If neither rear control is working, then the wire connector to the tourpak is likely pinched, disconnected, or one of the prongs is pulled-out. You say you have reconnected the main plug at the tourpak, so it may be where it plugs into the control panel on the side. I don't believe there is a fuse for that line, but that could be a variant cause as well. If the volume control works, but the Mode Up/Down control doesn't, then the rear controls feature has not been enabled in the Infortainment system (Main Menu/Setup/Rear Controls).
Some folks seek the comfort of the straight and narrow. Me? I prefer the twisted road.
Last edited by RoadTrip; 04-15-2017 at 02:47 PM.