Unlocking the driver's door (mechanical key)
If the vehicle can no longer be unlocked with the SmartKey, use the mechanical key.
If you use the mechanical key to unlock and open the driver's door, the anti-theft alarm system will be triggered ().
- Take the mechanical key out of the SmartKey ().
- Insert the mechanical key into the lock of the driver's door as far as it will go.

- Turn the mechanical key counterclockwise to position 1.
The door is unlocked. - Turn the mechanical key back and remove it.
- Insert the mechanical key into the SmartKey.
See also:
Selecting a station
Selecting a station using the station
search function
Turn or slide
the COMAND
controller while the display/selection
window in the radio display is active.
Station search scans up or down ...
The M-Class also protects its occupants after a crash
As part of the POST-SAFE® functions, the new M-Class can activate a variety
of systems which can contribute towards avoiding post-accident risks. After a
more serious crash, the hazard warning lig ...
Headlamp cleaning system
The headlamps are cleaned automatically if
the "Wipe with washer fluid" function is
operated ten times while the lights are on and
the engine is running. When you
switch off the igni ...
