250 Window Dropping When Winding uP

Hi all,

I’m having some issues with my passenger side window. Whenever I wind it up it clicks and drops a few mm. once I had it fail on me completely and drop all the way down (but it was still controlled??). No issues when it goes down, only does it when going up.

Has anyone had this issue before and got any tips/advice? Or is it looking like a new mechanism?

 

Going to have a look at the weekend, need to replace the check strap so I'll be removing it anyway. Read something on here about holding the 'wind up' button for 30 seconds to reset it. Not sure how that would work though.