I'm having this issue with my 2017 MKC! Leased in December 2016, has 7,400 miles on it. Left a friend's house on Friday night and took 2 attempts to start, thought it was weird but figured it was just a fluke. Came out Saturday morning to a totally dead battery. My boyfriend and I jumped the battery and drove it for a while running errands without issue. We also made sure to unplug my phone chargers and that there was nothing else on or plugged in that could be draining the battery.
On Saturday night my Lincoln Way app told me the battery level was low, so I went to check it out and had the "System Off to Save Battery" message on the display. The engine wouldn't start. We jumped it again and left it running for a bit to charge the battery. It was dead again Sunday morning (no error message from the app, though).
I took it to the dealer on Monday and they still have it. They have been really unresponsive, actually. I called this morning because I hadn't heard from them at all since Tuesday morning (it's now Thursday). They are still testing it to try to figure out where the drain on the battery is.
This is so frustrating. I've read that people have had to disable the welcome lights...which I personally really like and feel are a feature I pay for, so why should I have to turn them off?
Does anyone know if there is an actual solution for this? The guy at the dealer who checked me in told me that they had an MKC in last month with the same issue and they could never figure it out and Ford ended up buying the car back. WTF?