2014 Legacy 2.5, 33.5k miles.
Started heading to town, within a half mile, the brake light started blinking, then I noticed that the cruise icon was also blinking, the traction control icon was on steady and the check engine was on steady. I returned home. I pulled the code this morning and it was a P1449, air filter clog.
Air filter changed at 30k, I checked it, it was clean. I pulled the snorkel and it was clear. I read the owners manual and it said a blinking brake light was something wrong with the electronic parking brake, but it appears to be working, setting and releasing as it should.
I called the dealer to schedule it for repair, next Friday is the earliest. I asked about driving it and they told me that the blinking brake light is just to get your attention for when the check engine light comes on. It got my attention all right, but I have never heard of this before and it is not in the owners manual. Do you think this is true? Sounds bogus to me, but Subaru does seem to march to a different drummer.