Aventon – ACU Replacement Programming ProcedureUpdated 2 days ago
This article explains the ACU replacement programming process for compatible Aventon bikes.
Use this article if:
your Aventon bike has had an ACU replaced
your bike has had an ECU, display, or controller replaced together
pairing or configuration is required after replacement
support has instructed you to complete the ACU setup process
If you are unsure whether your bike requires this process, please contact support before continuing.
Before You Start
Prepare:
order number
Aventon model
photo/video of the issue
mobile phone with the Aventon app installed
bike serial number
photo of any QR codes shown during setup
confirmation of which parts were replaced
photos of visible damage, if any
Before starting:
ensure the bike battery is charged
ensure Bluetooth is enabled on your phone
ensure the bike powers on
ensure the display turns on
Safety warnings:
Do not open sealed electrical components.
Do not work on wiring while the bike is powered on or charging.
Stop and contact support if you are unsure.
Do not continue if there is visible damage, smoke, overheating, or a burning smell.
What This Procedure Does
This procedure allows the bike to complete setup and configuration after an ACU, ECU, display, or controller replacement.
Possible Causes
ACU replacement requiring setup
ECU replacement requiring configuration
display replacement requiring configuration
controller replacement requiring configuration
pairing or communication issue after replacement
Troubleshooting Steps
Step 1 – Confirm Which Parts Were Replaced
Check whether the ACU, ECU, display, or controller has been replaced.
If yes
Continue to Step 2.
If no
Contact support before continuing.
Replacing the ECU, Display and Controller at the Same Time
Step 2 – Power On the Bike
Insert the battery and power on the bike.
If yes
Continue to Step 3.
If no
Please contact our support team with the photos/videos listed below so we can review the next step.
Step 3 – Open the Aventon App
Open the Aventon app on your phone.
Select the bike pairing option.
If yes
Continue to Step 4.
If no
Check your Bluetooth connection and try again.
If the issue remains, contact support.
Step 4 – Scan the QR Code
Use the Aventon app to scan the QR code shown on the bike or display.
If yes
Continue to Step 5.
If no
Take a clear photo of the QR code and contact support.
Step 5 – Complete Configuration
Follow the prompts shown in the Aventon app until configuration is completed.
If yes
The setup process is complete.
If no
Continue to Step 6.
Step 6 – Check for Error Messages
Check whether the app displays an error message during setup.
If yes
Take a screenshot or photo of the error message and contact support.
If no
Retry the setup process.
If the issue remains, contact support.
Replacing the ECU, Display and Controller at the Same Time Using the Power Adapter Cable
Step 7 – Connect the Power Adapter Cable
Connect the provided power adapter cable to the ECU.
If yes
Continue to Step 8.
If no
Do not force the connection. Contact support.
Step 8 – Power On the Bike
Insert the battery and power on the bike.
If yes
Continue to Step 9.
If no
Contact support.
Step 9 – Open the Aventon App
Open the Aventon app and begin the bike pairing process.
If yes
Continue to Step 10.
If no
Check Bluetooth is enabled and retry.
If the issue remains, contact support.
Step 10 – Scan the QR Code
Use the Aventon app to scan the QR code shown during setup.
If yes
Continue to Step 11.
If no
Take a photo of the QR code and contact support.
Step 11 – Complete Configuration
Follow the prompts shown in the app until configuration is completed.
If the issue clears
The setup process is complete. Monitor the bike during normal use.
If the issue remains
Please contact our support team with the photos/videos listed below so we can review the next step.
Error Messages
Configuration Error
If the app displays a configuration error:
retry the setup process
ensure Bluetooth remains enabled
ensure the bike remains powered on
If the issue remains
Please contact our support team with the photos/videos listed below so we can review the next step.
Incomplete Bike Information
If the app displays incomplete bike information:
retry the setup process
ensure the QR code was scanned clearly
If the issue remains
Please contact our support team with the photos/videos listed below so we can review the next step.
When To Contact Support
Contact support if:
the bike will not pair
the QR code cannot be scanned
configuration cannot be completed
the app displays repeated error messages
the bike does not power on
the display does not power on
Bluetooth pairing fails repeatedly
there is visible damage
the bike has been exposed to water, crash, impact, transport damage, modification, or third-party repair
you are unsure how to complete a step safely
What To Send Support
Please send:
order number
Aventon model
photo/video of the issue
screenshots/photos of any error messages
photo of the QR code
photo of the display
confirmation of which parts were replaced
confirmation of whether the bike powers on
confirmation of whether the display turns on
confirmation of whether configuration completed successfully
photos of visible damage
steps already completed from this article
Important Safety Notes
Do not continue riding if setup or configuration cannot be completed.
Do not ride if there is visible damage, overheating, smoke, or a burning smell.
Do not open the battery, controller, ACU, ECU, display, or other sealed electrical components.
Do not force connectors or cables.
Do not work on wiring while the bike is powered on or connected to the charger.
Contact support if unsure.