Are you asking about OBD? If so, a 95 is OBDI and you need to pull codes from each ECU by holding a button on the ECU and counting MIL flashes from the dash. 96 and up MY are OBDII and the port is under the dash (steering wheel)
so what your saying is that I have to take the car to the dealerships tech to get the suspension malfunction light cleared
If its the suspention light yes take to dealer with their ferrari tester. If you started the car a few times without moving it you will also get the light. You can also take the caps off and look to see if the gear is broke, usually obviouse.
The suspension ECU and diagnostic dongle (ALDL connector) are to be found in the passenger foot-well. If diagnostics are required, a shop with the factory SD-1 or SD-2 tool will be needed. There are no communications on a 355, regardless of year, with the OBD port for this particular system.