window problem, the auto doesn't always work
 

After having my Z since Sept. Last week I just found out that you can roll down your windows w/ your key chain, w/ that being said, I did it a few times. Once I was in the car driving, I tried to use my "auto" window to roll them back up, and it would roll almost to the top, but then roll back down to the middle. It does this at random times. Has anyone else had this problem???? If so, what did you do to correct it???? Thanks for the help