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. - ...

Service messages
Information on the type of service and service intervals (see separate Service Booklet). You can obtain further information from an authorized Mercedes-Benz Center or at http://www.mbusa.com (U ...

Resetting the side windows
You must reset each side window if a side window can no longer be closed fully. Close all the doors. Turn the SmartKey to position 1 or 2 in the ignition lock. Pull the corresponding switch ...