Yeah, we have an Outback as well (2017) and it, too, left us "stranded" (it was parked at home but failed when we really needed it) due to probably the same thing ? Ours drained the battery dead both times. We brought it in both times and had them look it over, both times they blamed us, saying we left a light on (we didn't). Then my wife remembered a recall notice concerning the electrical system, and suddenly they were able to fix the issue. Really put a dent in my trust with them.
Great car otherwise. Well, the CVT isn't the best for driving. But the AWD and agility and snow handling is fantastic.