Thanks so much for the info. I went and pulled #8 out and sure enough it was blown. I went down to Autozone and picked up a pack of 7.5 a fuses and it works like a champ. I was fixing to spend $200In my 2004 c230K I had the same problem with the key, I changed fuse #8 located in the trunk and the remote started working again.
on another key. Thank goodness I asked a simple question before I did that.
What do you think would cause that fuse to blow?