I Have An S320 W220,the Seats ,mirrors,windows And Aircon Dont Work (the Aircon Maybe A Separate Issue) All The Fuses Are Ok And After Scanning Wih Various Scan Tools Without Any Result I Could Do With Some Guideance In The Right Direction

Retset the fuses with a test lamp on each side ..they can fool you b/c they look good but are not making a connection on the ends in the holder.................I alway just give them a twist/spin in the holder

best way is to have your car diagnos with a STAR diagnosis, its the only equiptment that can give you indepth fault reading.