2012 Ford Focus SE AUX system problems?

I own a 2012 Ford Focus SE, which is a hatchback. Lately, whenever I press the AUX button, it goes to sync for a second and then it reverts to radio. It's maddening. I tried parking my car with the engine running and turning it off and back on again, to no avail. Is it possibly an electrical issue? I have no idea if these two things correlate, but my window, which I roll down often to show my ID, stops functioning sometimes and stays closed. I know that it's not stuck, because it will randomly stop working and then start again. Are these two things being caused by an electrical issue in my car?

Have you tried looking in the owners manual? It's not printed just to waste trees

Yes.it is problem

Hi so like all ford fitted extra thi sone has ceased to work as it was as cheap as ford could fit when new. So now you need a retro fitted stereo system

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