Nope.
As far as I can tell, the gear box is permanently lubricated. There is no maintenance schedule for the gear box lubrication in the manual.
Remember, like virtually all EVs, the FFE has only a fixed step-down gear box, which operates nothing like an automatic transmission. It does not "wear down" the lubrication like an automatic transmission does.
The motor and gearing of the FFE will probably outlast the body of the car, and probably nearly any other component on the vehicle.
