I've done everything I can, reset the infotainment system, swapped the fuse, just in case, checked to see if it has any fault codes, nothing.
I should correct what I said about the camera, it doesn't have a camera, just visual representation of the back of the car on the screen, with the coloured markers that change as you get closer.
I am leaning towards the reversing light switch on the gearbox, as that 'must' have something to do with instigating the whole, reversing sensors etc. Normally, when reverse is engaged, you'll hear a beep, to show reverse is selected, that isn't happening either.
Can anyone help, perhaps with pics, of where the switch is located on the gear box and how is best to access it from the engine bay (top) as I have no way to safely get underneath? ð