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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 ...

Exterior
The coupe version of the S-Class sedan, the CL-Class sits very near the top of the Mercedes-Benz range, and would be a rare thing in anybody's lineup: a large coupe. And when I say large, I mean i ...

Activating/deactivating
Turn the SmartKey to position 2 in the ignition lock. To switch on: press the button. The indicator lamp in the button lights up. Airflow and air distribution are set to automatic mode. or ...