Mercedes-Benz M-Class Operator's Manual page 120

Memory function
118
Adjust the seat (
X
On the driver's side, adjust the steering
X
wheel ( page 112) and the exterior mirrors
Y
( page 114).
Y
Press the M memory button and then press
X
one of the storage position buttons 1, 2 or
3 within three seconds.
The settings are stored in the selected
preset position. A tone sounds when the
settings have been completed.
The memory function can still be used if the
SmartKey has been removed.
Calling up a stored setting
Press the button for storage position 1, 2
X
or 3. Keep pressing until the seat, steering
wheel and exterior mirrors are in the stored
position.
i
The setting procedure is interrupted as
soon as you release the storage position
buttons.
page 106).
Y