See also:

Premiere: LED High Performance headlamps with complete light functionality
The new CLS is the first car in the world to feature optional LED High Performance headlamps, which combine the exciting daylight colour impression of LED technology with the performance, function ...

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. - ...

Rejecting or ending a call
Press the button on the steering wheel. If you are not in the Tel menu, you can still reject or end a call. ...