Buddee

Help needed. Have just bought a 2013 high top connect(old shape) got a ford 6000 cd that operates fine. My phone connects to Bluetooth ok. Pin came up on radio display and input to phone and says it is connected. But when I make a telephone call the music just continues and there is silence from my phone. If I put it onto speaker phone you can hear the call. I’m guessing the Bluetooth module may be faulty. Does any one know where it is located thanks ?