Cooling system car overheats after driving about forty kilometers

The is indicating that there is a fault code set in the ECU, you will need to get a scan and report the code for further assistance, the code will indicate the problem you are having.

You can also start with checking the thermostat, check that the cooling fans are working and check for any external coolant leaks with a cooling system pressure test, never remove the cooling system cap with a hot engine as you will get scolded.