Radio won't work in 2015 Forrester after battery died and was recharged.

Check the fuses. You may have to input the radio code to unlock it.

Same thing happened to me. Disconnected the negative terminal. Reconnected it and started car. The radio was fine! Weird right!?

thank you.... I did same; undo neg. batt. term. rehook; start car and it was fine

Worked for me, too. 2015 forester

I had to disconnect both negative and positive wait a while then ir worked

Confirming Guru9's answer, that's what worked for me just now.

Did the trick for me, quite a relief.

WoW! Worked great for me! Who'd da thunk!! Thanks