SmartKey functions
■ To unlock centrally: press the 
button.
If you do not open the vehicle within approximately 40 seconds of unlocking: • the vehicle is locked again.
• the theft deterrent locking system is armed again.
■ To lock centrally: press the 
button.
The SmartKey centrally locks/unlocks: • the doors • the tailgate • the fuel filler flap
When unlocking, the turn signals flash once.
When locking, they flash three times.
You can also set an audible signal to confirm that the vehicle has been locked. The audible signal can be activated and deactivated using the on-board computer .
When it is dark, the surround lighting also comes on if it is activated in the on-board computer .
See also:
Control panel for 3-zone automatic climate control
USA only
Front control panel
1 Sets the temperature, left
2 Defrosts the windshield
3 Switches maximum cooling on/off
4 Switches cooling with air dehumidification on/off&nb ...
HOLD function
Important safety notes
WARNING
When leaving the vehicle, it can still roll away
despite being braked by the HOLD function if:
• there is a malfunction in the system or in
the voltage supply.
• t ...
Exterior spare wheel bracket
General notes
WARNING
If the spare tire is more than 6 years old or is
not the same model as the regular tires, have
the spare tire replaced with a new tire at the
nearest Mercedes-Benz Center.
...