Thanks for the advise. You are correct in your statment that hardly anyone has the proper tools & experience to check the ride height according to the M/B manual. I would think there is an easier way though. The S600 has the automatic ride control system. Does each wheel have a seperate control unit that has a height adjustment? I can't find anything that looks like it can be adjusted that is hooked up to the wheel components.

I also measured the distance from the fender well to the floor (checked tire pressure first), and found that the back is 3/4 of an inch off from left to right side of the car. Are there rubber pads in the spring assembly or subframe that could have worn or compressed? I also have a vibration at 45-60 m.p.h.. Can this all be related???? All the dealers are stumped. What can I do?