Got a reply from Mazda. They said to factory reset the Walkmans. I did and it made no difference. However I then thought to factory reset the Mazda. I did and I managed to get the older Walkman running Bluetooth 3.0 to pair. However the newer Walkman running Bluetooth 4.2 still won’t pair with error message Could Not Connect.I have two Sony Walkmans. They won’t pair at all. They see the Mazda but when I select it the error comes back Could Not Connect. Happens every time on both Walkmans.