thanks for your answer.
I have no phone connected. i send the BT-Signal to an BT-receiver. this is connected with my HIFI-station. Dont know if this receiver have something to do with handsfree capability.
Now i tried something different. today i started as first LE/Kodi. after this i started my BT-device. Now it connected automatically 
But if the BT device is running already i have to connect manually. this is weird but now i know how to do 
thanks again.