General notes
If you cannot lock or unlock the vehicle with the SmartKey, either the battery in the SmartKey is discharged, the SmartKey is faulty or the starter battery is discharged.
Check the battery in the
SmartKey and replace it if necessary.
Unlock the driver's door using the
mechanical key.
Lock the vehicle using the
mechanical key.
Have the starter battery and the
battery contacts checked at a qualified specialist workshop.
If the SmartKey is faulty, contact Roadside Assistance or a qualified specialist workshop.
See also:
Charging the batter
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 explosio ...
Important safety notes
The rear view camera is an optical parking aid. It shows the area behind your
vehicle in the COMAND display.
WARNING
Make sure that no persons or animals are in the maneuvering range. Otherwi ...
Resetting to factory settings
For safety reasons, the Day Lights function
in the Lights submenu is only reset when the
vehicle is stationary.
Press the
or
button on the
steering wheel to select the Settings
menu.
P ...
