Aventon Mid Drive – W07 High Temperature Battery Operation Protection TroubleshootingUpdated 3 days ago
This article explains how to troubleshoot the W07 High Temperature Battery Operation Protection error on Aventon mid drive eBikes.
Use this article if your bike:
shows a W07 error code
stops riding assistance unexpectedly
displays a high temperature battery warning
loses power after extended riding or climbing
becomes hot during riding or charging
If you are unsure about any step or anything looks unsafe, stop and contact support before continuing.
Before You Start
Please prepare the following before troubleshooting:
your order number
your Aventon model
a photo or video of the W07 error code
a photo or video showing the issue
when the issue first appeared
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 the issue started after riding, charging, transport, storage, water exposure, impact, crash, modification, or third-party repair
photos of any visible damage
Safety Warnings
Do not continue riding if the bike has a persistent error code.
Do not continue riding if there is visible damage, overheating, smoke, or a burning smell.
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 about any step.
What This Error Means
The W07 error means the bike has detected high temperature battery operation protection.
This can happen if:
the ambient temperature is too high
the battery may be damaged
the eBike has been overloaded for an extended period of time
Possible Causes
Possible causes include:
high ambient temperature
battery warning or battery fault
prolonged heavy load on the eBike
Troubleshooting Steps
Step 1 – Stop Riding and Allow the Battery to Cool
Stop riding the bike.
If your battery is externally removable, remove the battery from the bike.
Place the battery in an environment between:
-20°C to 45°C
Leave the battery for approximately 2 hours before restarting the bike.
After waiting, reinstall the battery if removed and power the bike back on.
If the W07 error code clears:
continue to Step 2 to help prevent the issue from returning
If the W07 error code remains visible after the battery has cooled:
continue to Step 3
If the issue clears
The battery protection system was likely responding to high operating temperature or prolonged load.
Continue monitoring the bike during normal use.
If the issue remains
Continue to Step 3.
Step 2 – Reduce Heavy Load on the eBike
Check whether the bike has recently been used under heavy load conditions, including:
prolonged hill climbing
extended high-speed riding
carrying heavy loads for long periods
To help reduce battery temperature during riding:
reduce riding speed
pedal while climbing hills
take short breaks during prolonged climbs
keep the bike within recommended load capacities
If the bike was being heavily loaded:
follow the preventative measures above
continue monitoring the bike during normal riding
If the issue occurred during normal riding conditions:
continue to Step 3
If the issue clears
The battery protection system may have activated due to prolonged load or heat buildup during riding.
Continue monitoring the bike.
If the issue remains
Continue to Step 3.
Step 3 – Check Whether the Error Persists
Turn the bike off completely.
Wait approximately 30 seconds.
Turn the bike back on and check whether the W07 error is still displayed.
If the error code remains after restarting:
stop using the bike
please contact our support team with the photos and videos listed below so we can review the next step
If the error code no longer appears:
monitor the bike during normal riding and charging
if the error returns repeatedly, contact support
If the issue clears
The battery protection system may have temporarily activated due to heat or prolonged riding load.
Continue monitoring the bike.
If the issue remains
Please contact support.
When To Contact Support
Please contact support if:
the W07 error remains after completing the steps above
the battery does not charge
the bike does not power on
the display does not turn on
the motor does not engage
there is visible damage
the issue started after water exposure, transport damage, impact, crash, modification, or third-party repair
you are unsure how to safely complete any step
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 the following:
your order number
your Aventon model
a photo or video of the W07 error code
a photo of the display
a photo of the battery area
a photo of the charger and charger light, if relevant
photos of any 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 the issue started after storage, transport, water exposure, impact, crash, modification, or third-party repair
confirmation of which troubleshooting steps you have already completed
Important Safety Notes
Do not continue riding if the W07 error remains.
Do not ride the bike if there is visible damage, overheating, smoke, a burning smell, or water exposure.
Do not open the battery, controller, or sealed electrical components.
Do not force connectors or electrical components.
Do not work on wiring while the bike is powered on or connected to the charger.
Contact support if you are unsure about any step.