See also:

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 ...

Preparing the vehicle
Your vehicle may be equipped with: - TIREFIT kit - a "Minispare" emergency spare wheel - MOExtended tires (tires with run-flat properties) Vehicle preparation is not necessary on ...

ATTENTION ASSIST Warns Drowsy Drivers
Drowsiness is one of the most common causes of accidents. This is why Mercedes experts have developed the ATTENTION ASSIST system which forms part of the standard equipment of the new Mercedes CL- ...