Weird elec problem

[navyflyer]

Hello,
Here’s a head scratcher. Came home from airport to dead battery. Replaced it. 3YO. I noticed that when I shut car off and remove key fob, interior lights keep flickering, DRL remains illuminated. Car locks fine, but DRLs stay illuminated and won’t shut off. Jump back in, car turns over but is rough when it does. Disconnected battery, figured I’d reset things. Worked fine for a week or two, but symptoms come back intermittently. (Think that’s how I killed my battery, DRLs stayed on after I walked away.)

It appears that a relay of some kind is staying energized or sticking. 2013 X50i.

Any ideas?