Aventon Bikes with ACU-ECU (Aventon Control Unit) – E179 Security Verification Failure TroubleshootingUpdated 2 days ago
This article explains how to troubleshoot the E179 “Security Verification Failure” error on Aventon bikes equipped with the ACU-ECU (Aventon Control Unit).
Use this article if your bike:
- Shows error code E179
- Displays “Security Verification Failure”
- Disables PAS unexpectedly
- Produces an audible alarm
- Has been reported as lost in the Aventon app
If you are unsure about any step or notice anything unsafe, stop troubleshooting and contact support.
Before You Start
Please prepare the following:
- order number
- Aventon model
- photo or video of the issue
- photo of the E179 error code
- when the issue first appeared
- whether the bike powers on
- whether the battery charges
- whether the display turns on
- whether the motor engages
- whether the issue happened after charging, riding, transport, storage, water exposure, crash, impact, modification, or third-party repair
- photos of any visible damage
Safety Warnings
- Do not continue riding if the bike has visible damage, overheating, smoke, burning smell, water exposure, motor resistance, or a persistent error code.
- 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.
What This Error Means
E179 indicates the bike has been reported as lost within the Aventon app.
When the bike is reported as lost, the bike may:
- display the E179 error code
- disable PAS
- produce an audible alarm
Possible Causes
- the bike was reported as lost through the Aventon app
- bug in the current ECU software version
Troubleshooting Steps
Step 1 – Check Whether the Bike Was Reported as Lost
Check whether the bike has been reported as lost in the Aventon app.
If yes
Connect the bike to the Aventon app.
After connecting the bike, cancel the bike loss report within the app.
Restart the bike and check whether the E179 code remains.
If no
Update the ECU software to the latest version using the Aventon app.
After the update completes, restart the bike and check whether the E179 code remains.
If the issue clears
The issue was likely caused by the bike loss report feature being activated.
If the issue remains
Update the ECU software to the latest version using the Aventon app.
Step 2 – Update the ECU Software
Update the ECU software to the latest version using the Aventon app.
After the update completes, restart the bike and check whether the E179 code remains.
If the issue clears
The issue was likely caused by an ECU software bug.
If the issue remains
Please contact support for further diagnosis.
When To Contact Support
Please contact support if:
- the E179 error remains after completing the steps above
- there is visible damage
- the bike does not power on
- the display does not power on
- the motor does not engage
- the issue appears related to the ECU, app communication, or security verification features
- the bike has been exposed to water, crash, impact, transport damage, modification, or third-party repair
- you are unsure how to safely complete a step
- you need warranty, repair, replacement part, refund, or replacement support
If the issue remains after this step, please contact our support team and include the photos/videos listed below.
What To Send Support
Please send:
- order number
- Aventon model
- photo or video of the E179 error code
- photo of the display
- photo of the battery area
- screenshot of the bike loss or security verification settings in the Aventon app, if available
- photos of visible damage
- confirmation of whether the bike powers on
- confirmation of whether the battery charges
- confirmation of whether the display turns on
- confirmation of whether the motor engages
- confirmation of whether there was water exposure, crash, impact, modification, or third-party repair
- list of troubleshooting steps already completed
Important Safety Notes
- Do not continue riding if the E179 error remains.
- Do not ride if there is visible damage, overheating, smoke, burning smell, water exposure, or motor resistance.
- Do not open the battery, controller, ECU, or sealed electrical components.
- Do not force connectors.
- Do not work on wiring while the bike is powered on or connected to the charger.
- Contact support if you are unsure.