Locking the vehicle (mechanical key)
If the vehicle can no longer be locked with the SmartKey, use the mechanical key.
•► Open the driver's door.
•► Close the front-passenger door, the rear
doors and the trunk lid/tailgate.
•► Press the locking button.
•► Check whether the locking knobs on the
front-passenger door and the rear doors
are still visible. Press down the locking
knobs by hand, if necessary.
•► Close the driver's door.
•► 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 clockwise as far
as it will go to position 1.
•► Turn the mechanical key back and remove
it.
•► Make sure that the doors and the trunk lid/
tailgate are locked.
•► Insert the mechanical key into the
SmartKey.
See also:
Automatic transmission
WARNING
It is dangerous to shift the automatic
transmission out of parking position P or
neutral position N if the engine speed is
higher than idle speed. If your foot is not firmly
on the ...
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
th ...
Drive sensibly – save fuel
Observe the following tips to save fuel:
The tires should always be inflated to the recommended tire pressure.
Remove unnecessary loads.
Remove roof racks when they are not needed.
Warm ...
