Hi, I purchased a 54 c class new shape with integrated phone and the cradle that came with it was not working so i though it might be faulty. I yesterday purchased a bluetooth cradle off a friend and connected it. I followed the instructions and put the instrument display cluster on the phone menu and it says no phone. I pressed the mercedes logo button on the cradle and the lights flash but the display does not change to anything and it does not detect my nokia 8800. There is obviously power going to the cradle as the lights are working on the unit so what could be the problem. Any help would be much appreciated.