2014 Forester 2.5i
Turns out you are right. This time I saw it light up and beep & the message said low washer fluid. Then the reminder light stayed on. This isn't normal though, because it's been going through a lot of washer fluid lately and there's no obvious reason for it. Last time it was at the dealership I thought they forgot to fill it because soon it was empty again. I filled it a couple weeks ago and again it needs more. It's also not spraying correctly. Must be leaking.It shouldn't be yet but I guess I can check.
This time I hit the switch while the light was still on. It was the washer fluid again. I think I have a leak. It's gone empty a lot lately for no obvious reason."Information", I believe.
Usually, if you hit the Enter button on the MFD switch, it will pop up a message telling you what it means, like "Low wiper fluid" or "check engine" or similar. Usually, a message will pop up on the MFD when you start the car or the "event" occurs, and this is a way to recall it (since you may have been actually driving and not paying attention to their distracting display!).
The MFD switch is usually the middle button on the lower left of the steering wheel, or just the one on the dash - I think it is on the steering wheel on the 2014s, but may vary by trims.