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.

► Firmly turn the mechanical key
counterclockwise
as far as it will go to position
1 and hold it in this position.
► Pull the door handle quickly.
The locking knob pops up.
The door is unlocked.
► Turn the mechanical key back and remove
it.
► Pull the door handle again.
► Insert the mechanical key into the
SmartKey.
See also:
Freeway information
When driving on highways, you can have the
nearest gas stations, rest areas, etc., as well
as your current distance from them, shown
on the right-hand side of the display.
To activate navigati ...
Road-simulation test rig: an ordeal for the chassis
The road-simulation test rigs are just as punishing as the body testing
facility. Applying identical load spectra over the same distance, the test
engineers torture the M-Class chassis in all of i ...
Charging the battery
WARNING
Never charge a battery still installed in the vehicle unless
a battery charger unit approved by Mercedes-Benz is being used. Gases may escape
during charging and cause explosions tha ...
