Hi I have a seat Leon Cupra T 2.0TFSI 2007 which I have recently just purchased, but a overheating problem has occurred with it, the car does not loose coolant or mix with oil and I’m getting hot heaters too. It overheats on idle or in 1st heat on Standhill and when driving, the radiator fan does not kick in only kicks in when the I switch the car off I don’t know where to start If anyone could help please thanks