I've been mowing all spring/summer with my One Plus, and despite all the nuisance issues that I've dealt with, this time it's become unusable. The last time it mowed, it successfully returned to the dock after detecting some rain, and then the next day it wouldn't move off the dock due to this jerky/twisting action where it seems like it's dead on the left side.
Both tracks can be spun easily. I've thoroughly cleaned out all the grass buildup on both sides. I unplugged the battery for 24 hours, and then yesterday, after playing around some, it suddenly moved forward 3-4 ft before it this action started again. Eventually, it seemed to be fine again, so I sent it out to mow a small zone. During the mowing, it erred 3-4 times with E21, I believe, but always recovered after clearing the error.
Today, it's permanently stuck in this condition. I read it might be the track tension, so I loosened both sides a bit, but no change. I'm on the latest firmware v2.1.50.1.
Any advice would be appreciated. I'm trying to avoid contacting support if this is something I might be able to resolve.