auto gearbox lightbulb on a R129

[Fais]

Hi all

I've just purchased a R129 - sl320/1995, and driving at night realised that the lightbulb on the autogearbox which lights up P/R/N/D etc is not working. is this something i could easily take off, if so how.

Or best to visit a dealer or garage? Could i go back to the dealer saying this should have been checked and fixed in the major service that was carried out 2 weeks ago?

Thanks