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:

    Cockpit
    Cruise control lever Instrument cluster Horn PARKTRONIC warning display Overhead control panel Operates the climate control system Ignition lock Start/Stop button Adjusts the stee ...

    Brake lamp
    - Switch off the lights. - Open the cargo compartment. - Open the service flap. 1 Brake lamp - Turn the bulb holder counter-clockwise and remove it. - Remove the bulb from the bulb holder. - I ...

    Cleaning Night View Assist Plus
    Never clean the camera lens. When cleaning the field of vision of the driving systems, make sure that you do not spray glass cleaner on the camera lens. If the camera lens is dirty, visit a q ...