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:

    Points to observe before use
    The sockets can be used for accessories, e.g. lamps or mobile phone chargers with a maximum current draw of 180 W (15 A). If you use the sockets for long periods when the engine is switched off, th ...

    Activating/deactivating PRE-SAFEЃ Brake
    PRE-SAFEЃ Brake is only available in vehicles with DISTRONIC PLUS. Ц Press the or button on the steering wheel to select the DriveAssist menu. Ц Press or to select PRE-SAFE Brake. Ц P ...

    Transmission positions
    Park position Do not shift the transmission into position P() unless the vehicle is stationary. The parking lock should not be used as a brake when parking. In addition to engaging the parking ...