1. Insert the key into the round hole under the rear cushion (this method is in the
absence of battery or battery damage when the whole bike cannot be energized,
and needs emergency treatment. Under normal circumstances, you only need to
open the switch lock to energize the whole bike, press the cushion switch on the
handlebar, you can open the cushion), open the front cushion, check the air switch
to ensure that it is in the off state.