Maybe a dead thread but I was able to get a year or two more out of my 2017 driver side by lubing and cleaning. However recently that didn't seem enough, so I pulled the trigger with a $200 amazon motor/hinge replacement. (First tried motor only, but it was rusted a seized up so went with the whole assembly). I've replaced it and it worked a few times and now its back to "extending" but not retracting, moves about a half inch then stops. So Frustrating, Anyone else have suggestions on how to Triage? I cant find any material on sensors/adjustments/thresholds. Going to see if maybe I didnt tightened some bolts some where and its out of alignment but looks fine.