What does an illuminated Maintenance Fault light signify regarding the train's systems?

An illuminated Maintenance Fault light indicates that some systems on the train may require attention. This warning serves as a notification that while the train may still be operational, there are issues present that need to be assessed to ensure the safety and efficiency of its operation. It is a proactive alert meant to prompt maintenance personnel to investigate the underlying issues, as they could potentially lead to more serious problems if left unaddressed.

This is crucial in maintaining safety standards and operational reliability, as it guides the maintenance team to perform diagnostics and repairs before further issues develop. The warning does not imply that the train is out of service or that all systems are functioning well; instead, it points to the necessity of evaluation and possible intervention.