Give this a go and let me know if it works.? I could understand not having inches available seeing as the Austrians hate them, but burying such a simple task under passwords and multiple parameter levels is completely asinine. If neither of these passwords work try 6860.? In the end it all comes down to the software version on your display so you may need to lean on the factory as some display versions were used for such a short time there is almost (or in some cases no) documentation available.? Good luck and hope this helps.
Wyeth Schiffelbein