2021 HONDA ACCORD SEDAN Owner's Manual (in English)

167Continued
Controls
Locking and Unlocking the Doors
Key
This vehicle comes with the following keys:
Use the key to start and stop the engine, and to lock and unlock all the doors, fuel
fill door and to open the trunk.1 Key
All the keys have an immobilizer system. The
immobilizer system helps to protect against vehicle
theft. 2 Immobilizer System P. 184
Follow the advice below to prevent damage to the
keys:
•Do not leave the keys in direct sunlight, or in
locations with high temperature or high humidity.
•Do not drop the keys or set heavy objects on them.•Keep the keys away from liquids, dust and sand.
•Do not take the keys apart except for replacing the
battery.
If the circuits in the keys are damaged, the engine
may not start, and the remote transmitter may not
work.
If the keys do not work properly, have them
inspected by a dealer.
You can remotely start the engine using the remote.
2 Remote Engine Start
* P. 416
Models with remote engine starter
Models without smart entry systemModels with smart entry system
* Not available on all models

uuLocking and Unlocking the Doors uKey
168
Controls
The built-in key can be used to lock/unlock the
doors or open the trunk when the remote
battery becomes weak and the power door
lock/unlock operation is disabled.
To remove the built-in key, slide the release
knob and then pull out the key. To reinstall
the built-in key, push th e built-in key into the
remote until it clicks.
Contains a number that you will need if you
purchase a replacement key.
■Built-in Key
Built-in Key
Release Knob
■Key Number Tag1
Key Number Tag
Keep the key number tag separate from the key in a
safe place outside of your vehicle.
If you wish to purchase an additional key, contact a
dealer.
If you lose your key and you cannot start the engine,
contact a dealer.

169
uuLocking and Unlocking the Doors uLow Remote Signal Strength
Controls
Low Remote Signal Strength
The vehicle transmits radio waves to locate the remote when locking/unlocking* the
doors, and fuel fill door, opening* the trunk, or to start the engine.
In the following cases, locking/unlocking
* the doors, and fuel fill door, opening* the
trunk, or to start the engine may be inhibited or operation may be unstable:
• Strong radio waves are being transmitted by nearby equipment.
• You are carrying the remote together with telecommunications equipment,
laptop computers, cell phones, or wireless devices.
• A metallic object is touching or covering the remote.
1Low Remote Signal Strength
Communication between the remote and the vehicle
consumes the remote’s battery.
Battery life is about two years, but this varies
depending on re gularity of use.
The battery is consumed whenever the remote is
receiving strong radio waves. Avoid placing it near
electrical appliances such as televisions and personal
computers.
* Not available on all models

170
uuLocking and Unlocking the Doors uLocking/Unlocking the Doors from the Outside
Controls
Locking/Unlocking the Doors from the Outside
When you carry the remote, you can lock/
unlock the doors, fuel fill door, and open the
trunk.
You can lock/unlock the doors, fuel fill door
within a radius of about 32 inches (80 cm) of
the outside door handle. You can open the
trunk within about 32 inches (80 cm) radius
from the trunk release button.
■Locking the doors
Touch the door lock sensor on the front door.u Some exterior lights flash; the beeper
sounds; all the doors and fuel fill door
lock; and the security system sets.
■Using the Smart Entry System*1Locking/Unlocking the Doors from the Outside
If the interior light switch is in the door activated
position, the interior light comes on when you unlock
the doors.
No doors opened: The li ght fades out after 30
seconds.
Doors relocked: The light goes off immediately.
2 Interior Lights P. 223
Door Lock Sensor
1Using the Smart Entry System*
If you do not open a door within 30 seconds of
unlocking the vehicle with the smart entry system,
the doors and trunk will automatically relock.
You can lock or unlock doors using the smart entry
system only when the power mode is in VEHICLE OFF.
•Do not leave the remote in the vehicle when you
get out. Carry it with you.
•Even if you are not carr ying the remote, you can
lock/unlock the doors whil e someone else with the
remote is within range.
•The door may be unlocked if the door handle is
covered with water in heavy rain or in a car wash if
the remote is within range.
•If you grip a front door ha ndle or touch a door lock
sensor wearing gloves, the door sensor may be
slow to respond or may not respond by unlocking
or locking the doors.
* Not available on all models

