Mk2 focus 1.6 auto

[crocket81]

I have a 2005 ford focus auto that hasnt been used for a while, the battery went flat so i put a new one on it and now i have an automatic gearbox malfunction, i suspected the instrument cluster but after inspection dont think this is the case, i think it is the pcm/tcm at fault, im just wondering if i get a second hand pcm can i use the ucds software to swap the information from my old unit to the new one, Any info would be brillant