the hydraulics that raise and lower my car do not function. what's the problem and solution.

What is your question?

my car sits really low and the message I get is that car is rising but it does not lift. I sits low in ht rear.

What makes this problem better or worse?

It's worse when I have not driven it for a few days.

How long has your 2010 Mercedes-Benz E550 had this problem?

problem started 4 weeks ago.