you will have to replace the resistor pack that is located underneath the passenger side glove box it is located next to the heater blower motor also check the plug that connects the resistor pack to the heater blower motor as they are prone to burning out resulting in melted plugs.
kev
May 2006
try mirez.co.uk you will find fx there.
jg
January 2005
I can answer this question...
how can i fix my heater blower,ford mondeo,1.8 turbo diesel,n reg?