What are the symptoms of insufficient coolant in a sedan?

[VanDante]

When driving with insufficient coolant in the vehicle, the car's engine and radiator lose protection. A lack of coolant affects the radiator's cooling efficiency, preventing it from achieving the necessary cooling effect. This disrupts the normal circulation of coolant, leading to overheating and, in severe cases, engine damage. In cold climates, it can also cause the engine or radiator to freeze, resulting in engine failure and rendering the vehicle unusable. Methods to determine if coolant is insufficient: Observe the coolant warning light on the dashboard. If it lights up, it likely indicates a lack of coolant, though it could also be triggered by excessively high cylinder temperatures. Check the coolant reservoir. If the fluid level is below the minimum mark (MIN), do not continue driving; add coolant promptly. Inspect the water level markings on the coolant reservoir. The coolant level should normally be between the maximum and minimum marks. To check if coolant is insufficient, observe the markings. If the coolant level is below the minimum mark, it indicates a shortage of coolant.