Are you talking about the light bulb behind the blue/red control panel?
I have removed the climate control panel, but I never disassembled it. It doesn't look hard to take apart. But, you would need to find the right bulb. That might not be easy.
I recommend looking on ebay. You can sometimes find the whole climate control assembly cheap. I actually replaced mine because one of the buttons was scratched. I think I paid $20 with free shipping. You will see some for a high price, but be patient and keep looking and you might find a deal.