1999 ML430 won't start
 

I just bought a 1999 ML430. I started it and turned it off ten or more times while checking it out and stopping to get gas on the way home with it etc., then after getting home it won't start. The starter doesn't turn over or do anything at all. The lights on the instrument cluster come on, but nothing happens. I can't even find a repair manual for this model. Does anyone have any suggestions? Thanks.