First this is more for fun I managed to find the on-board diagnostic codes for the B5 but not the B6. What Im wanting to know is how do you get the climate control to display anything other then just temp? I know there has to be something snuck in there to play with that can be pulled out. There is to much processing power in that little thing to just do temp there has to be something tucked in to play with.

The only one that I have found that works so far is changing from F to C. with the hold recirculation then the temp + to change it. So far other attempts to get something as simple as the motor rpms or even speed in kph have failed. Anyone have a clue?

A4 3.0 B6 quattro