2021 HONDA RIDGELINE battery

117Continued
Controls
Locking and Unlocking the Doors
Key
This vehicle comes with the following key:Use the key to start and stop the engine, and
to lock or unlock all the doors or open the
trunk.u The tailgate lock/unlock function is set to
disable as the factory default setting. The
tailgate lock/unlock f unction can be used
by using the audio/information screen.
2 Customized Features P. 298
1Key
All the keys have an immobilizer system. The
immobilizer system helps to protect against vehicle
theft. 2 Immobilizer System P. 136
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
engine start. 2 Remote Engine Start P. 387
Smart Entry Remote

uuLocking and Unlocking the Doors uKey
118
Controls
The built-in key can be used to lock/unlock the
doors or open the trunk when the smart entry
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
smart entry remote until it clicks.
Contains a number that you will need if you
purchase a replacement key.
■Built-in Key
Release Knob Built-in Key
■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.

119
uuLocking and Unlocking the Doors uLow Smart Entry Remote Signal Strength
Controls
Low Smart Entry Remote Signal Strength
The vehicle transmits radio waves to loca te the smart entry remote when locking/
unlocking the doors, opening the trunk, or to start the engine.
In the following cases, locking/unlocking the doors, opening the trunk, or starting
the engine may be inhibited or operation may be unstable:
• Strong radio waves are being transmitted by nearby equipment.
• You are carrying the smart entry remo te together with telecommunications
equipment, laptop computers, ce ll phones, or wireless devices.
• A metallic object is touching or covering the smart entry remote.1Low Smart Entry Remote Signal Strength
Communication between the smart entry remote and
the vehicle consumes the smart entry remote’s
battery.
Battery life is about two years, but this varies
depending on re gularity of use.
The battery is consumed whenever the smart entry
remote is receivi ng strong radio wave s. Avoid placing
it near electrical appliances such as televisions and
personal computers.

Continued125
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
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 unlocks.
Twice: u Some exterior light s flash twice, the
remaining doors unlock.
■Using the Remote Transmitter1 Using 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. 298
You can lock or unlock the 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 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. 527
You can customize the door unlock mode setting. 2 Customized Features P. 298
LED
Unlock
Button Lock
Button

133
Controls
Opening and Closing the Trunk
Precautions for Opening/Closing the Trunk
■Opening the trunk
Open the trunk all the way. u If it is not fully opened, the trunk lid may begin to close under its own weight.
■Closing the trunk
Keep the trunk lid closed while driving to:
u Avoid possible damage.
Using the key
If the smart entry remote battery or the ve hicle battery is dead, use the key instead
of the smart entry remote. 1.Swing open the tailgate.
2. Fully insert the key and turn it.
3. Open the trunk.
1Opening and Closing the Trunk
3WARNING
Anyone caught in the path of a tailgate
that is being opened or closed can be
seriously injured.
Make sure that all people are clear of the
tailgate before opening or closing it.

Continued137
uuSecurity System uSecurity System Alarm
Controls
■To deactivate the security system alarm
Unlock the vehicle using the key, remote tra nsmitter, or smart entry system, or the
power mode is set to ON. 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 system.
■When the security system alarm sets
The security system alarm in dicator 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 wh en the vehicle is unlocked using the key,
remote transmitter, or smart entry system, or when the power mode is set to ON.
The security system alarm indica tor goes off at the same time.
1Security 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 release or the
emergency trunk opener.
•Opening the hood with the hood release.
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 system.

145Continued
Controls
Operating the Switches Around the Steering Wheel
ENGINE START/STOP Button
*1:Canadian models
■Changing the Power Mode1ENGINE START/STOP Button
ENGINE START/STOP Button Operating Range
You can start the engine when the smart entry
remote is inside the vehicle.
If the battery of the smar t entry remote is getting
low, the engine may not start when you push the
ENGINE START/STOP button. If the engine does not
start, refer to the following link. 2 If the Smart Entry Remote Battery is Weak
P. 550
The engine may also run if the smart entry remote is
close to the door or window, ev en if it is outside the
vehicle.
ON mode:
The ENGINE START/STOP button is on (in red), if the
engine is running.
Operating Range
VEHICLE OFF (LOCK)
The button is off.
The steering wheel is locked
*1.
The power to all electrical components is turned
off.
ACCESSORY
The button blinks (in red).
Operate the audio system and other accessories
in this position.
ON
The button blinks (in red).
All electrical components can be used.
Press the button.
Without
pressing the
brake pedal

uuOperating the Switches Around the Steering Wheel uENGINE START/STOP Button
146
Controls
If you leave the vehicle for 30 to 60 minutes with the transmission in (P and the
power mode in ACCESSORY, the vehicle auto matically goes into the mode similar to
VEHICLE OFF (LOCK) to avoid draining the battery.
When in this mode:
The steering wheel does not lock.
You cannot lock or unlock doors with th e remote transmitter or the smart entry
system.
Press the ENGINE START/STOP button to switch the mode to VEHICLE OFF (LOCK).
If you open the driver’s door when the power mode is set to ACCESSORY, a warning
beep sounds.
■Automatic Power Off
■Power Mode Reminder
1 ENGINE START/STOP Button
If the power mode does not change from VEHICLE
OFF to ACCESSORY, press the ENGINE START/STOP
button while moving the st eering wheel left and
right. The steering wheel will unlock, allowing the
mode to change.
Do not leave the power mode in ACCESSORY or ON
when you get out.
Canadian models
Canadian models