Where is the place where Citroen c4l changes antifreeze and releases air?

The stomata are not emptied. Open the water tank cover and fill it with water. Start the vehicle, turn on the warm air and let the engine run at idle speed. When there is less water in the water tank, add it again. The engine cooling water circulation electronic fan rotates and then covers the water tank! If there is something wrong with the car, ask the car master. 4S shop professional technician, 10 minutes to solve.