Hi,

Do these switches have a backlight?

Mine doesn’t, yet every other button in the car does.

My18.5/19 140tdi allspace highline, with all options (if that matters)

Cheers.

Check out the Green Car Reports web site.
From a Californian perspective that's the true driver of auto matters that matter.
Battery
Fuel cell
Hybrids incl plug-in,
Emissions, it's all covered.
Now we are (shortly) no longer vehicle manufacturers California matters...