DAB Mirrors Eco Camera

[MattG32]

I've just got my XF back from the auto electrician, after the rear BCM died (corrosion! The amount of water in XF's is criminal), and was replaced.

I have lost DAB completely, not even showing on screen. StopStart isn't working, powerfold mirrors not folding, guide lines gone from reverse camera. 

I'm guessing these are all, in some way, connected (no pun intended).

Rather than taking it back, is there some simple solution that will fix it?

Thanks.