Galaxy S4 Active problem

I got my Galaxy S4 Active paired with no problem. Phone shows connected while in car. Phone rings over stereo speakers like it should, but when the call is answered, the phone switches from headset to phone and does not connect call thru the BT. I can hit the headset button on the phone after the call is answered and it will connect to BT. Is anyone else having this issue.

FYI... I tried using the search function for the forum but it is not working correctly right now.