If you have the OBC with the little inset round button down on the bottom
right of the pad, then changing from German to English (or vice versa) goes
as follows:
Use a pin or pen to push in the round button.
Holding the button down, press the UHR-DAT Button (top left hand) you will
see the display change each time you hit the button.
Christopher M Luquette
1985 745i