Why is your heater light flashing on transit 2004?

If the heater light is flashing on your 2004 Transit, it typically indicates a problem with the engine's cooling system, such as low coolant levels or a malfunctioning thermostat. It could also signal an issue with the heater itself, like a clogged heater core. It's essential to check the coolant level and system for leaks, and if the issue persists, consider having a professional mechanic diagnose the problem. Ignoring the warning could lead to overheating and potential engine damage.