Mercedes-Benz S430 electric fan failure leading to overheating and noise issues resolved by fan replacement on Mercedes-Benz S430

Some Mercedes-Benz S430 owners report experiencing electric fan failures that lead to overheating and noise issues, indicating a malfunction in the cooling system. Common causes of these failures include coolant leaks, problems with the radiator fan, or a failed thermostat. To diagnose the issue, owners can test the fan operation using a scan tool to check communication with the engine control module or by supplying 12v directly to the fan connection. When the electric fan is confirmed as the source of the problems, replacing it is often necessary to restore proper functionality to the cooling system. Promptly addressing these electric fan failures is crucial for preventing further overheating and associated complications.