Have had rear right side sinking over night,on my 211 sedan full airmatic. Was at mb technician they checked air lines, replaced compressor filter, airbag brand new valve block brand new, the vehicle now doesnt drop over night but after measuring it almost every day it drops half cm, what are my options any advices, i have had with this side issue since i bought the car 4 yrs ago always rear right side

 

Decided to hook up my diy diagnostics these are the codes i got for airmatix