Hard rear suspension

[Icelandicbenz]

Hey new here! I got e430 with the ADS in back and i think its failed because being in the back and going over speed bumps makes you jump because the suspension is very hard.. How can i fix it? Also it sits higher in the back than front. Has my accumulators failed? Can i remove the whole ADS system and use normal shocks without ADS? Or can i adjust the hight by some screw?

Regards: icelandic Benz