Do you have the 2 buttons at either side of the speedos?
Yes. The one on the left lets me change the time and then flicks between two service interval screens. the one on the right resets the trip counter. I've tried holding both in for a few seconds etc and no menu appears. I also have the toggle on my wiper stock and tried holding that in and nothing (individual clicks cycle through the various displays). The final button is on the underside of the stalk and doesnt do anything while held in.
I dont have a manual for my van and cant find one online either