Chrysler 200 passenger heater not working with coolant reservoir containing milky substance on Chrysler 200

Some Chrysler 200 owners report experiencing issues with the passenger heater not functioning, often accompanied by a milky substance in the coolant reservoir. This milky appearance may indicate a leaking or blown head gasket, which can cause coolant to mix with engine oil. Additionally, some owners find that a faulty heater core contributes to the lack of heat on the passenger side. Others report that gelled coolant may be blocking the flow through the heater core, further impeding heat delivery. It is crucial for owners to address these potential issues promptly and seek inspection from a qualified mechanic to ensure the heater operates correctly.