Hi We have 2 Nokia 6310 and Cark 91 in our VW Passat. It has worked just fine. Now we have got a problem with the sound through the car speakers. Sometimes ther seems to be no connection with the car speakers. wi cant make a call or recive one. The car radio shows "PHONE" but there is no sound. Perhaps ther is some help to get here. I do not know where to start to look. Regards dodo