Mercedes-Benz ML55 AMG coolant tank leaking at top driver side hose connection, possible crack on Mercedes-Benz ML55 AMG

Some Mercedes-Benz ML55 AMG owners report experiencing coolant leaks at the top driver side hose connection, often due to loose hose connections, broken radiators, or failed water pumps. These leaks may also stem from a cracked expansion tank or brittle plastic parts in the cooling system. Owners emphasize the importance of accurately diagnosing the issue, as potential causes include a cracked coolant reservoir, damaged hoses, or even a blown head gasket. To address the leak, some have found success by inspecting the hose connection for damage and tightening the hose clamp. However, if repairs seem daunting, it is advisable to seek assistance from a qualified mechanic or Mercedes-Benz specialist, as replacing damaged components may be necessary for a lasting solution.