Switching between letters and numbers
Depending on the menu, you can switch between entering letters and numbers:

See also:
Six generations of the BMW 3-Series: The success story of a global
trendsetter
If there is such a thing as a quintessential BMW, it is without doubt the BMW
3-Series. The 3-Series is everything a sports sedan should be, and for years it
has stood undisputed at the summit of ...
Interior
Even though it's relatively unchanged for 2009, the X3's interior remains
very upscale for this segment. My test car's dark brown leather upholstery and
black dashboard made for an especially clas ...
Opening the main menu
Press the button.
The main menu is displayed.
All iDrive functions can be called up via the main
menu. ...
