Why are the ford fiesta radio steering wheel controls not working?

If the steering wheELRadio controls on the Ford Fiesta are not working then there are two very common reasons. The first is that the buttons themselves or the wires powering them are not working in some way. This may mean they have broken, burned out, or the battery is not giving them power. In any event, this will cause them to fail and You will need to trace back the source of the problem. The other much more likely issue will be that the fuse that powers the controls has burnt out. If this is the case then You will simply need to replace the fuse, which will cost You about 10 dollars and take about 5 or so minutes.