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The cooling system in a BMW E46 operates by circulating coolant through the engine to absorb heat, then transferring that heat to the radiator where it dissipates into the air. The water pump is responsible for moving the coolant, while the thermostat regulates the coolant flow based on the engine temperature. As the engine heats up, the thermostat opens, allowing coolant to flow to the radiator for cooling. Additionally, the electric fan may engage to enhance airflow through the radiator, ensuring optimal engine temperature and preventing overheating.

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2mo ago

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