ４８分

Continued629
uuCleaning uExterior Care
Maintenance
A good coat of automotive body wax helps protect your vehicle’s paint from the
elements. Wax will wear off over time and expose your vehicle’s paint to the
elements, so reapply as necessary.
If you get gasoline, oil, engine coolant, or battery fluid on resin coated parts, they
may be stained or the coating may peel. Prom ptly wipe it away using a soft cloth and
clean water.
Wipe using a glass cleaner.
Aluminum is susceptible to deterioration caused by salt and other road
contaminants. When necessary, as early as possible use a sponge and mild detergent
to wipe away these contaminants. Do no t use a stiff brush or harsh chemicals
(including some commercial wheel cleaners). These can damage the protective finish
on aluminum alloy wheels, resulting in corrosion. Depending on the type of finish,
the wheels also may lo se their luster or appear burn ished. To avoid water stains,
wipe the wheels dry with a cloth while they are still wet.
■Applying Wax
■Maintaining the Bumpers and Other Resin Coated Parts
■Cleaning the Window
■Maintaining Aluminum Wheels
1 Washing the Vehicle
If you need to lift the wiper arms away from the
windshield, first set the wiper arms to the
maintenance position.
2 Changing the Front Wiper Blade Rubber
P. 604
Do not spray water onto the capless unit when the
fuel fill door is open. It ca n cause damage to the fuel
system or engine.
1 Applying Wax
NOTICE
Chemical solvents and strong cleaners can damage
the paint, metal, and plasti c on your vehicle. Wipe
away spills immediately.
1 Maintaining the Bumpers an d Other Resin Coated Parts
Ask a dealer about the corr ect coating material when
you want to repair the pa inted surface of the parts
made of resin.
21 CIVIC 5D HUM-31TGG6400_01.book 629 ページ ２０２０年８月２８日　金曜日　午後１時 ４８分

633
Handling the Unexpected
This chapter explains how to handle unexpected troubles.
ToolsTypes of Tools .................................. 634
If a Tire Goes Flat
Temporarily Repairi ng a Flat Tire....... 635
Changing a Flat Tire ......................... 648
Handling of the Jack
*
How to Set Up the Jack .................... 656
Engine Does Not Start Checking the Engine ........................ 659
If the Smart Entry Remote Battery is Weak .. 660
Models with temporary tire repair kit
Models with a compact spare tire
Canadian models with temporary tire repair kit
Models with smart entry system
Emergency Engine Stop ................... 661
If the Battery Is Dead ....................... 662
Shift Lever Does Not Move .............. 665
Overheating ...................................... 666
Indicator, Coming On/Blinking
If the Low Oil Pressure Indicator Comes On................................................ 668
If the Charging System Indicator Comes
On ................................................. 668
If the Malfunction Indicator Lamp Comes On or Blinks ................................... 669
If the Brake System Indicator (Red) Comes
On or Blinks ................................... 670
Models with smart entry systemIf the Brake System Indicator (Red) Comes On or
Blinks at the Same Time When the Brake System
Indicator (Amber) Comes On ....................... 671
If the Electric Power Steering (EPS) System Indicator Comes On......................... 672
If the Low Tire Pressure/TPMS Indicator
Comes On or Blinks
*...................... 673
Fuses Fuse Locations ................................. 674
Inspecting and Changing Fuses ........ 678
Emergency Towing ........................... 679
If You Cannot Unlock the Fuel Fill Door.. 680If You Cannot Open the Hatch ........ 681
Refueling ........................................... 682
* Not available on all models
21 CIVIC 5D HUM-31TGG6400_01.book 633 ページ ２０２０年８月２８日　金曜日　午後１時 ４８分

659
Handling the Unexpected
Engine Does Not Start
Checking the Engine
If the engine does not start, check the starter.
Starter conditionChecklist
Starter doesn’t turn or turns
over slowly.
The battery may be dead. Check
each of the items on the right and
respond accordingly.
Check for a message on the driver information interface.●If the To Start, Hold Remote Near Start Button message appears2If the Smart Entry Remote Battery is Weak P. 660
uMake sure the smart entry remote is in its operating range.2 ENGINE START/STOP Button Operating Range P. 172
Check the brightness of the interior lights.
Turn on the interior lights and check the brightness.
●If the interior lights are dim or do not come on at all2 Battery P. 620●If the interior lights come on normally2 Fuses P. 674
The starter turns over normally
but the engine doesn’t start.
There may be a problem with the
fuse. Check each of the items on
the right and respond accordingly. Review the engine start procedure.
Follow its instructions, and try
to start the engine again.
2 Starting the Engine P. 451
Check the immobilize r system indicator.
When the immobilizer system indicator is blinking, the engine cannot be started.
2 Immobilizer System P. 163
Check the fuel level.
There should be enough fuel in the tank.
2 Fuel Gauge P. 122
Check the fuse.
Check all fuses, or have the vehicle checked by a dealer.
2Inspecting and Changing Fuses P. 678
If the problem continues:2Emergency Towing P. 679
1Checking the Engine
If you must start the vehi cle immediately, use an
assisting vehicle or booster battery to jump start it.
2 If the Battery Is Dead P. 662
Models with smart entry system
21 CIVIC 5D HUM-31TGG6400_01.book 659 ページ ２０２０年８月２８日　金曜日　午後１時 ４８分

