I have the same van and the eco mode does my head in , can't see how eco friendly it is when instead of just using the battery I then start the engine to have some lights and music on!
Transits were good for keeping things running , just had to watch it didn't flatten the battery.
Happened once in my old combo van. 3rd party radio sometimes didn't turn off as the key barrel was shot and sometimes didn't turn the ignition off even with the key out.