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uuLocking and Unlocking the Doors uLocking/Unlocking the Doors from the Outside
Controls
■Unlocking the doors and trunk
Grab the driver’s door handle:u The driver’s door and fuel fill door
unlocks.
u Some exterior lights flash twice and the
beeper sounds twice.
Grab the front passenger’s door handle: u All the doors and fuel fill door unlock.
u Some exterior lights flash twice and the
beeper sounds twice.
Press the trunk release button: u The trunk unlocks and opens.
u A beeper will sound.
2 Using the Trunk Release Button* P. 182
Trunk Release Button
1Using the Smart Entry System*
•After locking the door, you have up to 2 seconds
during which you can pull the door handle to
confirm whether the door is locked. If you need to
unlock the door immediately after locking it, wait
at least 2 seconds befo re gripping the handle,
otherwise the door will not unlock.
•The door might not open if you pull it immediately
after gripping the door handle. Grip the handle
again and confirm that th e door is unlocked before
pulling the handle.
•Even within the 32 inches (80 cm) radius, you may
not be able to lock/unl ock the doors with the
remote if it is above or below the outside handle.
•The remote may not operate if it is too close to the
door and door glass.
The light flash, beep and door unlock mode settings
can be customized using the audio/information
screen.
2 Customized Features P. 352
* Not available on all models

uuLocking and Unlocking the Doors uLocking/Unlocking the Doors from the Outside
172
Controls
■Locking the doors (Walk away auto
lock ®)
When you walk away from the vehicle with all
doors closed while carrying the remote, the
doors will automatically lock.
The auto lock function activates when all
doors are closed, and the remote is within
about 5 feet (1.5 m) radi us of the outside door
handle.
Exit vehicle while carr ying remote and close
door(s).
1. While within about 5 feet (1.5 m) radius of
the vehicle.
u The beeper sounds; the auto lock
function will be activated.
2. Carry the remote beyond about 5 feet
(1.5 m) from the vehicle and remain outside
this range for 2 or more seconds.
u Some exterior lights flash; the beeper
sounds; all doors will then lock.1Locking the doors (Walk away auto lock ®)
The auto lock function is set to OFF as the factory
default setting. The auto lo ck function can be set to
ON using the audio/information screen.
If you set the auto lock function to ON using the
audio/information screen, only the remote that was
used to unlock the driver’s door prior to the setting
change can activate auto lock. 2 Customized Features P. 352
After the auto lock function has been activated,
when you stay within the locking/unlocking
operation range, the indica tor on the remote will
continue to flash until the doors are locked.
When you stay beside the vehicle within the
operation range, the doors wi ll automatically lock
approximately 30 seconds after the auto lock
function activating beeper sounds.
When you open a door after the auto lock function
activating beeper sounds, the auto lock function will
be canceled.
Under the following circumstances, the auto lock
function will not activate:
•The remote is inside the vehicle.
uThe beeper will not sound.
•The remote is taken out of its operational range
before all the doors are closed.
uThe beeper will sound.
The activation range of
the auto lock function is
about 5 feet (1.5 m)

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uuLocking and Unlocking the Doors uLocking/Unlocking the Doors from the Outside
Controls
To temporarily deactivate the function:
1. Set the power mode to OFF.
2. Open the driv er’s door.
3. Using the master door lock switch, operate
the lock as follows:
Lock Unlock Lock Unlock.
u The beeper sounds an d the function is
deactivated.
To restore the function:
• Set the power mode to ON.
• Lock the vehicl e without using the auto lock
function.
• With the remote on yo u, move out of the
auto lock function operation range.
• Open any door.1Locking the doors (Walk away auto lock ®)
The auto lock function does not operate when any of
the following conditions are met.
•The remote is inside the vehicle.
•A door or the hood is not closed.•The power mode is set to any mode other than
OFF.
•The remote is not located within a radius of about
5 feet (1.5 m) from the vehicle when you get out of
the vehicle and close the doors.
Auto lock function operation stop beeper
After the auto lock function has been activated, the
auto lock operation stop beeper sounds for
approximately two seconds in the following cases.
•The remote is put inside the vehicle through a
window.
•You are located too close to the vehicle.
•The remote is put inside the trunk.
If the warning beeper sounds, check that you are
carrying the remote. Then, open/close a door and
confirm the auto lock ac tivation beeper sounds once.

uuLocking and Unlocking the Doors uLocking/Unlocking the Doors from the Outside
174
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 seco nds 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 and 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. 352
You can lock or unlock doors using the remote
transmitter only when the power mode is in VEHICLE
OFF.
The remote transmitter us es low-power signals, so
the operating range may vary depending on the
surroundings.
The remote transmitter will not lock the 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. 588
You can customize the door unlock mode setting. 2 Customized Features P. 352
LED
Unlock Button Lock Button