Is your unit the one with the large single slide on the driver's side; i.e., 3050S? If so, we had the same problem with ours just last month. Yes, you can push the slide in while someone presses the in switch. If yours is the large slide, there are two motors, upper left in the front and upper right in the rear. You may have a burned out motor. Again, if it is the 3050S, the module is located beneath the stove. Remove the little panel near the floor and you'll see it.
2014 Forester 3051S
2013 Ford Focus