My guess is that you had Android Auto connected to your truck and were getting your Nav through that. Would explain the voice change and why it doesn't understand you. Google is superior to the Ford Sync stuff.
But DISCLAIMER: I don't use Android Auto. Maybe someone else here can give definitive answers.
You could study up and see how to get Android Auto to work on your truck and see if gets you back to what you want.
But DISCLAIMER: I don't use Android Auto. Maybe someone else here can give definitive answers.
You could study up and see how to get Android Auto to work on your truck and see if gets you back to what you want.