Hello need some help. My 2000 s500 problems started a week ago.First no start no crank. Replaced starter.cranked but still no start... Noticed that the car was dropped on all four sides. Mechanic told me it would rise once it actually started. But he had no idea how to get it to start.I towed it somewhere else. Somehow the fuel pump fuse was missing..strange..I was told the air strut on the passenger rear had a leak. Fixed that took 3 days but back in my car..took my car on the highway set cruse control to 70mph. Two minutes later the check engine light came on.solid light then flash then solid. Car acted as tho it wanted to stall out. Made it home now I'm stumped .have been all over these forums for a week and it seems like every problem I read happens. What could my newest issue be. Help/ ideas Thanks.