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.

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.
Lock the vehicle.
contacts checked at a qualified specialist 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:

    Importing contacts manually
    The stored phone book and the vCards remain in COMAND, even if you use COMAND with another mobile phone. The entries can be viewed without a mobile phone. For this reason, delete the phone ...

    Ashtray in the rear-compartment center console
    Close the ashtray when it is not in use and before you fold the rear seats forward. You can otherwise damage the ashtray. Vehicles without a Rear Seat Entertainment System have an ashtray ...

    Tires
    The specified tire pressure is printed in yellow on the emergency/collapsible spare wheel. ...