I've had my 2014 Legacy 2.5i Limited for a month now, and last night when I turned on my car, all of my AM-FM presets were gone--but my XM presets were still intact. I then resaved all of FM1 presets, drove for more than a hour, shut off the car, restarted it 20 minutes later, and those presets were gone again (with XM still intact). (It's the 440w, 9-speaker Harman Kardon.)
Also, when I push and hold the preset up-down switch on the steering wheel, it's not making its usual "beep" sound, but the radio does seem to jump to the next strongest station, so I'm not sure if that's related.
It's been in the single digits here for a few days, so I'm not sure if that's been affecting my battery, or if it's possible to have a loose wire connection that would only affect the AM-FM radio and not the satellite radio. I'll be taking it to the dealer, but I was wondering if anyone had any ideas about what's happening.