Mercedes-Benz 2008 M-Class Operator's Manual page 176

Drive a full circle at a vehicle speed of
between 3 mph and 6 mph (5 km/h
and 10 km/h).
When calibration was successful, the
following message appears in the mul-
tifunction display:
Compass Calibration
Completed Successfully
i
If the message Compass Calibration
Completed Successfully does not appear in
the multifunction display, drive another full
circle.
If calibration does not succeed within 3 minutes,
the message Compass Calibration appears
in the multifunction display again. Calibrating the
compass has failed due to outside influences.
Repeat compass calibration in a different
location.
Audio search function
Use of the Audio search function to select
a radio station will enable you to start a
frequency scan ( Frequency ) ( page 160)
or select a radio station stored in memory
( Memory ).
Move the selection marker with
button æ or ç to the
submenu.
Press button j or k repeatedly
until the message Audio Search
Function appears in the multifunction
display.
The selection marker is on the current
setting.
Press button æ or ç to select
or .
Frequency Memory
Setting automatic central locking
Use this function to activate or deactivate
the automatic central locking. With the
automatic central locking system
activated, the vehicle is centrally locked at
vehicle speeds of approximately 9 mph
(15 km/h).
Vehicle Move the selection marker with
button æ or ç to the
submenu.
Press button j or k repeatedly
until the message
Locking appears in the multifunction
display.
The selection marker is on the current
setting.
Press button æ or ç to switch
the automatic central locking
Controls in detail
Control system
Vehicle
Automatic Door
On or Off .
175