It shouldn't be a huge task to gain access and replace the socket. On the mk7 that north America has, the socket is connected with a single plug. This site only really can deal with issues related to the version built in Mexico for the U.S and Canada.
These are a few images of a front power point in an early build (june-2010) fiesta i am breaking up. As you can see, the internal surfaces can become very nasty. Spilled sugary drinks, food debris and dog hair, among other gross things, tend to accumulate until it becomes inop.
Pics of 12v socket in forward area of center console.plus a couple of images of the connector. This might be similar to yours. But, many things have changed in fifteen years.