I am trying to narrow the problem down, today while no sound can be heard in the car I tried to use the phone itself but also nothing can be heard theough the hand set, but the other party is hearing me. when I switched the bluetooth off, the handset was working well.

I think I am in the privcey mode when using the bluetooth and I do not know how to switch it off.

what about the radion head unite connection, or a blown phone speaker fuse inside the car.