I own a '99 C43, purchased used from a Mercedes dealer with the windows already tinted. The AM radio reception has always been very poor. When I first complained several months ago, they told me that an antenna was disconnected and that they had fixed the problem. However, the reception wasn't much better after that.

When I finally brought the car back a few days ago, the tech told me that the window tinting on the rear window was causing the problem (they had never mentioned this before). Apparently, the radio antenna is integrated into the rear window itself, and the tint interferes with reception.

Is this the case? I find it hard to believe that a thin piece of transparent plastic would do this. But even if this is accurate, there must be a way to get around the problem without removing the tinting. After all, AM radio is a pretty low-tech automotive function...

Any thoughts would be greatly appreciated.