Glovebox
Hi,
Have you got a continuity tester (multimeter); take old bulb and check if it is blown (as new bulb doesn't work it may not be) also check all fuses (be careful as you may need to re-enter radio codes if stereo loses power)
Start up car and while running check all Lights on car (you may need a buddy to assist you) are there any other lights not working ( it may be an earth fault - have you made any modifications electrically prior to this problem)
You may just have a faulty (sticky) glovebox door switch, but where this is?? if you dismantle the glove box door will you be able to get it back in as neatly as it fits now; you might be better off waiting for your next service and asking the mechanic to look at it then!
Hope this helps