WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of CHRYSLER GROUP, LLC
Remove the pivot bolts (2) and separate the armrest (1) from the tray (3).
Courtesy of CHRYSLER GROUP, LLC
Using trim stick (special tool #C-4755, Trim Stick) or equivalent, disengage the clips (1) and remove the cup holder (2).
Courtesy of CHRYSLER GROUP, LLC
Unzip the cover (1) and separate the foam and cover (2) from the armrest frame.