Fixing the controller in an electric scooter takes some troubleshooting and inspecting. First, make sure that all connections are fully seated and functioning properly, the battery is fully charged, and the scooter is powered on when testing different components. Inspect the entire body, especially any exposed electrical components, for damage, fraying or wear. If the scooter does not respond when you pull on the throttle and the LCD does not display any error messages.

Electric scooters have square wave controllers or sine wave controllers, which results in different acceleration patterns. In very basic terms, square wave controllers apply power in pushes or an on/off motion, like flipping a lightswitch. Sine wave controllers apply power in a more continuous, smooth motion, resulting in a smoother acceleration pattern, like a light dimmer dial. Most electric scooters have square wave controllers but sine waves are being used by more scooter manufacturers.