I have this steps that might help you with beeping sound on your Scooter. Hope it helps.
UNIT LIGHTS UP/HORN WORKS BUT UNIT WILL NOT MOVE
- This often occurs when the scooter is in free wheel mode and is not in drive mode. Re-Engage the free wheel lever which is located down near the rear wheels (normally a yellow or red lever).
- If you hear a beeping noise, the beeping you hear is a fault beep indicating the scooter main control box has detected a problem. Contact your dealer who can diagnose the beep code.
- Check batteries with load tester - If either battery drops more than 1 volt under a load, the battery(s) are bad. Replace "both" batteries.
I also find these additional steps on how to know beep alarm indicators:
This main control box has a self-diagnostics feature & cannot be tested with a volt meter. When a
problem is present the main control box will diagnose the fault, prohibit the scooter from being driven
and sound an alert beep. Each alert beep indicates a different issue which helps to determining the
problem by narrowing the fault into one of a few main areas of the scooter. Reference this information
below for the alert beep indications.
Very Rapid beep- Batteries are low. Charge & test batteries.
Medium Fast beep- Motor/brake wiring fault. Free wheel lever disengaged.
Solid beep- The charger is plugged into the scooter (some models may vary).
Very Slow beep- The throttle pot was not at center when you turned the unit on. Throttle pot off
center or wiring (yellow & orange wires) fault.