When do I need to replace the accelerator (throttle lever) on my Xiaomi scooter?

Here are the main reasons why you may need to replace the accelerator (throttle lever) on your Xiaomi electric scooter:

1. Error 14 or Audible Signal (1 Long and 4 Short Beeps):

   Some Xiaomi scooter models (e.g. 1S, PRO, PRO2) show Error 14 on the dashboard when there is a problem with the accelerator sensor (Hall sensor). This sensor sends a signal to the controller when you turn the throttle knob. If the sensor is defective or malfunctioning, the scooter may display error 14 and the accelerator may not respond or may not work properly (e.g. jerking, not responding to turning).
   Other Xiaomi models (and some older models) may beep 1 long beep and 4 short beeps instead of error code 14. This also usually indicates a problem with the accelerator sensor.

2. Physical Damage: breakage, cracking, heavy wear and tear, loose components.

3. Accelerator Problems:

   Stalling: the accelerator stalls, spins hard or does not return to its original position.
   Non-responsive: The scooter does not respond to accelerator rotation (or responds weakly/intermittently).
   Freedom: the accelerator moves freely, it wobbles.

4. Preventive Replacement: after long use/high wear, after an accident/fall, or to upgrade to a more comfortable/quality accelerator.