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.
Important safety notes
WARNING
The ABS, the BAS, and the ESP® switch off
when the differential locks are switched on.
When the ABS, the BAS, and the ESP® are
switched off
• wheels may lock during hard braking
• stee ...
Useful information
This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
...
Center console
Center console, upper section
1 Audio system/COMAND; see the separate operating instructions
2 Seat heating
3 Seat ventilation
4 PARKTRONIC
5 Downhill Speed Regulation
(vehicles without AI ...