Section 20 (Security System / Keyless Entry System - Testing & Troubleshooting)
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.
- Check
- General Information
- Symptom Troubleshooting Index for Viewer
- All the doors will not lock and unlock
- All the doors will not lock or unlock with driver's door key cylinder or door lock switch or keyless remote
- Auto door unlock does not work
- Cannot select ON mode with keyless access and with the keyless remote touching the engine start/stop switch
- Cannot select ON mode with keyless access, but can select ON mode with the keyless remote touching the engine start/stop switch
- Cannot select ON mode with the keyless remote touching the engine start/stop switch, but can select ON mode with keyless access
- Doors automatically relock 30 seconds after being unlocked with the remote even though a door has been opened
- Driver's door will not lock or unlock
- Engine does not crank (power supply is normal)
- Engine start/stop switch does not work
- Front passenger's door will not lock or unlock
- Left sliding door will not lock or unlock
- Passenger doors will not unlock with the remote or key cylinder switch, but will unlock with the inside door unlock switch
- Right sliding door will not lock or unlock
- Security alarm system will not arm
- Security indicator blinks
- The doors will not unlock or lock with the door outer handle touch sensor or lock switch, but will unlock or lock with the keyless remote
- The doors will not unlock or lock with the keyless remote, but will unlock or lock with the door outer handles
- The engine starts, but stalls immediately
- The horn does not sound and/or the headlights do not flash when the PANIC button on the remote is pressed
- The mode changes between ACCESSORY and ON, but it does not change to OFF
- The mode changes between ACCESSORY and ON, but it is difficult to change to OFF
- The security system sounds randomly while the doors are locked
- Component Location Index
- Service Information
- Description & Operation
- Keyless Access System Description
- Keyless Access System Description - Components
- Keyless Access System Description - System Diagram
- Keyless/Power Door Locks/Security System Description
- Keyless/Power Door Locks/Security System Description - Components
- Keyless/Power Door Locks/Security System Description - System Diagram
- DTC Troubleshooting
- Connector View
- Circuit Diagram
- Symptom Troubleshooting
- Keyless Access System Symptom Troubleshooting - All the doors will not lock and unlock
- Keyless Access System Symptom Troubleshooting - Cannot select ON mode with keyless access and with the keyless remote touching the engine start/stop switch (2018 2019 2020 2021 2022 2023 2024)
- Keyless Access System Symptom Troubleshooting - Cannot select ON mode with keyless access and with the keyless remote touching the engine start/stop switch (2025)
- Keyless Access System Symptom Troubleshooting - Cannot select ON mode with keyless access, but can select ON mode with the keyless remote touching the engine start/stop switch (Blind Spot Information (BSI) System) (2018 2019 2020 2021 2022 2023 2024)
- Keyless Access System Symptom Troubleshooting - Cannot select ON mode with keyless access, but can select ON mode with the keyless remote touching the engine start/stop switch (2025)
- Keyless Access System Symptom Troubleshooting - Security indicator blinks (Blind Spot Information (BSI) System) (2018 2019 2020 2021 2022 2023 2024)
- Keyless Access System Symptom Troubleshooting - Immobilizer/security indicator blinks (2025)
- Keyless Access System Symptom Troubleshooting - The doors will not unlock or lock with the door outer handle touch sensor or lock switch, but will unlock or lock with the keyless remote
- Keyless Access System Symptom Troubleshooting - The doors will not unlock or lock with the keyless remote, but will unlock or lock with the door outer handles
- Keyless Access System Symptom Troubleshooting - The engine starts, but stalls immediately (2018 2019 2020 2021 2022 2023 2024)
- Keyless Access System Symptom Troubleshooting - The engine starts, but stalls immediately (2025)
- Keyless/Power Door Locks/Security System Symptom Troubleshooting - AUTO DOOR UNLOCK does not work (2018 2019 2020 2021 2022 2023 2024)
- Keyless/Power Door Locks/Security System Symptom Troubleshooting - AUTO DOOR UNLOCK does not work (2025)
- Keyless/Power Door Locks/Security System Symptom Troubleshooting - Doors automatically relock 30 seconds after being unlocked with the remote even though a door has been opened (2018 2019 2020 2021 2022 2023 2024)
- Keyless/Power Door Locks/Security System Symptom Troubleshooting - Doors automatically relock 30 seconds after being unlocked with the remote even though a door has been opened (2025)
- Keyless/Power Door Locks/Security System Symptom Troubleshooting - Security alarm system will not arm (2018 2019 2020 2021 2022 2023 2024)
- Keyless/Power Door Locks/Security System Symptom Troubleshooting - Security alarm system will not arm (2025)
- Keyless/Power Door Locks/Security System Symptom Troubleshooting - The horn does not sound and/or the headlights do not flash when the PANIC button on the remote is pressed
- Symptom Troubleshooting Index
- Test