See also:

Changing the battery
You require a CR 2025 3 V cell battery. - Take the mechanical key out of the SmartKey. - Press mechanical key 2 into the opening in the SmartKey in the direction of the arrow until battery t ...

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. Check the battery in ...

Cruise control lever
1. To store the current speed or a higher speed 2. To store the current speed or a lower speed 3. To deactivate DISTRONIC PLUS 4. To store the current speed or to call up the last ...