677
uuFuses uFuse Locations
Handling the Unexpected
■Circuit protected and fuse rating
Circuit ProtectedAmps
1Accessory10 A
2Key Lock(5 A)
3Rear Wiper Motor*(10 A)
4Front Sensor Camera*1, *
Transmission*2, *3(5 A)
(10 A)
5Option(10 A)
6SRS Indicator(10 A)
7Meter10 A
8Fuel Pump15 A*4
20 A*5
9AIRCON10 A
10−−
11Engine Control*45A
12Passenger’s Side Door Lock10 A
13Driver’s Side Rear Door Unlock10 A
14Rear Driver’s Side Power
Window(20 A)
15Front Passenger’s Side Power Window20 A
16Door Lock20 A
17Transmission*1, *3
Front Sensor Camera*2, *(10 A)(5 A)
18−−
19Moonroof(20 A)
20−−
21ACG10 A
22Daytime Running Lights(10 A)
23−−
24Front Sensor Camera*(5 A)
25Driver’s Door Lock(10 A)
26Passenger’s Side Door Unlock10 A
27Rear Passenger’s Side
Power Window(20 A)
28Driver’s Power Window20 A
Circuit ProtectedAmps
*1:Models with smart entry system
*2:Models without smart entry system
*3:Continuously variable transmission models
*4:1.5 L engine models
*5:2.0 L engine models
29Front Accessory Power
Socket20 A
30 Smart Entry
*1(10 A)
STS*2(5 A)
31Driver’s Power Seat Reclining*(20 A)
32 Front Seat Heater
*(20 A)
33Driver’s Power Seat Sliding*(20 A)
34 VSA/ABS 10 A
35SRS10 A
36 − −
37Option(10 A)
38 Driver’s Side Rear Door
Lock 10 A
39Driver’s Door Unlock(10 A)
Circuit ProtectedAmps
* Not available on all models
21 CIVIC 5D HUM-31TGG6400_01.book 677 ページ ２０２０年８月２８日　金曜日　午後１時
４８分

680
Handling the Unexpected
If You Cannot Unlock the Fuel Fill Door
If you cannot unlock the fuel fill door, use the following procedure.1.Open the hatch.
2. Open the cargo floor lid.
2. Pull the strap on the cargo area floor lid and
open the lid.
3. Turn and pull the tab to open the
compartment cover located on the left side
of the cargo area.
4. Pull the release cord toward you.
u The release cord unlocks the fuel fill door
when it is pulled.
■What to Do If Unable to Unlock the Fuel Fill Door1If You Cannot Unlock the Fuel Fill Door
After taking these steps, cont act a dealer to have the
vehicle checked.
Release CordModels with tool case
Models with tool bag
All models
21 CIVIC 5D HUM-31TGG6400_01.book 680 ページ ２０２０年８月２８日　金曜日　午後１時 ４８分

682
Handling the Unexpected
Refueling
Refueling From a Portable Fuel Container
If you have run out of fuel and need to refuel your vehicle from a portable fuel
container, use the funnel pr ovided with your vehicle.
1.Turn off the engine.
2. Press on the edge of the fuel fill door to
make it pop up slightly.
u The fuel fill door opens.
3. Take the funnel out of the cargo area.
2 Types of Tools P. 634
4.Place the end of the funnel on the lower
part of filler opening, then insert it slowly
and fully.
u Make sure that the end of the funnel
goes down along with the filler pipe.
5. Fill the tank with fuel from the portable fuel
container.
u Pour fuel carefully so you do not spill any.
6. Remove the funnel from the filler neck.
u Wipe up any fuel from the funnel before
storing it.
7. Shut the fuel fill door by hand.
1Refueling From a Portable Fuel Container
NOTICE
Do not insert the nozzle of a portable fuel container
or any funnel other than the one provided with your
vehicle. Doing so can damage the fuel system.
Do not try to pry open or push open the sealed fuel
tank with foreign objects. This can damage the fuel
system and its seal.
Make sure the fuel in the portable fuel container is
gasoline before you refuel.
3WARNING
Gasoline is highly flammable and explosive.
You can be burned or seriously injured
when handling fuel.
• Stop the engine, and keep heat, sparks,
and flame away.
• Handle fuel only outdoors.
• Wipe up spills immediately.
Funnel
21 CIVIC 5D HUM-31TGG6400_01.book 682 ページ ２０２０年８月２８日　金曜日　午後１時 ４８分