The Harmon Kardan radio in my 2014 Forester has lost its Bluetooth capability. Everything else works fine just cannot make any Bluetooth connections. Not my phone, friend's phones, etc. Dealer advised disconnecting battery to cause system to lose all settings and Bluetooth would come back when re-connected but this doesn't work even after an overnight disconnect. Radio retains all settings. Has anyone else had this problem and if so was it fixable?