An inoperative power window would commonly be caused by failure of the cable in the window regulator, or the window motor itself. The window regulator will need to be replaced as an assembly to correct this concern.
Car Problem Reports
Dodge Magnum Cable Failure in Window Regulator/Motor May Cause Power Window to Become Inoperative
Dodge Magnum Problem
Average Mileage: 42,637 mi (15,000 mi - 67,550 mi)
rear window will not operate when it is warm (50+ degrees) But, all winter it operates properly
Visitor, 2007 Dodge Magnum, 38,000 mi
my passenger window isnt responding!!!
Visitor, 2006 Dodge Magnum
it started doing that the year after we bought it.
Visitor, 2007 Dodge Magnum, 67,550 mi
REAR WINDOW MOTOR WEAK