2021 HONDA CIVIC SEDAN dead battery

Contents
Child Safety P. 62Exhaust Gas Hazard P. 75Safety Labels P. 76
Opening and Closing the Trunk P. 142 Security System P. 145 Opening and Closing the Windows P. 148
Adjusting the Mirrors P. 170 Adjusting the Seats P. 172
Climate Control System P. 193
Audio Error Messages P. 297 General Information on the Audio System P. 300
Bluetooth ® HandsFreeLink ® P. 355, 382
When Driving P. 422 Honda Sensing ® P. 450 Braking P. 494 Parki ng Your Vehicle P. 501
Fuel Economy and CO
2 Emissions P. 508 Turbo Engine Vehicle* P. 509
Maintenance Under the Hood P. 521 Replacing Light Bulbs P. 536
Checking and Maintaining Tires P. 548 Battery P. 558 Remote Transmitter Care P. 560
Cleaning P. 563 Accessories and Modifications P. 568
Engine Does Not Start P. 580 If the Battery Is Dead P. 583
Indicator, Coming On/Blinking P. 589 Fuses P. 595Emergency Towing P. 599
If You Cannot Open the Trunk P. 601 Refueling P. 602
Devices that Emit Radio Waves P. 609 Reporting Safety Defects P. 610
Authorized Manuals P. 616 Customer Service Information P. 617
Quick Reference GuideP. 6
Safe DrivingP. 33
Instrument PanelP. 77
ControlsP. 125
FeaturesP. 201
DrivingP. 415
MaintenanceP. 511
Handling the UnexpectedP. 571
InformationP. 603
IndexP. 619
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 5 ページ ２０２０年８月２５日　火曜日　午後２時６分

Quick Reference Guide
29
Handling the Unexpected (P 571)
Flat Tire (P 573)
●Park in a safe location and replace the
flat tire with the compact spare tire in the
trunk.
Indicators Come On
(P 589)
●Identify the indicator and consult the
owner's manual.
Engine Won’t Start
(P 580)
●If the battery is dead, jump start using a
booster battery.
Blown Fuse (P 595)
●Check for a blown fuse if an electrical
device does not operate.
Overheating (P 587)
●Park in a safe location. If you do not see
steam under the hood, open the hood,
and let the engine cool down.
Emergency Towing
(P 599)
●Call a professional towing service if you
need to tow your vehicle.
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 29 ページ ２０２０年８月２５日　火曜日　午後２時６分

uuLocking and Unlocking the Doors uLocking/Unlocking the Doors from the Outside
136
Controls
■Unlocking the doors
Press the unlock button.
Once: u Some exterior lights flash twice, and the driver’s door and fuel fill door unlock.
Twice: u The remaining doors unlock.
If the lock or unlock button of the remote
does not work, use the key instead.
Fully insert the key and turn it.
■Locking/Unlocking the Doors Using a Key
1Using the Remote Transmitter
If the distance at which the remote transmitter works
varies, the batter y is probably low.
If the LED does not come on when you press a
button, the battery is dead. 2 Replacing the Button Battery P. 560
You can customize the door unlock mode setting. 2 Customized Features P. 115, 325
1Locking/Unlocking the Doors Using a Key
When you lock the driver’s door with a key, all the
other doors lock at the sa me time. When unlocking,
the driver’s door unlocks first. Turn the key a second
time within a few seconds to unlock the remaining
doors.
You can customize the door unlock mode setting. 2 Customized Features P. 115, 325
Lock
Unlock
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 136 ページ ２０２０年８月２５日　火曜日　午後２時６分

uuSecurity System uSecurity System Alarm
146
Controls
■When the security sy stem alarm activates
The horn sounds intermittently, and some exterior lights flash.
■To deactivate the security system alarm
Unlock the vehicle using remote transmitter or smart entry system*, or turn the
ignition switch to ON
(w*1. The system, along with the horn and flashing lights, is
deactivated.
■Setting the security system alarm
The security system alarm automatically sets when the following conditions have
been met:
• The ignition switch is in LOCK
(0*1.
• The hood and trunk are closed.
• All doors are locked with the key, remo te transmitter, or smart entry system
*.
• The key has been removed from the ignition switch.
■When the security system alarm sets
The security system alarm indi cator in the instrument panel and the blinki ng interval
changes after about 15 seconds.
■To cancel the security system alarm
The security system is canceled when th e vehicle is unlocked using the remote
transmitter or smart entry system
*, or when the ignition switch is turned to ON (w*1.
The security system alarm indica tor goes off at the same time.
*1: Models with the smart entry system have an ENGINE START/STOP button instead of an
ignition switch.
1 Security System Alarm
Do not set the security system alarm when someone
is in the vehicle or a window is open. The system can
accidentally activate when:
•Unlocking the door with the lock tab.•Opening the trunk with the trunk opener on the
driver’s door or the emergency trunk opener.
•Opening the hood with the hood release.•Taking the transmission out of ( P.
If the battery goes dead after you have set the
security system alarm, the security alarm may activate
once the battery is re charged or replaced.
If this occurs, deactivate the security system alarm by
unlocking a door using the remote transmitter or
smart entry system
*.Models without smart entry system
* Not available on all models
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 146 ページ ２０２０年８月２５日　火曜日　午後２時６分

