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How to Bleed the Car Cooling System

Model: (Various brands) Various
Part: Radiator

Video tutorial

In this video tutorial, you can see how to bleed the car's cooling system. Whenever you drain the fluid, it is necessary to bleed the system, for example, when cleaning the radiator or replacing the fluid.

The first step is to lift the car, preferably using a mobile ramp; at this point, remove the lower radiator hose on the passenger side. Remember to set the air conditioning system to maximum temperature.

Locate the two bleed valves; then open the valve and fill the reservoir with fluid. When it is full, tighten the screw; repeat the same step on both screws.

Next, continue the work with the engine running. Now keep the car running for a couple of minutes at idle and set the cabin air to maximum heat.


Updated on 22 May 2026 by ScegliAuto


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by ScegliAuto

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