Sorry you feel that way. It was diagnose with Xentry and test show that the problem is with left front strut. You were told it needed replacement. Being that unit requires a special machine to pressurize the system only Mercedes will be able to replace. No competitor has one. $300 was for our time spent testing which is only 1.5hrs on a Mercedes.
LEW PETRONE, Owner
ASE Certified Master Auto Technician
NJ Licensed Motor Vehicle Inspector
609-655-1122