Hi. I am an ovner of Meriva 2011, only 42,000 miles. A month ago an error came up on the dashboard. A mechanic said sensors need changing. Initially, after changing them the error disappeared however the car still overheats. Another garage flushed the cooling system but it did not work. We took it to another garage. We have been told that there is no mechanical fault but issues with ecu . Apparently they could not do dignostics as computer came up with loads of error and after plugging in again no error were found. Mechanic said the fan is working too early, funny enough if the heating is on the car does not over heat. We have already spent £200 and the car is still not fixed. Any ideas please?