The majority of the time this happens it is 20 mins however the last couple of times it has been on for 30 mins. When this happened I was talking to a branch manager at another ford dealership. Unfortunately the service staff were off as it was saturday so couldn't put it on machine. I have been told that my model of car should shut down after around 30 seconds even in hot weather however i live in scotland so we aren't getting much hot weather. Even in March when I got the car it was quite cold and this kept happening. The garage are the one that told me there is a fault with the car. It actually sounds like a plane taking off.

Thanks very much I've been arguing with the dealership since I got the car. So you don't think that a new ECU will work on the car. The only fault the garage has detected was that there was unusual readings with the temperature sensor and that is why they they changed it. Im just worried incase the car is overheating and causes any damage to the car.

hi does sound a extreme amount of time for cooling, just too correct a preavious post car no longer use fan switches like sugested,your car is can bus and relies on the body controll module too bring in the fan which gets its temp info from the engine ecu so either engine ecu thinks its hotter than it is earthing fault ect or body control ecu does, try another dealer you can take it too any ford and tell them this is the final chance, if the car is financed dont let ford tell u what u can do,just stop paying the finance and tell them ur not paying for faulty goods they will recover there debt from ford as this is were there money is but i will not get that far ford will step in and correct this, this is legal remember do not pay it ,they will chase up fords good luck ! one more thing as i think of it has your car got aircon if so try not too use it see it the problem only happens when switched on thanks

There is still a common temp swicth mounted in the head to trigger the ECU which in turn triggers the fans it cannot work any otherway,it has to get its temp reading from somewhere and then switch the fans its irelevent whether it uses can bus or old fashioned wire to wire.I hope fitting the new ECU cures the problem if not do as Robert suggests and stop paying for it.