I have a 99 E320 with 54k. New battery. It does not start on the first attempt sometimes. I turn the key, no sounds, it acts like it has a dead battery. It does this may be every few weeks. Usually, when it does this I can get it to start on the second or third try. Couple of days ago it would not start at all. Had to call the road side assistance. The technician tryed for four or five times and could not get it started. He had to jump start the car. He told me it has to be an electrical problem. I took it to the dealership and they did an electrical check and they said that they could not find any problems and told me to bring it back when it does this again. It did it again today and it is getting very annoying. Does anybody else has this problem? Any suggestions?