Diagnosis
The triple beep is a throttle fault code. The scooter's control system detects the throttle is not in its neutral position at startup.
How to Fix It
First, ensure the scooter is on a level surface. Power it on. Before pressing the throttle, manually pull the throttle lever back towards you to its full resting position. You should feel a click. Hold it there for two seconds, then release. The fault should clear.
If That Didn't Work
The throttle hall sensor or its cable may be damaged. Inspect the throttle cable where it enters the handlebar for pinches or cuts. The issue requires a throttle assembly replacement.
Heads Up
Do not attempt to open the throttle mechanism. The magnetic sensor inside is delicate and not user-serviceable.