Thrasher5621

Hello all,
I recently purchased a 2008 SLK350 with a few issues. One of them is the hardtop won't retract.
The error I am getting on the instrument panel is the car has to be at a "stand still."
It is on the lift with the tires off! Not sure how much more of a "stand still" I can get too.
I am assuming there is a sensor somewhere that is malfunctioning. I have downloaded a repair manual on line... but, not finding much on the top.
Hoping someone can help
Thanks
Mark