1. Battery Not Charging / Charging Slowly

Possible Causes:

• Loose charger connection or faulty charger

• Battery BMS (Battery Management System) protection triggered

• Ambient temperature too low/high

Solutions:

• Double-check that the charger is securely connected and LED light is on

• Try another compatible charger if available

• Let battery rest at room temperature (15–25°C) for 1–2 hours and try again

• If issue persists, contact us for a battery diagnostic or replacement

2. E-bike Won’t Power On

Possible Causes:

• Battery not properly connected

• Main fuse or controller malfunction

• Display unit failure

Solutions:

• Check battery installation and connectors

• Open battery box to inspect fuse (if accessible)

• Reset the system by turning it off for 5 minutes

• If the display remains black, contact after-sales support with photos/videos

3. Motor Not Responding / Weak Power

Possible Causes:

• Loose motor cable or water ingress

• Controller or PAS (Pedal Assist Sensor) fault

• Overheating from long hill climbing

Solutions:

• Disconnect and reconnect the motor cable (check for bent pins)

• Let the motor cool for 10 minutes

• Ensure PAS magnets are clean and aligned

• Provide motor error code (if available on display) for further support

4. Strange Noises from the Motor or Crankset

Possible Causes:

• Loose bolts or bearings

• Foreign object stuck in drivetrain

• Internal gear or motor wear

Solutions:

• Tighten crank and motor mounting bolts

• Inspect drivetrain and clean debris

• Lubricate moving parts if necessary

• If noise persists, send video to technical team for assessment

5. Display Error Codes (E01, E07, etc.)

Possible Causes:

• System communication error

• Sensor, brake cut-off, or throttle issue

Solutions:

• Refer to user manual for specific code meaning

• Disconnect and reconnect cables (especially brakes, throttle, sensors)

• Contact us with error code and bike serial number for diagnosis

6. Brake Not Working Properly

Possible Causes:

• Brake cable loose or worn

• Hydraulic fluid leak (if applicable)

• Brake disc misalignment

Solutions:

• Adjust or replace brake cable/pads

• Check for oil leaks around the caliper (hydraulic systems)

• Realign brake disc or replace if warped

7. Loose Parts or Frame Issues

Solutions:

• Regularly inspect bolts and nuts — especially stem, handlebar, pedals, and rear rack

• Apply thread locker where necessary

• Contact us immediately for any welding cracks or structural concerns — warranty may apply

8. Software or Firmware Update Needed

Solution:

• Contact our tech team for the latest firmware (if supported by your model)

• We will guide you through the update process via USB or Bluetooth (app-based)

Need Further Help?

Please provide the following info for faster service:

• Product Model & Serial Number

• Purchase Date & Country

• Problem Description

• Photos/Videos (if applicable)

Email: support@e-bike-x.com
We offer full technical support, spare parts, and remote guidance — for both end users and dealers.