Auto Window Wipe / Auto Headlight Dip not working.

[Delion]

Before a trip to the local Citroen dealership, I thought I'd ask here first.

Citroen C4 Picasso Exclusive + 63 plate.

The auto wipe / headlight dip / lane warning isn't working, this went when I turned the lane warning off. I've had this issue once in the past and I used diagbox with success but this time it's not having it, so I'm guessing something else may have possibly gone down.

I've taken photos which I've attached, 1 with paper over the sensor and 1 with no paper over the sensor and get the same result. Could the ambient sensor on the back of the mirror not be working or the rain sensor itself?