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Operation of the Engine Cooling System

Model: (Various brands) Various

In this video tutorial, you will see a diagram representing the operation of the radiator and the entire cooling system of an internal combustion engine. It mainly consists of an internal radiator for the cabin and an external radiator that circulates the coolant through pipes, driven by the water pump. The radiator fluid plays a crucial role in dissipating excess heat, regulated by a thermostat that controls the flow of the correct amount of fluid and monitors the engine temperature.

Updated on 28 March 2026 by ScegliAuto

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How to Open the Bonnet of a Renault Megane if the Lever is Broken?

If the lever that unlocks the bonnet of the Renault Megane is broken or not functioning, there is an emergency procedure to unlock the mechanism: remove the right front grille located at the top of the bumper. Once the grille is removed, you can locate the actuator mechanism: by pulling the spring in this position, you can unlock the actuator, allowing you to lift the bonnet and access the components located inside the engine compartment. You can then close the bonnet simply by lowering it.

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