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.

SmartKey and replace it if necessary. Check the battery in the SmartKey and replace it if necessary.
mechanical key. Unlock the driver's door using the mechanical key.
mechanical key. Lock the vehicle using the mechanical key.
battery contacts checked at a qualified specialist workshop. 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:

    MB Info call button
    Open the stowage compartment under the armrest. Press and hold MB Info call button 1 for more than two seconds. This initiates a call to the Mercedes-Benz Customer Assistance Center. The i ...

    General notes
    The HOLD function can assist the driver in the following situations: • when pulling away, especially on steep slopes • when maneuvering on steep slopes • when waiting in traffic The vehicle is kep ...

    Other status indicators of the navigation system
     - : you have reached the destination or an intermediate destination.  - New Route... or Calculating Route: a new route is being calculated.  - Off Map or Off Mapped Road: the ...