2020 HONDA ACCORD SEDAN dead battery

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Quick Reference Guide
Handling the Unexpected (P 667)
Flat Tire (P 669)
●Park in a safe location and replace the
flat tire with the compact spare tire in the
trunk.
Indicators Come On
(P 685)
●Identify the indicator and consult the
owner’s manual.
Engine Won’t Start
(P 675)
●If the battery is dead, jump start using a
booster battery.
Blown Fuse (P 692)
●Check for a blown fuse if an electrical
device does not operate.
Overheating (P 683)
●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 697)
●Call a professional towing service if you
need to tow your vehicle.

Continued173
uuLocking and Unlocking the Doors uLocking/Unlocking the Doors from the Outside
Controls
■Locking the doors
Press the lock button.
Once: u Some exterior lights flash, all the doors
and fuel fill door lock , and the security
system sets.
Twice (within five se conds after the first
push): u Some exterior lights flash, the beeper
sounds and verifies the security system is
set.
■Unlocking the doors
Press the unlock button.
Once: u Some exterior lights flash twice, and the
driver’s door, fuel fill door unlocks.
Twice: u Some exterior lights flash twice, and the
remaining doors unlock.
■Using the Remote Transmitter1Using the Remote Transmitter
If you do not open a door within 30 seconds of
unlocking the vehicle with the remote transmitter,
the doors will automatically relock.
You can change the relock timer setting. 2 Customized Features P. 372, 383
You can lock or unlock doors using the remote
transmitter only when the power mode in VEHICLE
OFF.
The remote transmitter us es low-power signals, so
the operating range may vary depending on the
surroundings.
The remote will not lock th e vehicle when a door is
open.
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. 657
You can customize the door unlock mode setting. 2 Customized Features P. 372, 383
LED
Unlock Button Lock Button

184
uuSecurity System uSecurity System Alarm
Controls
Security System Alarm
The security system alarm activates wh en the trunk, hood or doors are forcibly
opened. The alarm does not activate if th e trunk or doors are opened with the key,
remote transmitter, or smart entr y with push button start system
*.
However, the alarm activates if a door is opened with the key and then the
transmission is taken out of
(P (continuously variable transmission models) or the
hood is opened before the power mode is in ON.
■When the security sy stem alarm activates
The horn sounds intermittently, and some the exterior lights flash.
■To deactivate the security system alarm
Unlock the vehicle using the key, remote transmitter or smart entry with push
button start system
*. 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 power mode is set to VEHICLE OFF (LOCK).
• The hood is closed.
• All doors and trunk are locked from outsid e with the key, remote transmitter, or
smart entry with push button start system
*.
■When the security system alarm sets
The security system alarm indicator in the instrument panel blinks and the blinking
interval changes after about 15 seconds.
■To cancel the security system alarm
The security system alarm is canceled when the vehicle is unlocked using the key*,
remote transmitter or smart entry with push button start system*, or when the power
mode is set to ON. The security system alarm indicator goes off at the same time.
1 Security System Alarm
Do not alter the system or add other devices to it.
Doing so may damage the system and make your
vehicle inoperable.
The security alarm continues for a maximum of two
minutes until the security system alarm deactivates.
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 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 go off
once the battery is re charged or replaced.
If this occurs, deactivate the security system alarm by
unlocking a door using the ke y, remote transmitter,
or smart entry with push button start system
*.
Continuously variable transmission models
* Not available on all models

249
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. Set the power mode to ON.
2. Turn on the audio system.
3. Press and hold the audio system power knob 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 dealer and have the audio unit checked.

575Continued
Driving
Braking
Brake System
Use the parking brake to keep the vehicle stationary when parked. When the
parking brake is applied, you can manu ally or automatically release it.
■To apply
The electric parking brake can be applied any
time the vehicle has battery, no matter which
position the power mode is in.
Pull the electric parking brake switch up gently
and securely. u The indicator in the switch comes on.
u The parking brake indicator (red) comes
on.
■Parking Brake1Braking
When you depress the brak e pedal, you may hear a
whirring sound from the engine compartment. This is
because the brake system is in operation, and it is
normal.
1 Parking Brake
You may hear the electric parking brake system
motor operating from the re ar wheel area when you
apply or release the parking 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
battery goes dead. 2 Jump Starting P. 678
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.
Automatic transmission/Continuously
variable transmission models
Electric Parking Brake Switch
Manual transmission models
Electric Parking Brake Switch

655
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 interface will display a
warning message. If this happens, have you
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. 249
•The clock resets.
2 Clock P. 164
•The immobilizer system needs to be reset.
2 Immobilizer System Indicator P. 95
1Battery
WARNING: Battery post, terminals,
and related accessories contain lead
and lead compounds.
Wash your hands after handling.
When you find corrosion, cl ean the battery terminals
by applying a baking powder and water solution.
Clean the terminals with a damp towel. Cloth/towel
dry the battery. Coat the terminals with grease to
help prevent future corrosion.
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

675
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 appears2 If the Remote Battery is Weak P. 676
uMake sure the remote is in its operating range.2 ENGINE START/STOP Button Operating Range P. 190
Check 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 all2Battery P. 655●If the interior lights come on normally2 Inspecting and Changing Fuses P. 696
The starter turns over normally
but the engine doesn’t start.
There may be a problem with a
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. 467, 468, 469
Check the immobilize r system indicator.
When the immobilizer system indicator is blinking, the engine cannot be started.
2 Immobilizer System P. 183
Check the fuel level.
There should be enough fuel in the tank.
2 Fuel Gauge P. 137
Check the fuses.
Check all fuses, or have the vehicle checked by a dealer.
2 Inspecting and Changing Fuses P. 696
If the problem continues:2Emergency Towing P. 697
1Checking the Engine
If you must start the vehi cle immediately, use an
assisting vehicle or booster battery to jump start it.
2 Jump Starting P. 678

711Continued
Information
Emissions Testing
Testing of Readiness Codes
Your vehicle has readiness codes as part of the onboard self diagnostic system.
Some States use these codes for testing to verify whether your vehicle’s emissions
components are working properly.
The codes may not be read properly if testing is performed just after the battery has
gone dead or been disconnected.
To check if they are set, set the power mo de to ON, without starting the engine. The
malfunction indicator lamp will come on for several seconds. If it then goes off, the
readiness codes are set. If it blinks fi ve times, the readiness codes are not set.
If you are required to have your vehicle te sted before the readiness codes are ready,
prepare the vehicle for retest ing by doing the following:
1. Fill the gas tank to approximately 3/4 full.
2. Park the vehicle and leave the engine off for 6 hours or more.
3. Make sure the ambient temperature is between 40°F and 95°F (4°C and 35°C).
4. Start the engine without touching the ac celerator pedal, and let it idle for 20
seconds.
5. Keep the vehicle in
(P (automatic transmission/continuously variable
transmission) or neutral (manual transm ission). Increase the engine speed to
2,000 rpm, and hold it there for about 3 minutes.
6. Let the engine idle with your foot off the accelerator for 20 seconds.
1Testing of Readiness Codes
The readiness codes are erased when the battery is
disconnected, and set again onl y after several days of
driving under a variety of conditions.
If a testing facility determines that the readiness
codes are not set, you may be requested to return at
a later date to complete the test.
If the testing facility determines the readiness codes
are still not set, see a dealer.