2 questions …. The topic has been taken over here many times and I have read a lot about it. I have a SL 500 r230 bj 2003. I get the error message “abc carefully drive”, displayed. I have had a star diagnosis done : error code C 1525-064 system pressure too low. The error comes when I drive a few times over recesses. Some days there is no error message. Otherwise it goes up and down without problems and sinks nowhere. Also I have not been able to detect oil loss. It is not possible to make remote diagnostics, also that is clear to me. Can someone tell me what it might be and does someone know a specialized Abc chassis specialist near Kassel?