got a new g4, it powers on but the motor doesn't engage when i kick off. just beeps.

Diagnosis

The Gotrax G4 is designed with a safety mechanism known as "Kick-Start" or "Non-Zero Start." This means the motor controller is programmed to ignore throttle inputs until the onboard sensors detect that the scooter has reached a minimum physical velocity—typically around 3 mph (5 km/h). If you attempt to engage the throttle from a complete standstill, the controller will trigger a safety lockout, resulting in the rhythmic beeping sounds you hear. This is not a mechanical failure, but a software safeguard to prevent the scooter from lunging forward unexpectedly. To confirm this is the issue, attempt a vigorous push-off with your foot. If the motor engages smoothly once you are gliding, the system is functioning as intended. However, if the beeping persists even while moving at a brisk walking pace, it indicates that the controller is not receiving the "speed threshold" signal from the motor hall sensors, or there is a conflict with the electronic braking system that is overriding the throttle.

How to Fix It

To resolve the beeping and ensure the motor engages correctly, follow these precise steps to calibrate the start-up sequence and verify the mode settings:

1. Ensure the scooter is on a flat, hard surface. Place the scooter on the ground; do not attempt this while the wheels are lifted in the air, as the controller may trigger an "over-speed" error.
2. Press the Power button once to turn the display on.
3. Perform a "Kick-Push": Push the scooter forward with your foot until you reach a speed of approximately 3 mph.
4. While in motion, gradually press the thumb throttle. The beeping should cease immediately as the motor takes over.
5. If you wish to toggle between different power modes (which can affect the responsiveness of the initial engagement), press the "Mode" button briefly. Cycle through the settings until you reach the highest power setting to ensure the motor has maximum torque for the initial transition from kick-push to electric drive.
6. If the scooter is still beeping, perform a hard reset: Power the unit off, hold the throttle and brake lever simultaneously for 10 seconds, then power the unit back on.

If That Didn't Work

• Inspect the Brake Lever Micro-Switch: The G4 features an electronic cutoff switch in the brake lever. If the lever is slightly bent or the spring is weak, the controller thinks you are braking, which kills the motor and triggers a beep. Use a small screwdriver to ensure the lever is fully returning to its neutral position. If you see a gap of less than 2mm between the switch contact and the lever, manually nudge the lever outward to release the switch.
• Check for Hall Sensor Connectivity: If the motor never engages regardless of speed, there may be a loose connection in the motor phase wires. Locate the main wiring harness leading from the deck into the front wheel. Ensure the green, yellow, and blue connectors are seated firmly. A single loose pin in the hall sensor connector will prevent the controller from knowing the scooter is moving, keeping it in "safe mode" indefinitely.
• Verify Battery Voltage Levels: If the battery is critically low (below 30V), the G4 may power the LED display but lack the current necessary to engage the motor, resulting in an "under-voltage" beep. Plug the charger into the wall and the scooter; if the motor engages while plugged in (test carefully), your battery pack has a dead cell or a faulty BMS.
• Inspect the Throttle Assembly: Debris or grit inside the thumb throttle housing can prevent the switch from reaching the full "open" position. Use a can of compressed air to blow out the throttle assembly. If the throttle is stuck in a slightly "active" position upon startup, the G4 will enter a safety lockout mode and beep to prevent unintended acceleration.

Heads Up

• Avoid "Dry-Testing": Never hold the front wheel off the ground and press the throttle. This can cause the motor to spin up to maximum RPM instantly, which may trip the over-current protection in the controller.
• Brake Calibration: Periodically check the tension of your brake cable. If the cable is too tight, it can trigger the electronic cutoff even when you aren't actively braking.
• Storage Tip: If storing the G4 for more than two weeks, keep the battery charged to approximately 60-70%. Storing it completely empty can lead to voltage drops that make the "kick-start" mechanism erratic.
• Water Warning: The beeping could be a sign of moisture in the deck controller. If the scooter was exposed to rain, do not power it on; let it dry for 48 hours to avoid shorting the hall sensor inputs.