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 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 tailgate are locked.
- Insert the mechanical key into the SmartKey.
If you lock the vehicle as described above, the fuel filler flap is not locked.
The antitheft alarm system is not armed.
See also:
Notes for 4MATIC vehicles
Vehicles with 4MATIC must not be towed
with either the front or the rear axle raised,
as doing so will damage the transmission.
If the vehicle has transmission damage or
damage to the front or ...
Important safety notes
WARNING
Do not turn off the engine before the vehicle
has come to a complete stop. With the engine
not running, there is no power assistance for
the brake and steering systems. In this case ...
Calling a number stored in an entry
Using the phone book
Select Name in the telephone basic menu
by sliding and turning
the
COMAND controller and press to
confirm.
Call up the contact.
Contact with multiple telephone
n ...
