See also:

Additional systems for the ultimate in listening pleasure and entertainment
Mercedes customers can, if desired, combine the infotainment facilities for the CLS with other systems: The Logic7 surround sound system developed by Mercedes-Benz together with the audio specia ...

Problems with the SmartKey
Problem Possible causes/consequences and Solutions You cannot lock or unlock the vehicle using the SmartKey. The SmartKey battery is discharged or nearly discharged. ...

General notes
Read this section carefully before driving your vehicle off-road. Practice by driving over more gentle off-road terrain first. Familiarize yourself with the characteristics of your vehicle and ...