On my climatronic im not getting the ambiente temp reading shown in the picture below as number 3

Is this a fault with the system??

Weird! It should be there. Have you done an error code scan on the climatronic unit?

It has it's own temperature sensor, separate from the one that displays temperature on the dash. So that might be faulty.

Yes. Do you have a value, even something gash like "88osuperscript8" in that space? If you have a trip computer, does the ambiant temperature mode on it work believably?