Window lock off switch

[Richiano]

Does anybody know if the window lock off switch and the button for the fold in door mirrors are supposed to light up and if so how do you remove them? I have just ordered a couple of spare lamps for the heated seat switches from our friends at Holdcroft and thought i might aswell replace the lamps in the window/mirrow switch at the same time.

 

[Proximus]

Mine also do not light up.
Every other button lights up, except the window lock and fold-mirror button