Check the Battery
- Ensure the battery is fully charged. A low battery might not have enough power to engage the motor assist. Check the battery level indicator on your Brompton.
- Verify that the battery is properly seated and securely connected. Remove the battery and reattach it to ensure a good connection.
Inspect the Wiring and Connections
- Check all the cables and connectors leading to the motor and battery. Look for any signs of damage, loose connections, or corrosion.
- Gently wiggle connectors to see if this affects the motor. If it does, it might indicate a loose connection that needs tightening or cleaning.
Test the Sensors
- The pedal assist system relies on sensors to detect your pedaling. Make sure the sensor is aligned correctly and hasn't been knocked out of position.
- Clean the sensor and any magnets involved to ensure that dirt or debris isn’t interfering with their operation.
Review the Settings
- Double-check the settings on your display unit. Make sure that the assist mode is turned on and set to the desired level of assistance.
- Reset the system by turning the bike off, waiting a few seconds, and then turning it back on again to reset any software glitches.
Examine the Motor
- Listen for unusual sounds when trying to engage the motor. Grinding or clicking noises could indicate a mechanical problem.
- If possible, visually inspect the motor for signs of wear or damage.
Perform a System Diagnostics
- Some Brompton motor systems come with diagnostic tools or apps that can identify issues. Follow the manual or app instructions to perform a check.
- Note any error codes and consult the user manual or manufacturer’s website for what they mean and how to address them.
Seek Professional Help
- If you've tried all the above steps and the motor assist still doesn't engage, consider taking your bike to a professional technician.
- A professional will have the tools and experience to diagnose and fix issues that might not be apparent to the untrained eye.
