I learned when I bought my car that it already had the bluetooth kit installed for my 03 M5. I have a Motoroal 551 bluetooth capable phone. Intially it worked fine with the voice activation software. I purchased a BMW adaptor and have been receiving weak signal messages and call fail messages while the adaptor is installed in the middle console. The adaptor does seem to work with the phone as the phone signs on with bluetooth when I start the car. Afterwards when I try to use the phone the messages occur. Additionally the reception is poor and breaksup with the adaptor. Any idea what's wrong?