My friend's C230 has a strange sound that seems to come from the driver's side front area, a kind of squeaking for lack of a better description. It seems to occur most after the car has been driven and is rather audible within the cabin during regular driving. It can also be heard if I push down on the front corner of the car. The dealer supposedly greased the shocks, but it didn't help much. Anyone else have this problem, and was anyone able to solve this annoyance? What kind of front suspension does the C230 have? Thanks in advance.