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

See also:
Issued warning
If you leave the lane and if a lane marking has
been detected, the steering wheel begins vibrating.
If the turn signal is set before changing the lane,
a warning is not issued.
End of warning
T ...
Incoming call
Receiving calls
If the number of the caller is stored in the phone
book and is transmitted by the network, the
name of the contact is displayed. Otherwise,
only the phone number is displayed.
...
DTMF suffix dialing
DTMF suffix dialing can be used for gaining access
to network services or for controlling devices,
e.g., to make a remote inquiry of an answering
machine. The DTMF code is needed for this
purp ...
