ashkot

I have a 2007 R350 4Matic. Most of the time the suspension works fine but after about an hr or so of driving I get a dash icon with the image of the car and an up-pointing arrow. Many times the car also goes down and I get a red malfunction warning but that also goes away after a while. About a year a go I had replaced the rear airbags but the issue still persists.

Any ideas where the problem lies? Any help would be highly appreciated. Thanks in advance.