What to Do When the Car Coolant Warning Light Comes On?

[DiSamantha]

When the car coolant warning light comes on, it is recommended to add coolant immediately; otherwise, it may affect the normal operation of the engine. Most cars use water-cooled engines, which require coolant for heat dissipation. Generally, water-cooled engine coolant has two circulation paths: one is the major cycle, and the other is the minor cycle. When the engine is just started, the coolant undergoes the minor cycle, during which it does not pass through the radiator, thus speeding up the engine's warm-up. Coolant needs to be replaced regularly. If not changed for a long time, the freezing point of the coolant will rise, and the boiling point will drop, which can affect the normal operation of the engine.