This article explains how to troubleshoot the W08 Motor Lock Protection warning on an Aventon eBike.

Use this article if your bike:

• Shows a W08 warning code
• The rear wheel does not rotate freely
• Motor assistance stops unexpectedly
• The bike feels like the motor or rear wheel is locked or restricted

If you are unsure of your Aventon model, please confirm your model before continuing.

Stop troubleshooting immediately if anything looks unsafe, damaged, overheated, or smells burnt.

Before You Start

Please prepare the following:

• Order number
• Aventon model
• Photo or video of the W08 warning code
• Photo of the rear wheel and motor area
• Photo of accessible motor cables and connectors
• When the issue first appeared
• Whether the bike powers on
• Whether the display turns on
• Whether the motor engages
• Whether the rear wheel rotates freely
• Whether the issue happened after transport, storage, water exposure, crash, impact, overload, modification, or third-party repair
• Photos of visible damage

Safety Warnings

• Do not continue riding if the rear wheel does not rotate freely.
• Do not continue riding if there is motor resistance, 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.

What This Warning Means

The W08 Motor Lock Protection warning means the bike has detected resistance or obstruction affecting normal motor or wheel operation.

The system may reduce or stop power output to help prevent damage.

Possible Causes

Possible causes include:

• Ambient temperature is too high
• Damaged battery
• The eBike has been overloaded for an extended period of time
• Rear wheel obstruction
• Interference with the wheel, tire, spokes, hub, or brake
• Damaged motor
• Damaged controller

Troubleshooting Steps

Step 1 – Inspect the Rear Wheel for Obstructions

Turn the bike off before continuing.

Inspect the rear wheel for anything preventing the wheel from rotating freely.

Check the:

• Tire
• Spokes
• Hub
• Brake area

Look for:

• Debris
• Obstructions
• Interference
• Damage preventing normal wheel movement

Clear any visible obstruction if safe to do so.

Restart the bike and check whether the W08 warning remains.

If yes – The W08 warning still appears

Continue to Step 2.

If no – The warning clears

The issue was likely caused by temporary wheel or motor obstruction.

Monitor the bike during normal riding.

If the issue clears

Continue normal use and monitor the bike.

If the issue remains

Continue to Step 2.

Step 2 – Check Whether the Warning Persists

After removing any visible obstruction and restarting the bike, check whether:

• The rear wheel rotates freely
• The motor engages normally
• The W08 warning returns

If yes – The W08 warning still appears

The issue may involve the motor or controller system.

Please contact our support team with the photos/videos listed below so we can review the next step.

If no – The warning no longer appears

The issue was likely caused by temporary obstruction or overload conditions.

Continue monitoring the bike during use.

Step 3 – Inspect for Visible Motor or Wheel Damage

Inspect the accessible:

• Motor area
• Rear wheel
• Tire
• Spokes
• Brake area

Check for:

• Visible damage
• Impact damage
• Bent components
• Burning smell
• Signs of overheating
• Water exposure

If yes – Visible damage is found

Stop using the bike immediately.

Do not continue riding the bike.

Please contact our support team with photos/videos of the affected area.

If no – No visible damage is found

Restart the bike and check whether the W08 warning returns.

If the issue remains

The motor or controller system may require further inspection.

Please contact support.

Step 4 – Check Riding and Load Conditions

Check whether the issue happened:

• During steep climbing
• During prolonged heavy riding
• While carrying heavy loads
• During hot weather conditions

If yes

To help prevent overload conditions:

• Reduce riding load where possible
• Reduce speed during climbs
• Take short breaks during prolonged heavy riding
• Ensure the bike remains within recommended load limits

If no

The motor or controller system may require further inspection.

Please contact support.

If the issue remains

Please contact support.

When To Contact Support

Please contact support if:

• The W08 warning remains after completing these checks
• The rear wheel does not rotate freely
• The motor does not engage
• There is visible damage to the wheel, motor, or brake area
• The bike has been exposed to water, crash, impact, transport damage, overload, modification, or third-party repair
• You are unsure how to safely complete a step

If the issue remains after these steps, please contact our support team and include the photos/videos listed below.

What To Send Support

Please send:

• Order number
• Aventon model
• Photo/video of the W08 warning code
• Photo/video of the rear wheel and motor area
• Photo of accessible connectors and wiring, if safe
• Photos of visible damage
• Confirmation of whether the bike powers on
• Confirmation of whether the display turns on
• Confirmation of whether the motor engages
• Confirmation of whether the rear wheel rotates freely
• Confirmation of whether the issue happened during heavy riding, climbing, overload, or hot weather
• Confirmation of whether the issue happened after water exposure, crash, impact, modification, or third-party repair
• Confirmation of the troubleshooting steps already completed

Important Safety Notes

• Do not continue riding if the W08 warning remains.
• Do not ride the bike if the rear wheel is restricted, the motor is resisting movement, or there is visible damage.
• Do not open the motor, controller, battery, 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.