Battery Indicator; Error Code Indication - Key-Disp KD21C User Manual

DOWN button, the interface shows "0" still and "0" flashing prompts low.
To change assistance level, press the UP/DOWN to increase or
decrease until the desired assistance level is displayed.

◆Battery Indicator

The five battery bars represent the capacity of the battery. When the
battery is in low voltage, battery frame will flash to notice that the battery
needs to be recharged immediately.

◆Error Code Indication

If there are errors about the electronic control system, the error code
will appear automatically.
The messages of the error code are in Attached list 1 .
Assistance Level "3"
Low Voltage Flash
Battery Indicator
5