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:

    Driving on flooded roads
    Do not drive through flooded areas. Check the depth of any water before driving through it. Drive slowly through standing water. Otherwise, water may enter the vehicle interior or the engine co ...

    Downshifting
    Pull the left-hand steering wheel paddle shifter. The automatic transmission shifts down to the next gear. If you brake the vehicle or stop without shifting down, the automatic transmission ...

    Switching on/off
    The three blue indicator lamps in the buttons indicate the ventilation level you have selected. If the battery voltage is too low, the seat ventilation may switch off. ► Make sure that ...