Keyless/Power Door Locks/Security System Description

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2025 Honda Odyssey, 2024 Honda Odyssey, 2023 Honda Odyssey, 2022 Honda Odyssey, and 2021 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

Overview

Keyless Entry System

The non-selectable unlock function: When you press the LOCK button, all doors lock. When you press the UNLOCK button, all doors unlock. The doors will not lock with the remote if a door is not fully closed, or if the vehicle is in the ON mode.

The selectable unlock function; When you press the LOCK button, all doors lock. When you press the UNLOCK button once, only the driver's door unlocks. The other doors will unlock when you press the button a second time. (Depending on the settings in the multi-information display (MID) all the doors may unlock when you press the button the first time). The doors will not lock with the transmitter if a door is not fully closed, or if the vehicle is in the ON mode.

When the switch for the interior light is in the DOOR position, it comes on when the UNLOCK button is pressed. If a door is not opened, the light goes off and the doors will relock in about 30 seconds. If the doors are locked with the transmitter within 30 seconds, the light goes off immediately.

Door Lock Control

The door lock control function allows the body control module to detect the status of various switch signals and control each actuator in order to lock and unlock the doors.

The system has three circuits between door lock actuators and the body control module to improve safety of the system. One is for the driver's door lock actuator, and others are for the left rear door lock actuator and passenger's side door lock actuators. Door lock actuator circuit has two fuses. When one fuse is blown, another fuse in the same circuit must be checked.

Courtesy of HONDA, U.S.A., INC.

Tailgate Release Control (Without Power Tailgate)

The tailgate release control function allows the body control module to detect the status of various switch signals and control tailgate release actuator in order to unlock the tailgate. The tailgate can be unlocked by the tailgate outer handle switch operation without having the remote, if all the door are unlocked.

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Keyless Door Lock Control

The remote can transmit a lock or unlock signal to the body control module, then the body control module controls the door lock actuator by the B-CAN and various switch signal. The customization menu can also set the relock timer value.

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Keyless Tailgate Unlock Control (Without Power Tailgate)

By pressing the remote tailgate button when each of the door is locked with the vehicle in the OFF (LOCK) mode, the keyless tailgate unlock control simultaneously shifts the mode to the tailgate unlock mode and performs the answerback. After shifting to the tailgate unlock mode, the tailgate can be unlocked by operating the tailgate outer handle switch. If the tailgate is not unlocked for a certain time period after the tailgate unlock mode is set, the mode shifts to the tailgate lock mode, and the tailgate outer handle switch operation is disabled.

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Keyless Answer Back Control

When using the remote, the body control module provides an answer back function to alert the operator that the body control module received a lock or unlock command from the remote. When the body control module receives a lock signal, the body control module sends the turn signal light signal once. When the body control module receives an unlock signal, it sends the turn signal light signal two times.

Lock

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Unlock

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Key Lockout Prevent Function

The body control module monitors whether or not there is the remote in the vehicle. If the remote is in the vehicle, the system will not lock the doors. If the driver manually locks and closes the doors with the remote in the vehicle, the body control module energizes the door lock actuator and unlocks the door. Also, if the tailgate is closed when the remote is left in the vehicle with all the door closed and the driver's door lock knob at lock position, the tailgate can be unlocked by the tailgate outer handle switch operation. In addition, when the keyless lockout prevent function operates, the answer back is performed.

Courtesy of HONDA, U.S.A., INC.

Automatic Door Lock/Unlock Control

The automatic door lock/unlock control function allows the body control module to detect the status of B-CAN signals and various switch signals and control each actuator in order to automatically lock/unlock the doors.

Automatic Door Lock Function:

When the vehicle speed exceeds 9 mph (15 km/h). (Default setting)
When the shift position/mode is out of the P position/mode.

Automatic Door Unlock Function:

When the driver's door switch is ON (door open). (Default setting)
When the shift position/mode is moved to the P position/mode from other than P position/mode.
When the vehicle mode is changed to the OFF (LOCK) mode from the ON mode.

Customizing Function:

The locking method can be set as non-link, link to vehicle speed, link to shift position/mode, or link to engine start/stop switch by the customizing function. For more information about customize options, refer to the Owner's manual.

Security Control

When the security alarm is set, the body control module sends the security set signal using the B-CAN.

Courtesy of HONDA, U.S.A., INC.

Security system operating term

Start setting	Lock the door using a mechanical key. Lock the door by using the remote. Lock the door by pressing the door outer handle lock switch while having the remote *1. Operate a keyless relock.
Cancellation	Unlock the door or tailgate by using the remote. Unlock the door or tailgate by smart entry function 1. Press the engine start/stop switch while having the remote. When a power tailgate open signal is received 3.
Setting conditions (related systems are normally operated)	Door switch OFF (Door close). Door unlock knob switch OFF (Lock) Tailgate latch switch 2 or full latch switch 3 OFF (Tailgate close). Driver's door key cylinder switch OFF. Hood latch switch ON (Hood close). Vehicle OFF (LOCK) mode.
Start the alarm	When any of the monitoring switch signal inputs are received without the signal for cancelling setting.
Cancel the alarm	Compliant with the conditions for cancelling setting.

*1: With smart entry function*2: Without power tailgate*3: With power tailgate

Security Setting

When the security alarm is set, the body control module sends the security set signal using the B-CAN. When the gauge control module receives a security set signal from the body control module, the security indicator flashes at a slower pace to indicate the system has armed.

Courtesy of HONDA, U.S.A., INC.

Security Alarm

With the security system armed, manually opening the hood, the tailgate, or moving the door lock knob to the unlock position, activates the security alarm. Alternatively, the security alarm sounds, the headlights low beam, the front position lights, the taillights, the license plate light, and the side marker lights blink, repeating this alarm (one cycle is 120 seconds). Even if you remove the 12 volt battery, the alarming state cannot be changed. The alarm starts again when reinstalling the 12 volt battery.

Courtesy of HONDA, U.S.A., INC.

Security Answer Back Control

When the body control module receives a lock signal, the body control module sends signals once to the turn signal lights, and the keyless buzzer or the horn will sound once when you operates the lock again within 5 seconds.

Courtesy of HONDA, U.S.A., INC.