2017 outback all lights flash

My problems started the day after they  
did the recall for the “miles to empty
recall.” I was told gas cap, then loose
connection twice, then wheel sensor
three times, then computer, then
wiring harness. It’s currently at the
garage, and while the dealership has
been great about it, I have little faith
after a dozen times.  I have
experienced transmission issues, can’t
get out of drive or reverse, odometer
at zero while traveling, etc... all related
to this same issue. I just want it fixed
so I can trade it without giving
someone else a headache.