Using a picture of the standard Mercedes "radio removal keys", I guessed at the dimensions (after looking at the size and depth of the "key holes" and built two keys from some leftover FR4 double-sided copper-clad circuit board that was thrown away at work using a metal brake and nibbler. It took about 2 minutes. I would suggest using something stronger like sheet metal or buy them from an MB dealer or Ebay!

I carefully inserted them into their slots at the extreme lower left and right side of the climate control module with the gaps on each key facing inwards. Gently pushing them to the end of their travel, I could feel the module loosen up and was able to remove it very easily with my fingers.

The white plastic light "bulb" was in the center of the bottom of the module. I turned it a quarter turn and removed it with small needlenose pliers. (It seems to take a little coaxing to get it out) The bulb is a tiny 12 volt DC "wheat bulb" and is actually installed in a small socket that is pushed into the main receptacle. If you don't have a MB dealership around, you can actually remove the tiny bulb by straightening its two wires and pulling it from its socket. The bulbs are available at Radio Shack and other electronic supply houses. Some auto parts places may have similar bulbs you could use. Just push the two wires through their corresponding holes and trim them to fit. Push the bulb back into the main receptacle, install it into the climate control module, put the module (without the removal keys!) back into the dash and voila! Back in business!

Thanks so much for all the input and help, guys! You rock!

I am going to buy the special "radio removal keys" next time I am by the MB dealer! They are worth the money to keep around, just in case!