205
uuAudio System uAudio System Theft Protection
Features
Audio System Theft Protection
The audio system is disabled when it is disconnected from the power source, such as
when the battery is disconnected or goes dead. In certain conditions, the system
may display a code entry screen. If this occurs, reactivate the audio system.
■Reactivating the audio system
1. Turn the ignition switch to ON
(w*1.
2. Turn on the audio system.
3. Press and hold the audio system powe r button for more than two seconds.
u The audio system is reac tivated when the audio co ntrol unit establishes a
connection with the vehicl e control unit. If the control unit fails to recognize
the audio unit, you must go to a deal er and have the audio unit checked.
*1: Models with the smart entry system have an ENGINE START/STOP button instead of an
ignition switch.
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 205 ページ ２０２０年８月２５日　火曜日　午後２時６分

494
Driving
Braking
Brake System
Use the parking brake to keep the vehicle stationary when parked. When the
parking brake is applied, you can manually or automatically release it.
■To apply
The electric parking brake can be applied any
time the vehicle has battery, no matter which
position the ignition switch
*1 is in.
Pull the electric parking brake switch up gently
and securely. u The indicator in th e switch comes on.
u The parking brake and brake system
indicator (red) comes on.
■To release
The ignition switch must be ON
(w*1 in order
to release the electric parking brake.
1. Depress the brake pedal.
2. Press the electric parking brake switch.
u The indicator in th e switch goes off.
u The parking brake and brake system
indicator (red) goes off.
Manually releasing the parking brake using
the switch helps your ve hicle start slowly and
smoothly when facing down hill on steep hills.
*1: Models with the smart entry system have an ENGINE START/STOP button instead of an
ignition switch.
■Parking Brake1 Parking Brake
You may hear the electric parking brake system
motor operating from the re ar wheel area when you
apply or release the parki ng brake. This is normal.
The brake pedal may slightly move due to the electric
parking brake system opera tion when you apply or
release the parking br ake. This is normal.
You cannot apply or release the parking brake if the
12-volt battery goes dead. 2 If the Battery Is Dead P. 583
If you pull up and hold the electric parking brake
switch while driving, the brakes on all four wheels
are applied by the VSA
® system until the vehicle
comes to a stop. The electric parking brake then
applies, and the switch should be released.
In the following situations, the parking brake
automatically operates.
•When your vehicle is stopped with the automatic
brake hold system activated for more than 10
minutes.
•When the driver’s seat belt is unfastened while
your vehicle is stopped and the brake hold system
is applied.
•When the engine is turned off while the brake hold
system is applied.
•When there is a problem with the brake hold
system while brake hold is applied.
•When your vehicle is stopped for more than 10
minutes while ACC with Low Speed Follow is
activated.
Electric Parking
Brake Switch
Electric Parking
Brake Switch
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 494 ページ ２０２０年８月２５日　火曜日　午後２時６分

558
Maintenance
Battery
Checking the Battery
The condition of the battery is monitored by a
sensor located on the negative terminal of the
battery. If there is a problem with this sensor,
the driver information in terface will display a
warning message. If this happens, have your
vehicle inspected by a dealer.
Check the battery terminals for corrosion
monthly.
If your vehicle’s battery is disconnected or goes dead:
• The audio system is disabled.
2 Reactivating the audio system P. 205
•The clock resets.
2 Adjusting the Clock P. 126
•
The immobilizer system needs to be reset.
2 Immobilizer System Indicator P. 88
1Battery
WARNING: Battery post, terminals,
and related accessories contain lead
and lead compounds.
Wash your hands after handling.
3WARNING
The battery gives off explosive hydrogen
gas during normal operation.
A spark or flame can cause the battery to
explode with enough force to kill or
seriously hurt you.
When conducting any battery
maintenance, wear prot ective clothing and
a face shield, or have a skilled technician do
it.
Canadian models only
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 558 ページ ２０２０年８月２５日　火曜日　午後２時６分

571
Handling the Unexpected
This chapter explains how to handle unexpected troubles.
ToolsTypes of Tools .................................. 572
If a Tire Goes Flat
Changing a Flat Tire ......................... 573
Engine Does Not Start Checking the Engine ........................ 580
If the Smart Entry Remote Battery is Weak .. 581Emergency Engine Stop ................... 582
If the Battery Is Dead ....................... 583
Shift Lever Does Not Move .............. 586
Overheating How to Handle Overheating ............. 587 Indicator, Coming On/Blinking
If the Low Oil Pressure Indicator Comes On....589
If the Charging System Indicator Comes On ...589
If the Malfunction Indicator Lamp Comes
On or Blinks ................................... 590
If the Brake System Indicator (Red) Comes On or Blinks ................................... 591
If the Brake System Indicator (Red) Comes On or Blinks at the Same Time When the Brake
System Indicator (Amber) Comes On ... 592
If the Electric Power Steering (EPS) System Indicator Comes On ....................... 593 If the Low Tire Pressure/TPMS Indicator
Comes On or Blinks ....................... 594
Fuses Fuse Locations ................................. 595
Inspecting and Changing Fuses ........ 598
Emergency Towing ........................... 599
If You Cannot Unlock the Fuel Fill Door... 600
If You Cannot Open the Trunk ........ 601
Refueling ........................................... 602
21 CIVIC 4D HCM_HMIN_J (KA KL KC)-31TBA6500.book 571 ページ ２０２０年８月２５日　火曜日　午後２時６分