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 manually, 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.

1 To lock
■ 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.
Towing a vehicle with both axles on
the ground
It is important that you observe the safety instructions when towing away
your vehicle .
The automatic transmission automatically
shifts to position P when you open the driver's
or front-p ...
Refueling
Fuel filler flap
Example: G 550 fuel filler cap
1 To open the fuel filler flap
2 Tire pressure table
3 Fuel type
4 To insert the fuel filler cap
When you open or close the vehicle with the
Sm ...
Tire size designation, load-bearing
capacity and speed rating
WARNING
Exceeding the stated tire load-bearing
capacity and the approved maximum speed
could lead to tire damage or the tire bursting.
There is a risk of accident.
Therefore, only use tire ty ...