I've searched through past posts but can't find this exact problem.

The lighting on the clock of my 99clk320 has gone out. The speedometor, temperature gauge and everything else is fine. What's more, it seems that ever few days, the light comes back on! I just bought the car used and found out that the car has been in an accident before. Is this just a fuse or a bulb that I need to replace?,... or am I in store for a lot more electrical problems?! (i have no warranty of course)

Thanks to all the MB pros for your help.