How do you take off the door panel on the passenger side rear door, i think the motor that rolls down the window might've went cause it doesnt roll all the way down,...just barely. Is it the type that clips on or screws on?
One behind the handle, one at the bottom of the door pull, 3 across the botom of the panel; grip the lower edge, pull firmly but gently towards you until the plastic retainers release, then carefully lift upwards to clear the upper frame; hold the panel in one hand while reaching down between it and the door to release the door latch release bar and unplug the window switch.
You can pop the switch out to reinstall it to run the glass up and down for repair.
Try a liberal dose of WD 40 on the roller mechanism first, due to general lack of use, it gums up.