The motor controller is the brain of your electric bike, responsible for managing power flow between the battery and the motor. If your hub drive motor controller is malfunctioning or you’re upgrading to a new one, replacing it is a manageable task with the right steps. This guide will walk you through how to replace the hub drive motor controller on your electric bike, ensuring a smooth, efficient process.

This video was filmed using the Favorite Hybrid. While the Hybrid Pro or CSC controllers may look slightly different, the steps are generally the same. However, the connectors on the controllers may vary. When removing your old controller, it's a good idea to take a photo of the setup to ensure that you connect everything correctly when installing the new controller. Although the connectors are distinct and designed to prevent mistakes, I still recommend taking a picture for reference.

Tools and Materials You'll Need:

• New  motor controller compatible with your e-bike
• Screwdriver set (Phillips and flathead)
• Zip ties
• Gloves (optional for protection)

Step 1: Power Off and Remove the Battery

Before working on your e-bike, make sure to power it off completely and remove the battery to avoid any electrical hazards.

• Turn off the power: Use the display or power button to turn off the bike.
• Disconnect the battery: Depending on your e-bike model, you might need to unlock and slide out the battery or unplug it from its connectors. Store it safely away from your work area.

Step 2: Locate the Motor Controller

The motor controller is inside the frame's downtube.

• Remove the controller cover: Use a screwdriver to remove the cover or panel protecting the controller. There are three screws that hold the cover.

Step 3: Disconnect the Wires

The controller will have several wires connected to it, including:

Hybrid CSC:

Hybrid :

Hybrid Pro:

Label the wires: Before disconnecting anything, take pictures or label the wires to remember where each one connects. This will make it much easier to connect everything correctly to your new controller.

• Unplug each connector carefully or cut and strip any wires that are soldered or permanently attached. If you cut wires, leave enough length to reconnect later.

Step 4: Remove the Old Controller

Once the wires are disconnected, remove the old motor controller 

Step 6: Install the New Controller and Reconnect the Wires

Now, reconnect the wires to the new controller. Be sure to push each connector in fully, ensuring a secure connection. This step is especially important for the eBus cable on the Hybrid CSC model. Double-check that all connectors are properly inserted and pushed all the way to the end to avoid any issues.

Step 7: Test the Connections

Before securing everything, it’s important to test the new controller.

• Reconnect the battery to the e-bike.
• Turn on the bike: Check that the display powers on and that the motor responds when you engage the throttle or pedal assist.

If everything is functioning properly, power off the bike again to finalize the installation.

Step 8: Secure and Organize Wires

Now that you’ve confirmed everything works, it’s time to clean up the wiring.

• Use zip ties to bundle the wires neatly, keeping them out of the way of moving parts like the pedals, chain, or tires.
• Tuck the wires back into the frame or controller housing, and reattach the protective cover.

Step 10: Test Ride

With everything installed, take your e-bike for a test ride to ensure the new controller is functioning correctly.

• Check motor response: Make sure the motor engages smoothly with throttle and pedal assist.
• Monitor the display: Ensure the display shows correct speed, battery level, and other information.
• Test accessories: If your e-bike has lights, or other accessories connected to the controller, verify they are functioning properly.