So got a 09 isx50 and when I have the driver front window down and when I roll it back up
It rolls up then comes back down again once it reaches the top and when I roll it up again
And once it reaches the top it rolls back down again but when I play with the switch to roll it up like
When it reaches towards the top I push the button to stop it then keep switching it when it reaches to top then it works fine does anybody know what's causing this I had lexus replace the window motor like months ago cause it was doing the same thing.

 

I had a problem like that in my '12 RX-350. I looked in the manual how to trouble shoot the window by holding the switch for a few seconds,and it fixed the problem.