Cross wired leads attempting to jump start?
 
                Hiya, while attempting to jump start my 07 Ford Focus, I connected the live lead to the negative terminal. The display now shows an engine fault.... Not surprisingly.... I've been told there is a reset button somewhere. Is that the case or do I have to take it to a main dealer?? 
Any assistance much appreciated. 
Steve.
            
             Stephen
            
 October 2011