You are not alone. ADS system failure is a common with older vehicles. I attached a link describing my adventures in ADS.

http://v12uberalles.com/ADS.htm

I believe that Strutmasters.com sells a retro-fit kit to eliminate the hydraulic suspension.

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1995 S600, 1 of 618 (sold)

"Speed is just a question of money...how fast you wanna go?"

LONG LIVE THE W140!
Visit my Web Page at www.v12uberalles.com