Hi Witalik - If you put your ear to the drivers side front grill after youve turned the ignition off. you should hear a sort of buzzing sound for abt 10mins. thats the secondary coolant pump. IF you cant hear it, it may need changing OR, the wiring might need re-securing.
i find myself constantly checking this every time i get out of my car now!
the list of parts that needs replacing may of increased again then.......