Mine turned out to be a fuse after the seat jot jammed by a small flashlight. My wife just kept cranking on the switch until the fuse popped. I was lucky she did not ruin the motor or frame because it comes as one very expensive unit.
I believe for 2000 year it is fuse 33. It is at least worth a look.
I believe for 2000 year it is fuse 33. It is at least worth a look.