This information can be read from the older climate control systems (pre "96) of a C class as well.
I did something similar with my "96 display, just to change the type of engine I have (the system came out of a 36AMG and was installed in a 250 Diesel), but I ended up with a disordered system that had to be reset by the dealer (I could not control most of the vent ducts opening valves anymore) and the display kept running from degrees Fahrenheit to Celsius and back...
Just be aware that it is possible to change the input data when you are messing around with these settings! It is pretty nice though to see what comes up the display...lots of info...
with a minor 600+k