Mercedes-Benz S-Class 2008

Need gone .its a 08 s320 v6 diesel.2 0wners from New. With only 122k miles from New..it has the full s class spec...the drive is like new ..a powerfull floating magic carpet..out of test and tax but will pass no problem..the only issue with the car is .the suspension drops at rear. I can confirm that its not a air pump problem and not a air shock problem..maby a sticky valve block...when I go to drive in morning I press f7.and f9 on my top don diagnostics one time only... I can drive it all day with no problem what so ever.easy fix for some body that knows these mercs..the price is firm at 3400 .a lot of car for silly money. 085 1313008 loughrea